/* ============================================
   Students Forum - Iftar Donation Campaign 2026
   Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
    --primary-green: #064E3B;
    --secondary-green: #065f46;
    --gold: #D97706;
    --gold-light: #F59E0B;
    --cream: #FFFBEB;
    --white: #FFFFFF;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --border-light: #E5E7EB;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Hind Siliguri', 'Noto Sans Bengali', 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--cream);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-green);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Section Padding */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.25rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    border-radius: 2px;
}

.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}

.header.scrolled {
    background: var(--primary-green);
    box-shadow: var(--shadow);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--gold);
}

.btn-donate-nav {
    background: var(--gold);
    color: var(--white);
    padding: 10px 25px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-donate-nav:hover {
    background: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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='%23ffffff' fill-opacity='0.05'%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");
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 20px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    color: var(--white);
    padding: 16px 40px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(217, 119, 6, 0.4);
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(217, 119, 6, 0.5);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--white);
    padding: 16px 40px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

/* Hero Decorative Elements */
.hero-decoration {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100px;
}

.mosque-silhouette {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 800px;
    height: auto;
    opacity: 0.1;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    color: var(--primary-green);
}

.about-content p {
    color: var(--text-light);
    font-size: 1.05rem;
    margin-bottom: 25px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--cream);
    border-radius: 12px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 5px;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--gold);
    border-radius: 16px;
    z-index: -1;
}

/* ============================================
   Donation Progress Section
   ============================================ */
.donation-progress {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    color: var(--white);
    position: relative;
}

.donation-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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='%23ffffff' fill-opacity='0.05'%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");
    opacity: 0.5;
}

.donation-progress .section-title h2,
.donation-progress .section-title p {
    color: var(--white);
}

.donation-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 50px;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.progress-raised {
    color: var(--gold-light);
    font-weight: 700;
}

.progress-goal {
    color: rgba(255, 255, 255, 0.8);
}

.progress-bar-container {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    height: 30px;
    overflow: hidden;
    position: relative;
    margin-bottom: 20px;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 100%);
    border-radius: 50px;
    width: 0;
    transition: width 2s ease-out;
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-percentage {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gold);
    margin: 30px 0;
}

.progress-remaining {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.donation-card .btn-primary {
    padding: 18px 50px;
    font-size: 1.2rem;
}

/* ============================================
   Transparency Section
   ============================================ */
.transparency {
    background: var(--cream);
}

.transparency-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.transparency-content h3 {
    margin-bottom: 25px;
    font-size: 1.5rem;
}

.cost-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.cost-table th,
.cost-table td {
    padding: 15px 20px;
    text-align: left;
}

.cost-table th {
    background: var(--primary-green);
    color: var(--white);
    font-weight: 600;
}

.cost-table tr:nth-child(even) {
    background: var(--cream);
}

.cost-table tr:hover {
    background: rgba(6, 78, 59, 0.05);
}

.cost-table td:last-child {
    text-align: right;
    font-weight: 600;
    color: var(--primary-green);
}

.photo-gallery h3 {
    margin-bottom: 25px;
    font-size: 1.5rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.gallery-item {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.9rem;
    transition: var(--transition);
    overflow: hidden;
}

.gallery-item:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.commitment-box {
    background: var(--white);
    border-left: 4px solid var(--gold);
    padding: 20px;
    border-radius: 0 12px 12px 0;
    margin-top: 30px;
}

.commitment-box h4 {
    color: var(--primary-green);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.commitment-box p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.95rem;
}

/* ============================================
   Sponsor Section
   ============================================ */
.sponsors {
    background: var(--white);
    text-align: center;
}

.sponsors-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 40px;
}

.sponsor-item {
    padding: 20px 30px;
    background: var(--cream);
    border-radius: 12px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 150px;
    min-height: 80px;
}

.sponsor-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    background: var(--primary-green);
}

.sponsor-item img {
    max-width: 120px;
    max-height: 50px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

.sponsor-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

.sponsor-label {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    color: var(--white);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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='%23ffffff' fill-opacity='0.05'%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");
    opacity: 0.5;
}

.contact .section-title h2,
.contact .section-title p {
    color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--white);
}

.contact-card h4 {
    color: var(--white);
    margin-bottom: 10px;
}

.contact-card p,
.contact-card a {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 1rem;
}

.contact-card a:hover {
    color: var(--gold);
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #25D366;
    color: var(--white);
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 15px;
    transition: var(--transition);
}

.whatsapp-btn:hover {
    background: #20BD5A;
    transform: translateY(-2px);
}

.whatsapp-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--primary-green);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    max-width: 400px;
}

.footer-dua {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
}

.footer-dua p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    font-style: italic;
    margin: 0;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    font-size: 0.9rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 992px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    
    .section {
        padding: 60px 0;
    }
    
    .about-grid,
    .transparency-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        order: -1;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary-green);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
        box-shadow: var(--shadow);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        width: 100%;
        text-align: center;
    }
    
    .btn-donate-nav {
        width: 100%;
        text-align: center;
        margin-top: 15px;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .donation-card {
        padding: 30px 20px;
    }
    
    .progress-percentage {
        font-size: 2.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .sponsors-grid {
        gap: 20px;
    }
    
    .sponsor-item {
        min-width: 120px;
        padding: 15px 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        margin-bottom: 40px;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
    
    .hero {
        min-height: 80vh;
        padding-top: 80px;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 15px;
    }
    
    .cost-table th,
    .cost-table td {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}