* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8b5cf6;
    --secondary-color: #06b6d4;
    --accent-color: #ec4899;
    --dark-color: #1e1b4b;
    --light-color: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #ffffff;
    --gradient-primary: linear-gradient(135deg, #8b5cf6, #06b6d4);
    --gradient-secondary: linear-gradient(135deg, #06b6d4, #8b5cf6);
    --gradient-accent: linear-gradient(135deg, #ec4899, #8b5cf6);
    --gradient-dark: linear-gradient(135deg, #1e1b4b, #312e81);
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-purple: 0 20px 25px -5px rgba(139, 92, 246, 0.3);
    --shadow-cyan: 0 20px 25px -5px rgba(6, 182, 212, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background: var(--light-color);
}

/* Header & Navigation (same as index) */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.header.scrolled {
    background: rgba(248, 250, 252, 0.98);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-menu a:hover {
    color: var(--primary-color);
    background: rgba(139, 92, 246, 0.1);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::after {
    width: 80%;
}

.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.burger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.burger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.burger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section for About */
.hero {
    height: 90vh;
    background: linear-gradient(135deg, rgba(40, 40, 41, 0.6), rgba(6, 182, 212, 0.4)), url('image/coop2.jpeg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
    z-index: 2;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: slideInUp 1s ease-out;
    font-weight: 800;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.4rem;
    animation: slideInUp 1s ease-out 0.2s both;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styles */
.section {
    padding: 6rem 0;
    position: relative;
}

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

.section:nth-child(odd) {
    background: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Stats Section - Running Numbers */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    color: #64748b;
    margin-top: 0.5rem;
}

/* Tabs Section */
.tabs-container {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
    margin: 2rem 0;
}

.tabs-header {
    display: flex;
    background: var(--gradient-primary);
}

.tab-btn {
    flex: 1;
    padding: 1.5rem;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
}

.tab-content {
    padding: 3rem;
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.tab-content p {
    line-height: 1.7;
    margin-bottom: 1rem;
    color: #64748b;
}

/* Accordion Section */
.accordion-container {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.accordion-header {
    padding: 1.5rem 2rem;
    background: var(--gradient-secondary);
    color: var(--text-light);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.accordion-header:hover {
    background: var(--gradient-primary);
}

.accordion-header i {
    transition: transform 0.3s ease;
}

.accordion-header.active i {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #f8fafc;
}

.accordion-content.active {
    max-height: 500px;
    /* Adjust as needed */
}

.accordion-content-inner {
    padding: 2rem;
    color: #64748b;
    line-height: 1.7;
}

/* Content Cards */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.content-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(139, 92, 246, 0.1);
}

.content-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-purple);
}

.content-card i {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    display: block;
}

.content-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.content-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Timeline Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin: 3rem 0;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    left: -10px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: auto;
    right: -10px;
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Fade-in animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Footer (same as index) */
.footer {
    background: var(--gradient-dark);
    color: var(--text-light);
    text-align: center;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    margin-bottom: 0.5rem;
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {

    border-top: 1px solid #444;
    padding-top: 2rem;
    margin-top: 2rem;
}

.avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-top: 1rem;
}

.text {
    text-align: center;
    margin-top: 2rem;
    color: #64748b;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .burger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(248, 250, 252, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 4rem 0;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
    }

    .timeline-item .timeline-content::before {
        left: 10px;
    }

    .tabs-header {
        flex-direction: column;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }
}