/* ========================================
   STYLES.CSS - Professor Kendeou Academic Website
   Personal Brand: Black, White, Gray & Gold
   ======================================== */

/* ----------------------------------------
   CSS CUSTOM PROPERTIES (Variables)
   ---------------------------------------- */
:root {
    /* Brand Colors: Black, White, Gray & Gold */
    --color-maroon: #1A1A1A;
    --color-maroon-dark: #000000;
    --color-maroon-light: #333333;
    --color-gold: #D4AF37;
    --color-gold-dark: #B8960C;
    --color-gold-light: #E8D48A;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-off-white: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #EEEEEE;
    --color-gray-300: #E0E0E0;
    --color-gray-400: #BDBDBD;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    --color-black: #000000;
    
    /* Typography */
    --font-heading: 'Aref Ruqaa', Georgia, 'Times New Roman', serif;
    --font-body: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    
    /* Spacing */
    --space-1: 0.25rem;      /* 4px */
    --space-2: 0.5rem;       /* 8px */
    --space-3: 0.75rem;      /* 12px */
    --space-4: 1rem;         /* 16px */
    --space-5: 1.25rem;      /* 20px */
    --space-6: 1.5rem;       /* 24px */
    --space-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */
    
    /* Layout */
    --max-width: 1200px;
    --nav-height: 50px;
    --header-height: 140px;
    --border-radius: 4px;
    --border-radius-lg: 8px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Gutter decoration */
    --gutter-glow: rgba(212, 175, 55, 0.045);
}

/* ----------------------------------------
   CSS RESET & BASE STYLES
   ---------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.65;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-maroon);
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: var(--border-radius);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--color-maroon);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover,
a:focus {
    color: var(--color-maroon-dark);
    text-decoration: underline;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

address {
    font-style: normal;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ----------------------------------------
   NAVIGATION / HEADER
   ---------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-black);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base);
}

/* Header Top - Name and Tagline */
.header-top {
    position: relative;
    text-align: center;
    padding: var(--space-6) var(--space-4) var(--space-3);
    background: var(--color-black);
}

.site-name {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 700;
    color: var(--color-white);
    margin: 0;
    letter-spacing: -0.5px;
}

.site-tagline {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-gray-400);
    margin: var(--space-2) 0 0 0;
    letter-spacing: 0.3px;
}

.navbar {
    height: var(--nav-height);
    border-top: 1px solid var(--color-gray-800);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav-menu {
    display: flex;
    gap: var(--space-8);
}

.nav-menu a {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-300);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--space-2) 0;
    position: relative;
    text-decoration: none;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: width var(--transition-base);
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
    color: var(--color-white);
    text-decoration: none;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    left: 0;
    transition: transform var(--transition-base);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* Hamburger Animation */
.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ----------------------------------------
   BANNER SECTION WITH FLOATING ABOUT BOX
   ---------------------------------------- */
.banner-section {
    position: relative;
    padding-top: var(--header-height);
}

.banner-image {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100% - var(--header-height));
    overflow: hidden;
}

.banner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
}

/* Banner Placeholder */
.banner-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-gray-300) 0%, var(--color-gray-400) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-placeholder span {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Floating About Box - overlaps banner and research section */
.about-box {
    position: relative;
    max-width: var(--max-width);
    margin: 480px auto -320px;
    padding: var(--space-10) var(--space-6) var(--space-12);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 40px rgba(0, 0, 0, 0.15);
    border-top: 4px solid var(--color-gold);
    z-index: 10;
}

.about-box-heading {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    color: var(--color-maroon);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--color-gold);
}

.about-box-content p {
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--color-gray-800);
    margin-bottom: var(--space-4);
}

.about-box-content p.lead {
    font-size: var(--text-lg);
    color: var(--color-gray-800);
}

.about-box-content p:last-child {
    margin-bottom: 0;
}

.about-box-content strong {
    color: var(--color-maroon);
}

/* ----------------------------------------
   BUTTONS
   ---------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-maroon);
    color: var(--color-white);
    border-color: var(--color-maroon);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-maroon-dark);
    border-color: var(--color-maroon-dark);
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-maroon);
    border-color: var(--color-maroon);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-maroon);
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-gray-700);
    border-color: var(--color-gray-300);
}

.btn-outline:hover,
.btn-outline:focus {
    background: var(--color-gray-100);
    border-color: var(--color-maroon);
    color: var(--color-maroon);
    text-decoration: none;
}

.btn-outline svg {
    width: 20px;
    height: 20px;
}

/* ----------------------------------------
   SECTIONS (General)
   ---------------------------------------- */
.section {
    padding: var(--space-16) 0;
    position: relative;
    z-index: 1;
}

/* Push research section content below the overlapping about box */
.research-section {
    padding-top: 400px;
}

.media-section {
    background: var(--color-gray-100);
}

/* ----------------------------------------
   SPEAKING SECTION
   ---------------------------------------- */

.speaking-timeline,
#media-timeline {
    margin-bottom: 0;
}

.speaking-section {
    padding-bottom: var(--space-8);
}

.speaking-toggle {
    align-items: flex-start;
    padding: var(--space-5) 0;
}

.speaking-toggle-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    flex: 1;
    min-width: 0;
    padding-right: var(--space-4);
}

.speaking-topic-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.3;
}

.pub-year-toggle[aria-expanded="true"] .speaking-topic-title {
    color: var(--color-gold-dark);
}

.speaking-topic-question {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    font-style: italic;
    line-height: 1.5;
}

.speaking-body {
    padding: var(--space-2) 0 var(--space-6);
}

.speaking-desc {
    font-size: var(--text-lg);
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.speaking-audience {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-5);
}

.speaking-audience-label {
    display: inline-block;
    background: var(--color-maroon);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 2px var(--space-2);
    border-radius: var(--border-radius);
    margin-right: var(--space-2);
}

.speaking-talks {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.speaking-talk-chip {
    display: inline-block;
    background: var(--color-maroon);
    color: var(--color-white);
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius);
    line-height: 1.5;
    border-left: 3px solid var(--color-gold);
}

.services-grid {
    margin-bottom: 0;
}

.service-card {
    display: flex;
    flex-direction: column;
}

.service-bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-5) 0;
    flex: 1;
}

.service-bullets li {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    padding: var(--space-1) 0 var(--space-1) var(--space-5);
    position: relative;
    line-height: 1.6;
}

.service-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--color-gold);
    border-radius: 50%;
}

.service-card .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* ----------------------------------------
   ENQUIRE MODAL
   ---------------------------------------- */
.enquire-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.enquire-modal[hidden] {
    display: none;
}

.enquire-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
}

.enquire-modal-dialog {
    position: relative;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-10) var(--space-10) var(--space-8);
    max-width: 520px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.2);
    border-top: 3px solid var(--color-gold);
}

.enquire-modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-gray-500);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    transition: color var(--transition-base);
}

.enquire-modal-close:hover {
    color: var(--color-gray-900);
}

.enquire-modal-service-tag {
    display: inline-block;
    background: var(--color-gold);
    color: var(--color-black);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 2px var(--space-3);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-3);
}

.enquire-modal-title {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form-label-optional {
    font-weight: 400;
    color: var(--color-gray-400);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    box-sizing: border-box;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.form-actions {
    margin-top: var(--space-6);
}

.enquire-success[hidden] {
    display: none;
}

.enquire-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-8) 0;
    gap: var(--space-4);
}

.enquire-success svg {
    width: 48px;
    height: 48px;
    color: var(--color-gold);
    stroke-width: 2.5;
}

.enquire-success p {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    margin: 0;
}

.grants-section {
    padding-top: var(--space-8);
}

.section:nth-child(even) {
    background: var(--color-gray-100);
}

.section-heading {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
    color: var(--color-maroon);
    margin-bottom: var(--space-6);
    position: relative;
    padding-bottom: var(--space-4);
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--color-gold);
}

.section-intro {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 800px;
    margin-bottom: var(--space-8);
}

.lead {
    font-size: var(--text-lg);
    line-height: 1.8;
}

/* ----------------------------------------
   RESEARCH SECTION
   ---------------------------------------- */
.research-areas {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: 0;
    padding-top: var(--space-6);
    padding-left: var(--space-6);
}

.research-card-wrapper {
    position: relative;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Cards radiate outward from the panel center when it opens */
/* Top-left: up and left */
.research-areas.panel-visible .research-card-wrapper:nth-child(1) {
    transform: translateY(-14px) translateX(-10px) rotate(-2deg);
}
/* Top-center: straight up */
.research-areas.panel-visible .research-card-wrapper:nth-child(2) {
    transform: translateY(-18px);
}
/* Top-right: up and right */
.research-areas.panel-visible .research-card-wrapper:nth-child(3) {
    transform: translateY(-14px) translateX(10px) rotate(2deg);
}
/* Bottom-left: down and left */
.research-areas.panel-visible .research-card-wrapper:nth-child(5) {
    transform: translateY(14px) translateX(-10px) rotate(2deg);
}
/* Bottom-center: straight down */
.research-areas.panel-visible .research-card-wrapper:nth-child(6) {
    transform: translateY(18px);
}
/* Bottom-right: down and right */
.research-areas.panel-visible .research-card-wrapper:nth-child(7) {
    transform: translateY(14px) translateX(10px) rotate(-2deg);
}

.research-icon {
    position: absolute;
    top: -18px;
    left: -18px;
    width: 48px;
    height: 48px;
    background: var(--color-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
    z-index: 2;
}

.research-icon svg {
    width: 22px;
    height: 22px;
    color: var(--color-black);
    flex-shrink: 0;
}

.research-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

.research-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
    border-color: rgba(212, 175, 55, 0.5);
}

/* Gold sheen sweep on hover */
.research-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent 0%,
        rgba(212, 175, 55, 0.08) 50%,
        transparent 100%
    );
    transition: left 0.45s ease;
    pointer-events: none;
    z-index: 1;
}

.research-card:hover::before {
    left: 100%;
}

.research-card h3 {
    font-size: var(--text-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.research-card p {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 0;
    text-align: justify;
}

.research-card p em {
    color: var(--color-gold);
    font-style: italic;
}

/* ----------------------------------------
   SEMINAR PAPER PANEL
   ---------------------------------------- */
.seminar-panel {
    grid-column: 1 / -1;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
    padding-left: var(--space-8);
    padding-right: var(--space-8);
    background: var(--color-maroon);
    border-top: 0px solid var(--color-gold);
    color: var(--color-white);
    border-radius: var(--border-radius-lg);
    transition:
        max-height 0.4s ease,
        opacity 0.3s ease,
        margin-top 0.3s ease,
        padding-top 0.3s ease,
        padding-bottom 0.3s ease,
        border-top-width 0s 0.4s;
}

.seminar-panel.visible {
    max-height: 500px;
    opacity: 1;
    margin-top: var(--space-5);
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
    border-top-width: 3px;
    transition:
        max-height 0.4s ease,
        opacity 0.3s ease,
        margin-top 0.3s ease,
        padding-top 0.3s ease,
        padding-bottom 0.3s ease,
        border-top-width 0s;
}

.seminar-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-gold);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.seminar-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-white);
    line-height: 1.3;
    margin-bottom: var(--space-3);
}

.seminar-title a {
    color: var(--color-gold);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.seminar-title a:hover {
    color: #fff;
}

.seminar-desc {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.75;
    margin-bottom: var(--space-6);
}

.seminar-audio {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.seminar-play-btn {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-gold);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-black);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.seminar-play-btn:hover:not([disabled]) {
    background: var(--color-gold-dark);
    transform: scale(1.08);
}

.seminar-play-btn:focus-visible {
    outline: 2px solid var(--color-white);
    outline-offset: 3px;
}

.seminar-play-btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
}

.seminar-play-btn svg {
    width: 16px;
    height: 16px;
    margin-left: 2px;
}

.seminar-scrubber-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-top: 12px; /* vertically align bar with center of 44px play button */
}

.seminar-scrubber {
    position: relative;
    height: 20px;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.seminar-scrubber[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.4;
    pointer-events: none;
}

.seminar-scrubber-track {
    position: absolute;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 2px;
    overflow: hidden;
}

.seminar-scrubber-fill {
    height: 100%;
    width: 0%;
    background: var(--color-gold);
    border-radius: 2px;
    transition: width 0.1s linear;
}

.seminar-scrubber-thumb {
    position: absolute;
    left: 0%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gold);
    box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.3);
    transition: left 0.1s linear, transform var(--transition-fast), box-shadow var(--transition-fast);
    pointer-events: none;
}

.seminar-scrubber:hover .seminar-scrubber-thumb,
.seminar-scrubber.dragging .seminar-scrubber-thumb {
    transform: translateX(-50%) scale(1.3);
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.25);
}

.seminar-scrubber-times {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.45);
}

#seminar-audio-note {
    color: rgba(255, 255, 255, 0.35);
    font-style: italic;
}

/* ----------------------------------------
   GRANTS SECTION
   ---------------------------------------- */
.grants-subheading {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-gray-700);
    font-weight: 600;
    margin-bottom: var(--space-6);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.grants-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.grant-item {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-gold);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.grant-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.grant-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.grant-tags {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.grant-role {
    display: inline-block;
    background: var(--color-maroon);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
}

.grant-period {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    font-weight: 600;
}

.grant-title {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
}

.grant-funder {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-2);
}

.grant-amount {
    display: inline-block;
    background: var(--color-gold);
    color: var(--color-black);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
}

.grants-additional {
    margin-top: var(--space-8);
}

.grant-compact-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.grant-compact-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.grant-compact-agency {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--color-maroon);
    color: var(--color-white);
    padding: 2px var(--space-2);
    border-radius: var(--border-radius);
    flex-shrink: 0;
}

.grant-compact-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-gray-900);
}

.grant-compact-meta {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    padding-left: calc(var(--space-2) + 2ch + var(--space-3));
}

.grant-description {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ----------------------------------------
   PUBLICATIONS TIMELINE
   ---------------------------------------- */
.pub-timeline {
    position: relative;
    padding-left: 44px;
    margin-bottom: var(--space-6);
}

#pub-timeline {
    max-height: 600px;
    overflow-y: auto;
    padding-right: var(--space-4);
    scrollbar-width: thin;
    scrollbar-color: var(--color-gold) var(--color-gray-200);
}

#pub-timeline::-webkit-scrollbar {
    width: 6px;
}

#pub-timeline::-webkit-scrollbar-track {
    background: var(--color-gray-200);
    border-radius: 3px;
}

#pub-timeline::-webkit-scrollbar-thumb {
    background: var(--color-gold);
    border-radius: 3px;
}

/* Vertical line running through full timeline */
.pub-timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 16px;
    bottom: 16px;
    width: 2px;
    background: linear-gradient(
        to bottom,
        var(--color-gold) 0%,
        rgba(212, 175, 55, 0.2) 100%
    );
}

.pub-year-group {
    position: relative;
    margin-bottom: var(--space-2);
}

.pub-year-group:last-child {
    margin-bottom: 0;
}

/* Year toggle button */
.pub-year-toggle {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-4) var(--space-2);
    gap: var(--space-4);
    text-align: left;
    color: inherit;
}

.pub-year-toggle:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

/* Node dot on the timeline */
.pub-year-toggle::before {
    content: '';
    position: absolute;
    left: -42px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-white);
    border: 2.5px solid var(--color-gold);
    box-shadow: 0 0 0 3px var(--color-white);
    transition: background var(--transition-fast), transform var(--transition-fast);
    z-index: 1;
}

.pub-year-toggle[aria-expanded="true"]::before {
    background: var(--color-gold);
}

.pub-year-toggle:hover::before {
    transform: translateY(-50%) scale(1.15);
}

.pub-year-label {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-maroon);
    line-height: 1;
    min-width: 64px;
}

.pub-year-toggle[aria-expanded="true"] .pub-year-label {
    color: var(--color-gold-dark);
}

.pub-year-count {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    font-weight: 400;
}

.pub-toggle-chevron {
    width: 18px;
    height: 18px;
    margin-left: auto;
    flex-shrink: 0;
    color: var(--color-gray-400);
    transition: transform var(--transition-base);
}

.pub-year-toggle[aria-expanded="true"] .pub-toggle-chevron {
    transform: rotate(180deg);
    color: var(--color-gold-dark);
}

/* Collapsible papers container */
.pub-year-papers {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
    padding-left: var(--space-2);
}

.pub-year-papers.expanded {
    max-height: 1200px;
    transition: max-height 0.5s ease;
}

/* Individual paper entries */
.publication-item {
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.publication-item:last-child {
    border-bottom: none;
    padding-bottom: var(--space-6);
}

.pub-authors {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    margin-bottom: var(--space-1);
}

.pub-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    line-height: 1.5;
}

.pub-title a {
    color: inherit;
    text-decoration: none;
}

.pub-title a:hover {
    color: var(--color-gold);
}

.pub-journal {
    font-size: var(--text-base);
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.pub-note {
    display: inline-block;
    background: var(--color-gray-200);
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    margin-left: var(--space-2);
    font-style: normal;
}

.publications-cta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.publications-cta p {
    margin-bottom: 0;
    color: var(--color-gray-600);
    font-weight: 500;
}

/* ----------------------------------------
   CONTACT SECTION
   ---------------------------------------- */
.contact-layout {
    display: flex;
    gap: var(--space-16);
    align-items: flex-start;
}

.contact-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
    flex: 0 0 auto;
}

.contact-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: var(--space-4);
}

.contact-block address {
    font-style: normal;
    font-size: var(--text-base);
    line-height: 1.9;
    color: var(--color-gray-700);
}

.contact-email {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-gray-900);
    text-decoration: none;
    border-bottom: 2px solid var(--color-gold);
    padding-bottom: 1px;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.contact-email:hover {
    color: var(--color-gold);
    border-color: transparent;
    text-decoration: none;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.contact-link-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border: 1.5px solid var(--color-gray-200);
    border-radius: 999px;
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-gray-800);
    text-decoration: none;
    background: var(--color-white);
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-link-btn:hover {
    border-color: var(--color-gold);
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-decoration: none;
}

.contact-link-btn svg {
    flex-shrink: 0;
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.contact-link-btn:hover svg {
    color: var(--color-gold);
}

/* ----------------------------------------
   THEME TOGGLE
   ---------------------------------------- */
.theme-toggle {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 1001;
    background: none;
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 50%;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-gray-500);
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
    background: rgba(212, 175, 55, 0.08);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 3px;
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ----------------------------------------
   FOOTER
   ---------------------------------------- */
.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-8) 0;
}

.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-text {
    margin-bottom: 0;
    font-size: var(--text-sm);
}

.footer-accessibility a {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
}

.footer-accessibility a:hover {
    color: var(--color-white);
}

/* ----------------------------------------
   SCROLL REVEAL ANIMATIONS
   ---------------------------------------- */
.reveal-fade,
.reveal-slide {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-slide {
    transform: translateY(40px);
}

.reveal-fade.revealed,
.reveal-slide.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for cards */
.research-card:nth-child(1) { transition-delay: 0s; }
.research-card:nth-child(2) { transition-delay: 0.1s; }
.research-card:nth-child(3) { transition-delay: 0.2s; }
.research-card:nth-child(4) { transition-delay: 0.3s; }
.research-card:nth-child(5) { transition-delay: 0.4s; }
.research-card:nth-child(6) { transition-delay: 0.5s; }

.grant-item:nth-child(1) { transition-delay: 0s; }
.grant-item:nth-child(2) { transition-delay: 0.1s; }
.grant-item:nth-child(3) { transition-delay: 0.2s; }
.grant-item:nth-child(4) { transition-delay: 0.3s; }
.grant-item:nth-child(5) { transition-delay: 0.4s; }

/* ----------------------------------------
   ANIMATED HEADING UNDERLINE
   ---------------------------------------- */
/* Animated underline for section headings */
.section-heading::after {
    transition: width var(--transition-slow) ease-out;
    width: 0;
}

.section-heading.revealed::after {
    width: 60px;
}


/* ----------------------------------------
   HEADER SCROLL BEHAVIOR
   ---------------------------------------- */
.site-header {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(0, 0, 0, 0.85);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.site-header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.site-header.hidden {
    transform: translateY(-100%);
}

.site-header {
    transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

/* Grant items glassmorphism */
.grant-item {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(212, 175, 55, 0.15);
    transition: all var(--transition-base);
}

.grant-item:hover {
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

/* ----------------------------------------
   CARD ACCENT BORDERS
   ---------------------------------------- */
.research-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-gold);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.grant-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-gold);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

/* ----------------------------------------
   ENHANCED BUTTON STYLES
   ---------------------------------------- */
.btn-primary {
    background: linear-gradient(135deg, var(--color-maroon) 0%, var(--color-maroon-dark) 100%);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::before {
    left: 0;
}

.btn-primary:hover {
    color: var(--color-black);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
}

.btn-secondary {
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--color-gold);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: -1;
}

.btn-secondary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-secondary:hover {
    color: var(--color-black);
    border-color: var(--color-gold);
}


/* ----------------------------------------
   ENHANCED REVEAL ANIMATIONS
   ---------------------------------------- */
.reveal-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-fade.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-slide-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-slide-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-slide-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-slide-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* ----------------------------------------
   RESPONSIVE DESIGN
   ---------------------------------------- */

/* Widescreen (min-width: 1400px) */
@media (min-width: 1400px) {
    :root { --max-width: 1360px; }
    .about-box { margin: 520px auto -340px; }
    .research-section { padding-top: 420px; }
}

/* Large laptop (max-width: 1200px) */
@media (max-width: 1200px) {
    .about-box { margin: 400px auto -260px; }
    .research-section { padding-top: 320px; }
}

/* Small laptop / Tablet landscape (max-width: 1024px) */
@media (max-width: 1024px) {
    :root {
        --nav-height: 50px;
        --header-height: 120px;
    }
    .header-top { padding: var(--space-4) var(--space-4) var(--space-2); }
    .site-name { font-size: var(--text-3xl); }
    .about-box {
        margin: 300px var(--space-6) -200px;
        padding: var(--space-8) var(--space-6);
    }
    .research-section { padding-top: 260px; }
}

/* Tablet portrait (max-width: 900px) — hamburger menu + 2-col grid */
@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .nav-container { justify-content: flex-end; }
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        z-index: 999;
        background: var(--color-white);
        flex-direction: column;
        gap: 0;
        padding: var(--space-4) 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    }
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-menu a {
        display: block;
        padding: var(--space-4) var(--space-6);
        border-bottom: 1px solid var(--color-gray-200);
        color: var(--color-gray-800);
    }
    .nav-menu a::after { display: none; }
    .nav-menu li:last-child a { border-bottom: none; }
    .about-box { margin: 220px var(--space-5) -150px; }
    .research-section { padding-top: 210px; }
    .research-areas { grid-template-columns: 1fr; }
    .research-areas.panel-visible .research-card-wrapper { transform: none; }
}

/* Mobile (max-width: 640px) — stacked banner */
@media (max-width: 640px) {
    :root {
        --header-height: 110px;
        --space-24: 4rem;
        --space-16: 3rem;
        --space-12: 2rem;
    }
    .header-top { padding: var(--space-3) var(--space-4) var(--space-2); }
    .site-name { font-size: var(--text-2xl); }
    .site-tagline { font-size: var(--text-sm); }

    /* Stacked banner: image has fixed proportional height, about-box below */
    .banner-section {
        display: flex;
        flex-direction: column;
    }
    .banner-image {
        position: relative;
        top: 0;
        height: 50vw;
        min-height: 200px;
        max-height: 280px;
    }
    .about-box {
        margin: -40px var(--space-4) 0;
        padding: var(--space-6) var(--space-4);
    }
    .about-box-heading { font-size: var(--text-2xl); }

    /* Research section: normal flow, no overlap offset needed */
    .research-section { padding-top: var(--space-16); }

    /* Audio player: wrap scrubber below play button on narrow screens */
    .seminar-audio { flex-wrap: wrap; }
    .seminar-scrubber-wrap { flex-basis: 100%; padding-top: 0; }

    .grant-item { padding: var(--space-6); }
    .contact-layout { flex-direction: column; gap: var(--space-8); }
    .site-footer .container { flex-direction: column; text-align: center; }
}

/* Small mobile (max-width: 480px) */
@media (max-width: 480px) {
    .container { padding: 0 var(--space-4); }
    h1 { font-size: var(--text-3xl); }
    .section-heading { font-size: var(--text-2xl); }
    .about-box { margin: -30px var(--space-3) 0; }
    .grant-header { flex-direction: column; align-items: flex-start; }
    .pub-timeline { padding-left: 36px; }
    .pub-year-label { font-size: var(--text-xl); }
    .pub-year-toggle::before { left: -34px; width: 16px; height: 16px; }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .reveal-fade,
    .reveal-slide,
    .reveal-slide-left,
    .reveal-slide-right {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .research-card,
    .grant-item,
    .btn,
    .pub-year-papers,
    .seminar-panel {
        transition: none;
    }
    
    .seminar-panel.visible {
        max-height: 500px;
        opacity: 1;
    }
    
    .research-card:hover,
    .grant-item:hover,
    .btn:hover {
        transform: none;
    }
    
    /* Disable animated decorative elements — none active */
    
    .section-heading::after {
        width: 60px;
        transition: none;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .nav-toggle,
    .skip-link {
        display: none;
    }
    
    .section {
        padding: var(--space-8) 0;
        page-break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        color: black;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}

/* ========================================
   DARK MODE
   ======================================== */

/* --- Variable overrides --- */
[data-theme="dark"] {
    --color-white:     #111417;
    --color-off-white: #161B1F;
    --color-gray-100:  #1C2226;
    --color-gray-200:  #252D33;
    --color-gray-300:  #333C44;
    --color-gray-400:  #4A555F;
    --color-gray-500:  #68767F;
    --color-gray-600:  #8C9AA6;
    --color-gray-700:  #B0BEC8;
    --color-gray-800:  #CEDAE4;
    --color-gray-900:  #ECF2F8;
    /* maroon flips: was near-black text, now near-white */
    --color-maroon:       #D8E4EE;
    --color-maroon-dark:  #EDF3F9;
    --color-maroon-light: #B4C4D2;
    /* stronger shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.5);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.6);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.7);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.8);
}

/* --- Base --- */
[data-theme="dark"] body { color: var(--color-gray-700); }

[data-theme="dark"] a { color: var(--color-gold-light); }
[data-theme="dark"] a:hover { color: var(--color-gold); }

/* --- Header: bg stays black (hardcoded rgba), pin all text/chrome to light-mode values --- */
[data-theme="dark"] .site-name {
    color: var(--color-gold);
}
[data-theme="dark"] .site-tagline {
    color: var(--color-gold-light);
}
/* Nav links: pin to light-mode colors (gray-300 / white on black bg) */
[data-theme="dark"] .nav-menu a {
    color: #E0E0E0;
}
[data-theme="dark"] .nav-menu a:hover,
[data-theme="dark"] .nav-menu a:focus-visible {
    color: #FFFFFF;
}
/* Hamburger icon lines */
[data-theme="dark"] .hamburger,
[data-theme="dark"] .hamburger::before,
[data-theme="dark"] .hamburger::after {
    background: #FFFFFF;
}
/* Navbar divider: soften from near-white to a muted gray */
[data-theme="dark"] .navbar {
    border-top-color: #3A3A3A;
}

/* --- About box --- */
[data-theme="dark"] .about-box-content strong { color: var(--color-gold); }

/* --- Seminar panel: --color-maroon flipped to light, keep panel dark --- */
[data-theme="dark"] .seminar-panel {
    background: #0D1117;
    border-color: var(--color-gold);
}

/* --- Grant items: hardcoded rgba(255,255,255) — override --- */
[data-theme="dark"] .grant-item {
    background: rgba(26, 32, 38, 0.95);
    border-color: rgba(212, 175, 55, 0.15);
}
[data-theme="dark"] .grant-item:hover {
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow: 0 12px 30px rgba(0,0,0,0.5);
}

/* --- Chips / tags: --color-maroon was dark bg; now it's light → override --- */
[data-theme="dark"] .speaking-audience-label,
[data-theme="dark"] .speaking-talk-chip {
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-gold-light);
}
[data-theme="dark"] .grant-role,
[data-theme="dark"] .grant-compact-agency {
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-gold-light);
}

/* --- Buttons --- */
[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
    color: var(--color-black);
}
[data-theme="dark"] .btn-primary::before {
    background: linear-gradient(135deg, #F0D060 0%, var(--color-gold-light) 100%);
}
[data-theme="dark"] .btn-primary:hover { color: var(--color-black); }

[data-theme="dark"] .btn-secondary {
    color: var(--color-gray-700);
    border-color: var(--color-gray-500);
}
[data-theme="dark"] .btn-secondary:hover {
    background: var(--color-gold);
    color: var(--color-black);
    border-color: var(--color-gold);
}

[data-theme="dark"] .btn-outline {
    border-color: var(--color-gray-400);
}
[data-theme="dark"] .btn-outline:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gold);
    color: var(--color-gold);
}

/* --- Footer: --color-gray-900 would flip to near-white — keep dark --- */
[data-theme="dark"] .site-footer {
    background: #090C0F;
    color: var(--color-gray-500);
}

/* --- Contact link button border --- */
[data-theme="dark"] .contact-link-btn {
    border-color: var(--color-gray-300);
}

/* --- Form inputs --- */
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background: var(--color-gray-100);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900);
}

/* --- Research card hover shadow --- */
[data-theme="dark"] .research-card:hover {
    box-shadow: 0 12px 28px rgba(0,0,0,0.5);
}