/* ============================================
   SADAS Website - Design System
   Sherpur Diabetic Somity
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Brand Colors (from logo) */
    --color-primary: #1E3A8A;
    /* Royal Blue - trust, professionalism */
    --color-primary-dark: #1E40AF;
    --color-primary-light: #3B82F6;

    --color-accent: #10B981;
    /* Green - growth, health */
    --color-accent-dark: #059669;
    --color-accent-light: #34D399;

    --color-alert: #EF4444;
    /* Red - urgent notices */
    --color-warning: #FCD34D;
    /* Yellow - caution */

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;

    /* Typography */
    --font-primary: 'Anek Bangla', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Anek Bangla', 'Merriweather', Georgia, serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 1.875rem;
    /* 30px */
    --font-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing (8px base) */
    --space-1: 0.5rem;
    /* 8px */
    --space-2: 1rem;
    /* 16px */
    --space-3: 1.5rem;
    /* 24px */
    --space-4: 2rem;
    /* 32px */
    --space-5: 2.5rem;
    /* 40px */
    --space-6: 3rem;
    /* 48px */
    --space-8: 4rem;
    /* 64px */
    --space-10: 5rem;
    /* 80px */
    --space-12: 6rem;
    /* 96px */

    /* Border Radius */
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Layout */
    --container-max-width: 1280px;
    --header-height: 90px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-primary);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
    margin-bottom: var(--space-2);
}

h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-3);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--space-2);
    line-height: var(--line-height-relaxed);
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--color-primary);
}

.text-accent {
    color: var(--color-accent);
}

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-2);
}

.section {
    padding: var(--space-8) 0;
}

.section-alt {
    background-color: var(--color-gray-50);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: var(--space-3);
    left: 50%;
    transform: translateX(-50%);
    width: 95%;
    max-width: var(--container-max-width);
    height: 90px;
    background-color: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    border-color: rgba(30, 58, 138, 0.1);
    box-shadow: var(--shadow-xl);
}

.header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    transition: color var(--transition-base);
}

.header.scrolled .logo {
    color: var(--color-primary);
}

.logo img {
    height: 75px;
    width: auto;
}

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

.nav-link {
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.header.scrolled .nav-link {
    color: var(--color-gray-700);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.1);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
    background-color: var(--color-gray-50);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: flex;
    /* Align with nav items */
    align-items: center;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 220px;
    background-color: var(--color-white);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: var(--space-2) 0;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all var(--transition-base);
    pointer-events: none;
}

/* Invisible bridge to prevent closing on gap */
.dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 20px;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
    pointer-events: auto;
}

.dropdown-item {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--color-gray-700);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.dropdown-item:hover,
.dropdown-item.active {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
    padding-left: var(--space-4);
    /* Subtle animation */
}

/* Mobile Dropdown Fix */
@media (max-width: 768px) {
    .dropdown {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    /* Remove bridge on mobile */
    .dropdown::after {
        display: none;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        background-color: transparent;
        padding-left: var(--space-3);
        margin-top: 0;
        opacity: 1;
        visibility: visible;
        display: none;
        /* Toggle with display instead on mobile */
        transform: none;
        pointer-events: auto;
    }

    .dropdown:hover .dropdown-menu {
        display: block;
    }
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-1);
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        padding: var(--space-3);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

/* ============================================
   SLIDER SECTION
   ============================================ */
.slider-container {
    position: relative;
    width: 100%;
    height: 700px;
    overflow: hidden;
}

.slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
    z-index: 0;
}

.slide-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 var(--space-2);
    transform: translateY(30px);
    transition: transform 0.8s ease-out;
}

.slide.active .slide-content {
    transform: translateY(0);
}

.slide-content h1 {
    color: var(--color-white);
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-3);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.slide-content p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-5);
    opacity: 0.95;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.slide-btns {
    display: flex;
    gap: var(--space-2);
    justify-content: center;
    flex-wrap: wrap;
}

/* Slider Controls */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    z-index: 10;
    transition: all var(--transition-base);
    backdrop-filter: blur(5px);
}

.slider-btn:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

.slider-btn.prev {
    left: 20px;
}

.slider-btn.next {
    right: 20px;
}

/* Dots */
.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-base);
}

.dot.active {
    background: var(--color-white);
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .slider-container {
        height: 450px;
    }

    .slide-content h1 {
        font-size: var(--font-size-3xl);
    }

    .slide-content p {
        font-size: var(--font-size-lg);
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

/* Maintain .hero class for other pages if needed */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: calc(var(--header-height) + var(--space-8)) 0 var(--space-10);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Common Page Header (Interior Pages) */
.page-header {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-dark) 100%);
    color: var(--color-white);
    padding: calc(var(--header-height) + var(--space-6)) 0 var(--space-6);
    text-align: center;
    position: relative;
}

.page-header h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-1);
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-lg);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-sm {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-accent:hover {
    background-color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

.btn-white:hover {
    background-color: var(--color-gray-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    margin-bottom: var(--space-3);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.card-body {
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

.card-footer {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-gray-200);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ============================================
   NOTICE BOARD
   ============================================ */
.notice {
    background-color: var(--color-white);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.notice:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.notice.urgent {
    border-left-color: var(--color-alert);
    background-color: #FEF2F2;
}

.notice.warning {
    border-left-color: var(--color-warning);
    background-color: #FFFBEB;
}

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

.notice-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.notice-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.notice-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.notice-badge.urgent {
    background-color: var(--color-alert);
    color: var(--color-white);
}

.notice-badge.general {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--space-3);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--space-1);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-2);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--color-alert);
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-gray-50);
    color: var(--color-gray-700);
    padding: var(--space-5) 0 var(--space-3);
    border-top: 1px solid var(--color-gray-200);
}

.footer-section {
    text-align: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-2);
}

.footer-section h3 {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
    font-weight: var(--font-weight-bold);
    text-align: center;
}

.footer-section p,
.footer-section a {
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

.footer-section a:hover {
    color: var(--color-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    align-items: center;
}

.footer-bottom {
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.footer-bottom a {
    color: inherit;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.social-links {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-2);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-gray-800);
    border-radius: 0;
    color: var(--color-white) !important;
}

.social-link.facebook {
    background-color: #1877F2;
}

.social-link.twitter {
    background-color: #000000;
}

.social-link.youtube {
    background-color: #FF0000;
}

.social-link:hover {
    opacity: 0.9;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.mt-1 {
    margin-top: var(--space-1);
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-3 {
    margin-top: var(--space-3);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-5 {
    margin-top: var(--space-5);
}

.mb-1 {
    margin-bottom: var(--space-1);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-3 {
    margin-bottom: var(--space-3);
}

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

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

.pt-1 {
    padding-top: var(--space-1);
}

.pt-2 {
    padding-top: var(--space-2);
}

.pt-3 {
    padding-top: var(--space-3);
}

.pt-4 {
    padding-top: var(--space-4);
}

.pb-1 {
    padding-bottom: var(--space-1);
}

.pb-2 {
    padding-bottom: var(--space-2);
}

.pb-3 {
    padding-bottom: var(--space-3);
}

.pb-4 {
    padding-bottom: var(--space-4);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 992px) {
    .header {
        height: 70px;
    }

    :root {
        --header-height: 70px;
    }

    .logo img {
        height: 55px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--space-10) var(--space-4);
        transition: right 0.4s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        z-index: 1001;
        overflow-y: auto;
    }

    .nav.active {
        right: 0;
    }

    .nav-link {
        color: var(--color-gray-800) !important;
        font-size: var(--font-size-lg);
        width: 100%;
        padding: var(--space-2) 0;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .dropdown {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: block;
        padding-left: var(--space-4);
        box-shadow: none;
        border-left: 2px solid var(--color-primary-light);
        margin-top: 5px;
        margin-bottom: var(--space-2);
        pointer-events: auto;
    }

    .dropdown-item {
        padding: var(--space-1) 0;
    }

    .header {
        top: 0;
        width: 100%;
        border-radius: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }

    .section {
        padding: var(--space-6) 0;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: var(--font-size-3xl);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-6);
    }

    .footer-section {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }

    .page-header {
        padding: calc(var(--header-height) + var(--space-4)) 0 var(--space-4);
    }

    .logo-slide {
        height: 100px;
        margin: 0 var(--space-4);
    }

    .logo-slide img {
        height: 100%;
    }

    .about-story-container {
        max-width: 100% !important;
    }

    /* Fixed images on mobile */
    .grid-2 img,
    .grid-3 img {
        height: auto !important;
        aspect-ratio: 16/9;
    }

    .notice-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .notice-date {
        font-size: var(--font-size-xs);
        opacity: 0.8;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.875rem;
        --font-size-4xl: 1.5rem;
        --header-height: 60px;
    }

    .container {
        padding: 0 var(--space-1);
    }

    .btn {
        width: 100%;
        padding: var(--space-2) var(--space-3);
        font-size: var(--font-size-sm);
    }

    .slide-btns {
        flex-direction: column;
        width: 100%;
    }

    .logo span {
        font-size: 0.9rem;
    }

    .logo img {
        height: 45px;
    }

    .header {
        height: 60px;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   TABLES & BADGES
   ============================================ */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin-bottom: var(--space-4);
    border: 1px solid var(--color-gray-200);
}

.members-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 600px;
}

.members-table th,
.members-table td {
    padding: var(--space-2);
    border-bottom: 1px solid var(--color-gray-200);
}

.members-table th {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.members-table tr:hover {
    background-color: var(--color-gray-50);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.badge-primary {
    background-color: var(--color-primary-light);
    color: var(--color-white);
}

.badge-gray {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

.mt-12 {
    margin-top: var(--space-12);
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    width: 45px;
    height: 45px;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    border: none;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-accent);
    transform: translateY(-5px);
}

/* Logo Slider (Affiliations) */
.logo-slider {
    overflow: hidden;
    padding: var(--space-8) 0;
    background: var(--color-white);
    white-space: nowrap;
    position: relative;
}

.logo-slider::before,
.logo-slider::after {
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    content: "";
    z-index: 2;
}

.logo-slider::before {
    left: 0;
    background: linear-gradient(to right, var(--color-white), rgba(255, 255, 255, 0));
}

.logo-slider::after {
    right: 0;
    background: linear-gradient(to left, var(--color-white), rgba(255, 255, 255, 0));
}

.logo-track {
    display: inline-block;
    animation: scroll 30s linear infinite;
}

.logo-track:hover {
    animation-play-state: paused;
}

.logo-slide {
    display: inline-block;
    height: 200px;
    margin: 0 var(--space-8);
    vertical-align: middle;
}

.logo-slide img {
    height: 100%;
    width: auto;
    transition: all var(--transition-base);
}

.logo-slide:hover img {
    transform: scale(1.05);
}

@keyframes scroll {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

/* Blog Section */
.blog-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.blog-image {
    position: relative;
    height: 200px;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.blog-card:hover .blog-image img {
    transform: scale(1.1);
}

.blog-category {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    z-index: 1;
}

.blog-meta {
    margin-bottom: var(--space-1);
}

.blog-date {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.blog-card .card-body {
    padding: var(--space-3);
    flex-grow: 1;
}

.blog-card .card-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.blog-card .card-footer {
    padding: var(--space-2) var(--space-3);
    border-top: 1px solid var(--color-gray-100);
}

.read-more {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.pagination .btn {
    margin: 0 5px;
}

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

/* Gallery Section */
.gallery-filter .btn {
    margin: 5px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-4);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 250px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: var(--space-3) var(--space-2);
    opacity: 0;
    transform: translateY(100%);
    transition: all var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
    transform: translateY(0);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 900px;
    border-radius: var(--radius-lg);
}

#lightbox-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
    font-size: var(--font-size-lg);
}

.close-lightbox {
    position: absolute;
    top: 30px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-lightbox:hover {
    color: var(--color-accent);
}

/* Reduced motion for accessibility */
@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;
    }
}