/* ===== CSS Variables ===== */
:root {
    --primary: #00d9ff;
    --secondary: #ff6b35;
    --accent: #7b2cbf;
    --dark-bg: #0a0e27;
    --darker-bg: #050814;
    --card-bg: #12172e;
    --text-primary: #ffffff;
    --text-secondary: #a8b2d1;
    --border-color: rgba(0, 217, 255, 0.2);
    --shadow: rgba(0, 0, 0, 0.5);
    
    /* Rank Colors */
    --bronze: #cd7f32;
    --silver: #c0c0c0;
    --gold: #ffd700;
    --platinum: #00CED1;
    --diamond: #b9f2ff;
    --champion: #a020f0;
    --grand-champion: #ff1744;
    --supersonic-legend: #f8f8ff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Rajdhani', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ===== Navigation ===== */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: none;
    list-style: none;
    gap: 30px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--primary);
    position: relative;
    transition: all 0.3s;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.mobile-menu-btn.active .hamburger {
    background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-btn.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 400px;
    margin: 0 auto;
}

.mobile-menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 25px 15px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: all 0.3s;
    min-height: 100px;
}

.mobile-menu-item:hover,
.mobile-menu-item.active {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.mobile-menu-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.mobile-menu-item span:last-child {
    font-size: 0.95rem;
    font-weight: 600;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px 60px;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2rem;
    margin-bottom: 15px;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    border: 2px solid;
    width: 100%;
    max-width: 250px;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--darker-bg);
}

.btn-primary:hover {
    background: transparent;
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 217, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--darker-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 217, 255, 0.3);
}

/* ===== Sections ===== */
section {
    padding: 60px 20px;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--primary);
}

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px var(--shadow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 1rem;
}

.feature-link {
    color: var(--primary);
    font-weight: 600;
    transition: color 0.3s;
}

.feature-link:hover {
    color: var(--secondary);
}

/* ===== Ranks Grid ===== */
.ranks-section {
    background: var(--darker-bg);
}

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

.rank-card {
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s;
    border: 2px solid;
    position: relative;
    overflow: hidden;
}

.rank-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    opacity: 0.1;
    z-index: 0;
}

.rank-name {
    position: relative;
    z-index: 1;
}

.rank-card:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px var(--shadow);
}

.bronze { background-color: rgba(205, 127, 50, 0.1); border-color: var(--bronze); color: var(--bronze); }
.silver { background-color: rgba(192, 192, 192, 0.1); border-color: var(--silver); color: var(--silver); }
.gold { background-color: rgba(255, 215, 0, 0.1); border-color: var(--gold); color: var(--gold); }
.platinum { background-color: rgba(0, 206, 209, 0.1); border-color: var(--platinum); color: var(--platinum); }
.diamond { background-color: rgba(185, 242, 255, 0.1); border-color: var(--diamond); color: var(--diamond); }
.champion { background-color: rgba(160, 32, 240, 0.1); border-color: var(--champion); color: var(--champion); }
.grand-champion { background-color: rgba(255, 23, 68, 0.1); border-color: var(--grand-champion); color: var(--grand-champion); }
.supersonic-legend { background-color: rgba(248, 248, 255, 0.1); border-color: var(--supersonic-legend); color: var(--supersonic-legend); }

/* ===== Footer ===== */
.footer {
    background: var(--darker-bg);
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer p {
    margin: 5px 0;
}

/* ===== Tablet Breakpoint (768px) ===== */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .mobile-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .ranks-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
}

/* ===== Desktop Breakpoint (1024px) ===== */
@media (min-width: 1024px) {
    section {
        padding: 80px 20px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}