/* ================================================================
   DESIGN TOKENS — Single source of truth for brand values.
   If changing a value here, also update tailwind.config in HTML.
   ================================================================ */
:root {
    --brand-saffron: #FF9933;
    --brand-maroon: #700000;
    --brand-maroon-dark: #5a0000;
    --brand-gold: #D4AF37;
    --brand-stone: #F9FAFB;
    --brand-dark: #1F2937;
    --brand-maroon-shadow: rgba(112, 0, 0, 0.2);
    --radius-pill: 9999px;
    --transition-default: 0.3s ease;
    --transition-premium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--brand-stone);
    color: var(--brand-dark);
    line-height: 1.6;
}

/* Headings: font only. Default maroon applied only when no Tailwind text-* class. */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Merriweather', serif;
}

h1:not([class*="text-"]),
h2:not([class*="text-"]),
h3:not([class*="text-"]),
h4:not([class*="text-"]),
h5:not([class*="text-"]),
h6:not([class*="text-"]) {
    color: var(--brand-maroon);
}

/* Bilingual span color inheritance */
[data-lang-en], [data-lang-kn] {
    color: inherit;
}

/* Kannada font — single declaration for all Kannada contexts */
.font-kannada, [data-lang-kn] {
    font-family: 'Noto Sans Kannada', 'Inter', sans-serif;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

/* Language visibility — default English */
body:not(.lang-kn) [data-lang-kn] {
    display: none !important;
}

body.lang-kn [data-lang-en] {
    display: none !important;
}

/* ================================================================
   COMPONENT STYLES
   ================================================================ */

/* Temple Motif Background */
.temple-pattern {
    background-color: #FFF7ED;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239A3412' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* Card Hover — Premium Lift */
.hover-card {
    transition: all var(--transition-premium);
}

.hover-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Entrance Animation */
@keyframes fadeInUp {
    from { opacity: 0; transform: translate3d(0, 40px, 0); }
    to   { opacity: 1; transform: translate3d(0, 0, 0); }
}

.animate-fade-in-up { animation: fadeInUp 0.8s ease-out forwards; }
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

/* Buttons */
.btn-primary {
    background-color: var(--brand-maroon);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    transition: all var(--transition-default);
    box-shadow: 0 4px 6px -1px var(--brand-maroon-shadow);
}

.btn-primary:hover {
    background-color: var(--brand-maroon-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px var(--brand-maroon-shadow);
}

.btn-outline {
    border: 2px solid var(--brand-maroon);
    color: var(--brand-maroon);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    transition: all var(--transition-default);
}

.btn-outline:hover {
    background-color: var(--brand-maroon);
    color: white;
}

.btn-primary:focus-visible,
.btn-outline:focus-visible {
    outline: 2px solid var(--brand-gold);
    outline-offset: 2px;
}

.btn-primary:disabled,
.btn-outline:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Language Switcher */
.lang-btn {
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all var(--transition-default);
    border: 1px solid var(--brand-maroon);
}

.lang-btn.active {
    background-color: var(--brand-maroon);
    color: white;
}

.lang-btn:not(.active) {
    color: var(--brand-maroon);
    background: transparent;
}

/* Record Card */
.record-card {
    background: linear-gradient(135deg, #FFF7ED 0%, #FFFBEB 100%);
    border: 1px solid #FDE68A;
    border-radius: 1rem;
    overflow: hidden;
    transition: all var(--transition-premium);
}

.record-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -10px rgba(212, 175, 55, 0.3);
    border-color: var(--brand-gold);
}

/* Timeline */
.timeline-item {
    position: relative;
    padding-left: 2rem;
    border-left: 3px solid var(--brand-gold);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background: var(--brand-maroon);
    border: 3px solid var(--brand-gold);
}

/* Campus Image Hover */
.campus-hero {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
}

.campus-hero img {
    transition: transform 0.7s ease;
}

.campus-hero:hover img {
    transform: scale(1.05);
}

/* Donation Sticky Bar */
.donate-sticky {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 40;
    transform: translateY(100%);
    transition: transform var(--transition-default);
}

.donate-sticky.visible {
    transform: translateY(0);
}

/* Gallery Filter */
.gallery-filter-btn {
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-default);
    border: 2px solid transparent;
}

.gallery-filter-btn.active {
    background-color: var(--brand-maroon);
    color: white;
    border-color: var(--brand-maroon);
}

.gallery-filter-btn:not(.active) {
    background-color: #F3F4F6;
    color: #4B5563;
    border-color: #E5E7EB;
}

.gallery-filter-btn:not(.active):hover {
    border-color: var(--brand-maroon);
    color: var(--brand-maroon);
}

/* Fade In on Scroll */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================================
   ACCESSIBILITY
   ================================================================ */

:focus-visible {
    outline: 2px solid var(--brand-maroon);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

.skip-to-content {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 100;
}

.skip-to-content:focus {
    position: fixed;
    top: 1rem;
    left: 1rem;
    width: auto;
    height: auto;
    padding: 0.75rem 1.5rem;
    background: var(--brand-maroon);
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 0.5rem;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hover-card:hover { transform: none; }
    .fade-in-section { opacity: 1; transform: none; }
}