* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary-teal: #0A7C8C;
    --primary-dark: #0B3954;
    --silver: #C0C0C0;
    --silver-light: #E8E8E8;
    --silver-metallic: #A8B2B8;
    --gold: #D4AF37;
    --gold-bright: #F5A623;
    --gold-dark: #B8860B;
    --orange: #E87722;
    --copper: #D4824A;
    --black: #1A1A1A;
    --text-dark: #1A1A1A;
    --text-light: #FFFFFF;
    --bg-light: #F8F9FA;
    --gradient-silver: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --gradient-silver-badge: linear-gradient(135deg, #D4824A 0%, #E87722 100%);
    --gradient-gold: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --gradient-gold-dark: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --gradient-medhack: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    background-attachment: fixed;
    line-height: 1.6;
    overflow-x: hidden;
}
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}
/* Header */
.header {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    border-bottom: 2px solid rgba(212, 130, 74, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    height: 60px;
    display: block;
}

.header-invite {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
    text-align: right;
}

.header-invite .invite-name,
.hero .invite-name {
    color: var(--primary-teal);
    font-weight: 700;
}
/* Hero Section */
.hero {
    background: var(--gradient-medhack);
    padding: 80px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: rgba(212, 130, 74, 0.08);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -5%;
    width: 400px;
    height: 400px;
    background: rgba(232, 119, 34, 0.08);
    border-radius: 50%;
}
.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--text-light);
    margin-bottom: 20px;
    font-weight: 800;
    position: relative;
    z-index: 1;
}
.hero-title .highlight {
    color: var(--copper);
    position: relative;
    display: inline-block;
    text-shadow: 0 0 30px rgba(212, 130, 74, 0.5);
}
.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn-primary {
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(212, 130, 74, 0.4);
}
.btn-primary:hover {
    background: linear-gradient(90deg, #7D4829 0%, #BA7D54 25%, #c6956c 75%, #AD714D 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(232, 119, 34, 0.5);
}
.btn-large {
    font-size: 1.3rem;
    padding: 20px 50px;
    position: relative;
    z-index: 1;
}
.btn-large span {
    font-size: 1.5rem;
}
/* Divider Section */
.divider {
    padding: 60px 20px;
    text-align: center;
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(10px);
    cursor: pointer;
    transition: all 0.3s ease;
    border-top: 1px solid rgba(212, 130, 74, 0.2);
    border-bottom: 1px solid rgba(212, 130, 74, 0.2);
}
.divider:hover {
    background: rgba(26, 26, 26, 0.8);
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--text-light);
    font-weight: 700;
    position: relative;
    display: inline-block;
    user-select: none;
}
.section-title .toggle-icon {
    display: inline-block;
    margin-left: 10px;
    transition: transform 0.3s ease;
    font-size: 0.8em;
    color: var(--copper);
}
.section-title .toggle-icon.rotated {
    transform: rotate(-180deg);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    border-radius: 2px;
}
/* Plans Section */
.plans {
    padding: 40px 20px 80px;
    max-height: 5000px;
    overflow: hidden;
    transition: max-height 0.5s ease, opacity 0.5s ease, padding 0.5s ease;
    opacity: 1;
    background: transparent;
}
.plans.collapsed {
    max-height: 0 !important;
    opacity: 0 !important;
    padding: 0 20px !important;
    visibility: hidden;
}
.plan-category {
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(15px);
    border-radius: 30px;
    padding: 50px 40px;
    margin-bottom: 50px;
    box-shadow: 0 10px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(212, 130, 74, 0.2);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(212, 130, 74, 0.15);
}
.plan-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
}
.plan-category[data-color="silver"],
.plan-category[data-color="gold"] {
    background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    color: var(--text-light);
}
.plan-category[data-color="silver"]::before,
.plan-category[data-color="gold"]::before {
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
}
/* Category Header */
.category-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}
.category-badge {
    display: inline-block;
    padding: 8px 24px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    box-shadow: 0 2px 15px rgba(212, 130, 74, 0.4);
}
.category-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary-dark);
    margin-bottom: 20px;
    font-weight: 800;
}
.plan-category[data-color="silver"] .category-title,
.plan-category[data-color="gold"] .category-title {
    color: var(--text-light);
}
.highlight-text,
.highlight-text-gold {
    color: var(--copper);
    text-shadow: 0 0 30px rgba(212, 130, 74, 0.5);
}
.category-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.85);
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
}
.plan-category[data-color="silver"] .category-description,
.plan-category[data-color="gold"] .category-description {
    color: rgba(255, 255, 255, 0.85);
}
.category-stats {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}
.stat-badge {
    background: var(--bg-light);
    padding: 20px 30px;
    border-radius: 15px;
    text-align: center;
}
.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--copper);
    margin-bottom: 5px;
}
.plan-category[data-color="silver"] .stat-number,
.plan-category[data-color="gold"] .stat-number {
    color: var(--copper);
}
.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.4;
}
.plan-category[data-color="silver"] .stat-label,
.plan-category[data-color="gold"] .stat-label {
    color: rgba(255, 255, 255, 0.75);
}
/* Plans Grid */
.plans-grid {
    display: flex;
    flex-direction: column;
    gap: 50px;
}
.plan-group {
    position: relative;
}
.group-title {
    font-size: 1.3rem;
    color: var(--primary-dark);
    margin-bottom: 25px;
    font-weight: 700;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}
.plan-category[data-color="silver"] .group-title,
.plan-category[data-color="gold"] .group-title {
    color: var(--text-light);
}
.group-title::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient-silver);
    border-radius: 2px;
}
.plan-category[data-color="silver"] .group-title::before,
.plan-category[data-color="gold"] .group-title::before {
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
}
/* Plan Cards */
.plan-cards {
    /* display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px; */
    max-width: 500px;
    margin: 0 auto;
}
.plan-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 2px solid #e9ecef;
    border-radius: 20px;
    padding: 15px 10px;
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
    border-color: var(--copper);
}
.plan-category[data-color="silver"] .plan-card:hover,
.plan-category[data-color="gold"] .plan-card:hover {
    border-color: var(--copper);
}
.plan-card:hover::before {
    opacity: 1;
}
.card-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    filter: grayscale(20%);
}
.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.plan-category[data-color="gold"] .card-title {
    color: var(--text-dark);
}
.card-badge {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    color: white;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.plan-card-combo {
    background: linear-gradient(135deg, #f0f8fa 0%, #ffffff 100%);
    border-color: var(--primary-teal);
}
.plan-category[data-color="gold"] .plan-card-combo {
    background: linear-gradient(135deg, #fff8f0 0%, #ffffff 100%);
    border-color: var(--gold);
}
.card-discount {
    margin-top: 10px;
    padding: 8px 16px;
    background: var(--copper);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}
/* Footer */
.footer {
    background: var(--gradient-medhack);
    color: white;
    padding: 60px 20px 30px;
    text-align: center;
    position: relative;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
}
.footer-content {
    max-width: 800px;
    margin: 0 auto 40px;
}
.footer-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: var(--copper);
    margin-bottom: 20px;
    font-weight: 800;
    text-shadow: 0 0 20px rgba(212, 130, 74, 0.3);
}
.footer-description {
    font-size: clamp(1rem, 2vw, 1.1rem);
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 30px;
}
.btn-footer {
    background: linear-gradient(90deg, #AD714D 0%, #c6956c 25%, #BA7D54 75%, #7D4829 100%);
    color: white;
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 15px;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(212, 130, 74, 0.4);
}
.btn-footer:hover {
    background: linear-gradient(90deg, #7D4829 0%, #BA7D54 25%, #c6956c 75%, #AD714D 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(232, 119, 34, 0.5);
}
.footer-copyright {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-copyright p {
    margin: 0;
    opacity: 0.6;
    font-size: 0.9rem;
}
/* Responsive Design */
@media (max-width: 1200px) {
    .plan-cards {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px;
    }
    .btn-large {
        font-size: 1.1rem;
        padding: 18px 35px;
    }
    .logo {
        height: 50px;
    }
    .plan-category {
        padding: 40px 25px;
        border-radius: 20px;
    }
    .category-header {
        margin-bottom: 40px;
    }
    .stat-badge {
        padding: 15px 20px;
    }
    .stat-number {
        font-size: 2rem;
    }
    .plan-cards {
        grid-template-columns: 1fr;
    }
    .plans-grid {
        gap: 40px;
    }
}
@media (max-width: 750px) {
    .header .container {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    .header-invite {
        text-align: center;
        font-size: 0.9rem;
    }
}
@media (max-width: 480px) {
    .header-invite {
        font-size: 0.85rem;
    }
    .plan-category {
        padding: 30px 20px;
    }
    .category-title {
        font-size: 1.8rem;
    }
    .card-icon {
        font-size: 2.5rem;
    }
    .card-title {
        font-size: 1.1rem;
    }
}
/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.plan-category {
    animation: fadeInUp 0.6s ease-out;
}
.plan-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}
.plan-card:nth-child(1) { animation-delay: 0.1s; }
.plan-card:nth-child(2) { animation-delay: 0.2s; }
.plan-card:nth-child(3) { animation-delay: 0.3s; }
.plan-card:nth-child(4) { animation-delay: 0.4s; }