:root {
    --primary-color: #2563eb;
    --navy: #003366;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --bg-light: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.8);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
}

header {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.logo img {
    height: 45px;
    width: auto;
}

.menuduzenle ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.menuduzenle ul li a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.menuduzenle ul li a:hover {
    color: var(--primary-color);
}

.hero-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cms-card {
    background: var(--white);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    height: 100%;
}

.cms-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.btn-modern {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: background 0.3s;
}

.btn-modern:hover {
    background: var(--secondary-color);
}

/* Advanced Corporate Layout Utilities */
.section-padding { padding: 120px 0; }
.bg-slate { background-color: #f1f5f9; }
.bg-dark-slate { background-color: #0f172a; }

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: #eff6ff;
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 600;
}

.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    color: white;
}

.image-stack {
    position: relative;
    height: 450px;
}

.image-stack-item {
    position: absolute;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 5px solid white;
}

.image-stack-item-1 { width: 80%; height: 80%; top: 0; left: 0; z-index: 2; object-fit: cover; }
.image-stack-item-2 { width: 60%; height: 60%; bottom: 0; right: 0; z-index: 1; object-fit: cover; }

.feature-box {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: var(--shadow);
    color: var(--primary-color);
    font-size: 1.5rem;
}

.cta-banner {
    background: linear-gradient(rgba(37, 99, 235, 0.9), rgba(30, 64, 175, 0.9)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 100px 0;
    color: white;
    border-radius: 30px;
    text-align: center;
}

/* Hierarchical Menu / Dropdown */
.menuduzenle ul li { position: relative; }
.menuduzenle ul li ul {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    display: none;
    padding: 15px 0;
    border-radius: 12px;
    z-index: 100;
    border: 1px solid rgba(0,0,0,0.05);
}
.menuduzenle ul li:hover > ul { 
    display: block; 
    animation: fadeInDown 0.3s ease;
}
.menuduzenle ul li ul li { 
    width: 100%; 
    display: block; 
    padding: 0 20px; 
    margin: 0 !important;
}
.menuduzenle ul li ul li a { 
    padding: 10px 0; 
    display: block; 
    width: 100%; 
    border-bottom: 1px solid rgba(0,0,0,0.03);
}
.menuduzenle ul li ul li:last-child a { border-bottom: none; }

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}



footer {
    background: #0f172a;
    color: white;
    padding: 80px 0 40px;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-link {
    color: #94a3b8;
    text-decoration: none;
    display: block;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

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

/* Modern Hero Countdown Timer */
.countdown-wrapper {
    position: relative;
    max-width: 820px;
    margin: 2rem auto 2.5rem;
    padding: 2rem 1.5rem;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.countdown-date-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    background: rgba(37, 99, 235, 0.25);
    border: 1px solid rgba(96, 165, 250, 0.4);
    border-radius: 50px;
    color: #93c5fd;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.25);
}

.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.countdown-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    padding: 1.2rem 1rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 18px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.countdown-box:hover {
    transform: translateY(-4px);
    border-color: rgba(96, 165, 250, 0.5);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.countdown-number {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1;
    color: #ffffff;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.countdown-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: #93c5fd;
    margin-top: 0.6rem;
    text-transform: uppercase;
}

.countdown-separator {
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.35);
    margin-top: -1.2rem;
    animation: colonPulse 2s ease-in-out infinite;
}

@keyframes colonPulse {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(0.9); }
}

/* Mobile Offcanvas Navigation */
.mobile-toggle-btn {
    background: transparent;
    border: none;
    padding: 6px 10px;
    cursor: pointer;
    border-radius: 10px;
    color: #003366;
    transition: all 0.2s ease;
}
.mobile-toggle-btn:hover, .mobile-toggle-btn:focus {
    background: rgba(0, 51, 102, 0.08);
}
.mobile-nav-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.mobile-nav-link {
    display: block;
    padding: 0.95rem 1.5rem;
    color: #f1f5f9;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
}
.mobile-nav-link:hover, .mobile-nav-link:focus {
    color: #60a5fa;
    background: rgba(255, 255, 255, 0.05);
    padding-left: 1.75rem;
}
.mobile-nav-link-group {
    padding-right: 1rem;
}
.mobile-submenu-toggle {
    background: transparent;
    border: none;
    color: #94a3b8;
    padding: 0.6rem 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.mobile-submenu-toggle:hover {
    color: #ffffff;
}
.mobile-subnav-list {
    background: rgba(0, 0, 0, 0.28);
    padding: 0.4rem 0;
}
.mobile-subnav-link {
    display: block;
    padding: 0.65rem 2rem;
    color: #cbd5e1;
    font-size: 0.92rem;
    text-decoration: none;
    transition: all 0.2s;
}
.mobile-subnav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
    padding-left: 2.25rem;
}

/* Comprehensive Mobile Responsiveness Overrides */
@media (max-width: 768px) {
    .countdown-wrapper {
        padding: 1.5rem 0.75rem !important;
        margin: 1.5rem 0.5rem 2rem !important;
        border-radius: 20px !important;
    }
    .countdown-timer {
        gap: 0.35rem !important;
        margin-top: 1.2rem !important;
    }
    .countdown-box {
        min-width: 0 !important;
        flex: 1 1 0 !important;
        padding: 0.75rem 0.3rem !important;
        border-radius: 12px !important;
    }
    .countdown-number {
        font-size: 1.85rem !important;
    }
    .countdown-label {
        font-size: 0.65rem !important;
        letter-spacing: 0.06em !important;
        margin-top: 0.35rem !important;
    }
    .countdown-separator {
        font-size: 1.3rem !important;
        margin-top: -0.6rem !important;
    }
    .countdown-date-badge {
        font-size: 0.85rem !important;
        padding: 0.45rem 1.2rem !important;
    }

    /* Section 2 Title */
    .benmun-title-section {
        padding: 60px 0 80px 0 !important;
    }
    .benmun-shine-title {
        font-size: clamp(2.4rem, 10vw, 3.5rem) !important;
        letter-spacing: 0.1em !important;
    }

    /* Section 3 SG Letter */
    .section-padding {
        padding: 60px 0 !important;
    }
    .letter-content {
        font-size: 1.05rem !important;
        line-height: 1.75 !important;
    }

    /* Section 4 Contact & Map */
    .benmun-contact-section {
        padding: 55px 0 65px 0 !important;
    }
    .benmun-contact-card {
        padding: 1rem 1.15rem !important;
    }
    .benmun-map-container {
        min-height: 320px !important;
        margin-top: 1.5rem;
    }
    .benmun-map-container iframe {
        min-height: 320px !important;
    }

    /* Committees Mobile */
    .committees-hero-section {
        padding: 55px 0 50px !important;
    }
    .committees-list-section {
        padding: 50px 0 70px !important;
    }
    .committee-image-wrap {
        height: 220px !important;
    }
    .committee-body {
        padding: 1.25rem !important;
    }
    .committee-title {
        font-size: 1.25rem !important;
    }

    /* About BENMUN Mobile */
    .benmun-page-hero {
        padding: 55px 0 50px !important;
    }
    .benmun-main-section {
        padding: 50px 0 70px !important;
    }
    .benmun-glass-card {
        padding: 1.5rem 1.25rem !important;
    }
    .benmun-cta-banner {
        padding: 2.25rem 1.5rem !important;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .countdown-box {
        padding: 0.6rem 0.2rem !important;
    }
    .countdown-number {
        font-size: 1.5rem !important;
    }
    .countdown-label {
        font-size: 0.58rem !important;
    }
    .countdown-separator {
        font-size: 1rem !important;
    }
    .countdown-date-badge {
        font-size: 0.78rem !important;
        padding: 0.4rem 0.9rem !important;
    }
}