/* Sponsorship & Exhibition Enhanced Styles */

/* Override any navbar issues - ensure proper layout */
header .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

header .navbar-logo-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-right: 2rem;
    flex-shrink: 0;
}

.sponsorship-main {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    background-attachment: fixed;
    position: relative;
}

.sponsorship-hero {
    background: linear-gradient(
        135deg,
        rgba(99, 102, 241, 0.2),
        rgba(139, 92, 246, 0.2)
    );
    padding: 6rem 2rem;
    text-align: center;
    border-bottom: 2px solid rgba(99, 102, 241, 0.3);
    position: relative;
    z-index: 1;
}

.sponsorship-hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #a5b4fc, #c4b5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    font-family: "Space Grotesk", sans-serif;
}

.sponsorship-hero h2 {
    font-size: 1.8rem;
    color: #cbd5e1;
    font-weight: 600;
}

.sponsorship-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    position: relative;
    z-index: 1;
}

.message-section {
    margin-bottom: 4rem;
}

.message-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a5b4fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    text-align: center;
}

.message-box {
    background: rgba(30, 27, 75, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
}

.message-box p {
    font-size: 1.1rem;
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.message-box p:last-child {
    margin-bottom: 0;
}

.sponsorship-tiers {
    margin-bottom: 4rem;
}

.sponsorship-tiers h2 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a5b4fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    text-align: center;
}

.tier-intro {
    text-align: center;
    font-size: 1.1rem;
    color: #a5b4fc;
    margin-bottom: 2.5rem;
}

.tier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.tier-card {
    background: rgba(30, 27, 75, 0.5);
    border: 2px solid;
    border-radius: 12px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.tier-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
}

.tier-card.platinum {
    border-color: #fbbf24;
    background: linear-gradient(
        135deg,
        rgba(251, 191, 36, 0.1),
        rgba(251, 146, 60, 0.1)
    );
}

.tier-card.platinum .tier-header {
    background: linear-gradient(135deg, #fbbf24, #f97316);
    color: #000;
}

.tier-card.gold {
    border-color: #fbbf24;
    background: linear-gradient(
        135deg,
        rgba(251, 191, 36, 0.08),
        rgba(124, 58, 237, 0.08)
    );
}

.tier-card.gold .tier-header {
    background: linear-gradient(135deg, #fbbf24, #fbbf24);
    color: #000;
}

.tier-card.silver {
    border-color: #e2e8f0;
    background: linear-gradient(
        135deg,
        rgba(226, 232, 240, 0.08),
        rgba(99, 102, 241, 0.08)
    );
}

.tier-card.silver .tier-header {
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    color: #1e293b;
}

.tier-card.bronze {
    border-color: #d4672a;
    background: linear-gradient(
        135deg,
        rgba(212, 103, 42, 0.08),
        rgba(139, 92, 246, 0.08)
    );
}

.tier-card.bronze .tier-header {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #fff;
}

.tier-header {
    padding: 1.5rem;
    text-align: center;
}

.tier-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.tier-benefits {
    padding: 2rem;
}

.tier-benefits ul {
    list-style: none;
    padding: 0;
}

.tier-benefits li {
    color: #cbd5e1;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.tier-benefits li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.exhibition-section {
    background: rgba(30, 27, 75, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    margin-bottom: 3rem;
}

.exhibition-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #a5b4fc;
    margin-bottom: 1.5rem;
}

.exhibition-section > p {
    color: #cbd5e1;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.exhibition-list {
    list-style: none;
    padding: 0;
}

.exhibition-list li {
    color: #cbd5e1;
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    font-size: 1rem;
}

.exhibition-list li:before {
    content: "★";
    position: absolute;
    left: 0;
    color: #f472b6;
    font-weight: bold;
    font-size: 1.2rem;
}

.contact-section {
    background: linear-gradient(
        135deg,
        rgba(99, 102, 241, 0.15),
        rgba(139, 92, 246, 0.15)
    );
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
}

.contact-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #a5b4fc;
    margin-bottom: 1rem;
}

.contact-section > p {
    color: #cbd5e1;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-details {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
    padding: 1.5rem;
    display: inline-block;
}

.contact-details p {
    color: #cbd5e1;
    margin: 0.5rem 0;
    font-size: 1rem;
}

.contact-details a {
    color: #a5b4fc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-details a:hover {
    color: #f472b6;
    text-decoration: underline;
}

/* ============================================================
   MOBILE RESPONSIVE  (≤ 768 px) - MATCHING HOME PAGE
   ============================================================ */
@media (max-width: 768px) {
    /* ─── Navbar Mobile Fix ─── */
    header .navbar {
        padding: 0 1rem;
        flex-wrap: nowrap;
    }

    header .navbar-logo-group {
        gap: 0.75rem;
        margin-right: 0;
        flex: 0 0 auto;
    }

    header .iit-logo {
        height: 32px;
    }

    header .logo {
        height: 42px;
    }

    /* Ensure hamburger stays on same line */
    header .hamburger {
        margin-left: auto;
        flex-shrink: 0;
    }

    /* ─── Hero Section ─── */
    .sponsorship-hero {
        padding: 4rem 1.25rem 3rem;
    }

    .sponsorship-hero h1 {
        font-size: 2.2rem;
        letter-spacing: -0.5px;
        line-height: 1.2;
    }

    .sponsorship-hero h2 {
        font-size: 1.2rem;
        margin-top: 0.5rem;
    }

    /* ─── Content Container ─── */
    .sponsorship-content {
        padding: 2.5rem 1.25rem;
    }

    /* ─── Message Section ─── */
    .message-section {
        margin-bottom: 3rem;
    }

    .message-section h2 {
        font-size: 1.7rem;
        margin-bottom: 1.5rem;
    }

    .message-box {
        padding: 1.5rem;
        border-radius: 10px;
    }

    .message-box p {
        font-size: 0.93rem;
        line-height: 1.7;
        margin-bottom: 1.2rem;
        text-align: left;
    }

    /* ─── Sponsorship Tiers ─── */
    .sponsorship-tiers {
        margin-bottom: 3rem;
    }

    .sponsorship-tiers h2 {
        font-size: 1.7rem;
        margin-bottom: 0.75rem;
    }

    .tier-intro {
        font-size: 0.95rem;
        margin-bottom: 1.75rem;
        padding: 0 0.5rem;
    }

    .tier-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .tier-card {
        border-radius: 10px;
    }

    .tier-header {
        padding: 1.2rem;
    }

    .tier-header h3 {
        font-size: 1.4rem;
    }

    .tier-benefits {
        padding: 1.5rem;
    }

    .tier-benefits li {
        font-size: 0.88rem;
        margin-bottom: 0.7rem;
        padding-left: 1.3rem;
    }

    /* ─── Exhibition Section ─── */
    .exhibition-section {
        padding: 1.75rem 1.25rem;
        margin-bottom: 2.5rem;
        border-radius: 10px;
    }

    .exhibition-section h2 {
        font-size: 1.5rem;
        margin-bottom: 1.2rem;
    }

    .exhibition-section > p {
        font-size: 0.95rem;
        margin-bottom: 1.2rem;
    }

    .exhibition-list li {
        font-size: 0.88rem;
        margin-bottom: 0.85rem;
        padding-left: 1.75rem;
    }

    .exhibition-list li:before {
        font-size: 1rem;
    }

    /* ─── Contact Section ─── */
    .contact-section {
        padding: 2rem 1.25rem;
        border-radius: 10px;
    }

    .contact-section h2 {
        font-size: 1.5rem;
        margin-bottom: 0.85rem;
    }

    .contact-section > p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
        padding: 0 0.25rem;
    }

    .contact-details {
        padding: 1.25rem;
        width: 100%;
        max-width: 100%;
        display: block;
    }

    .contact-details p {
        font-size: 0.88rem;
        margin: 0.7rem 0;
    }

    .contact-details strong {
        display: inline-block;
        min-width: 50px;
    }
}

/* ============================================================
   EXTRA-SMALL  (≤ 360 px) - MATCHING HOME PAGE
   ============================================================ */
@media (max-width: 360px) {
    /* ─── Navbar Extra Small ─── */
    header .iit-logo {
        height: 26px;
    }

    header .logo {
        height: 34px;
    }

    .sponsorship-hero {
        padding: 3.5rem 1rem 2.5rem;
    }

    .sponsorship-hero h1 {
        font-size: 1.85rem;
    }

    .sponsorship-hero h2 {
        font-size: 1rem;
    }

    .sponsorship-content {
        padding: 2rem 1rem;
    }

    .message-section h2,
    .sponsorship-tiers h2,
    .exhibition-section h2,
    .contact-section h2 {
        font-size: 1.45rem;
    }

    .message-box {
        padding: 1.25rem;
    }

    .message-box p {
        font-size: 0.85rem;
    }

    .tier-intro {
        font-size: 0.88rem;
    }

    .tier-header h3 {
        font-size: 1.25rem;
    }

    .tier-benefits {
        padding: 1.25rem;
    }

    .exhibition-section {
        padding: 1.5rem 1rem;
    }

    .contact-section {
        padding: 1.75rem 1rem;
    }

    .contact-details {
        padding: 1rem;
    }
}