/* ==========================================
   PROFESSIONAL USDT MINING PLATFORM
   Modern Design with Glassmorphism Effects
   ========================================== */

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

:root {
    /* Color Palette */
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;

    /* Background Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #131829;
    --bg-tertiary: #1a1f35;
    --bg-card: rgba(26, 31, 53, 0.6);
    --bg-card-solid: rgba(26, 31, 53, 0.95);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Border Colors */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-highlight: rgba(0, 212, 255, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #f59e0b 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e27 0%, #131829 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 64px rgba(0, 212, 255, 0.15);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 16px;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */

.header {
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--border-color);
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: var(--shadow-lg);
    padding: 12px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

.auth-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.user-greeting {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 8px 16px;
    background: var(--glass-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.mobile-menu-btn {
    display: none;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
    animation: slideDown 0.3s ease;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 16px 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-nav-link::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-link:hover {
    background: var(--glass-bg);
    color: var(--primary);
}

.mobile-nav-link:hover::before {
    opacity: 1;
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
    padding: 180px 0 100px;
    background: var(--gradient-primary);
    background-image:
        radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(124, 58, 237, 0.2) 0%, transparent 50%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 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='0.03'%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 {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 48px;
    line-height: 1.8;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.1s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================
   FEATURES SECTION
   ========================================== */

.features {
    padding: 100px 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 48px 36px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-highlight);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
    color: white;
    box-shadow: var(--shadow-glow);
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    background: var(--gradient-primary);
    border-radius: 23px;
    opacity: 0.3;
    filter: blur(15px);
    z-index: -1;
}

.feature-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ==========================================
   PRICING PLANS
   ========================================== */

.plans {
    padding: 100px 0;
    background: var(--bg-secondary);
    position: relative;
}

.plans::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(0, 212, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.plan-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 48px 36px;
    border-radius: 24px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    transform: translateY(40px);
}

.plan-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.plan-card.featured {
    border-color: var(--primary);
    background: var(--bg-card-solid);
    transform: scale(1.05);
}

.plan-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.plan-card.featured::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-primary);
    border-radius: 26px;
    opacity: 0.1;
    z-index: -1;
    filter: blur(20px);
}

.badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    padding: 6px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-glow);
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.plan-price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.plan-period {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.plan-features {
    list-style: none;
    margin-bottom: 32px;
    text-align: left;
}

.plan-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-features i {
    color: var(--success);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ==========================================
   HOW IT WORKS
   ========================================== */

.about {
    padding: 100px 0;
}

.steps {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.step {
    text-align: center;
    flex: 1;
    min-width: 250px;
    position: relative;
}

.step-number {
    width: 88px;
    height: 88px;
    background: var(--gradient-primary);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 auto 24px;
    color: white;
    box-shadow: var(--shadow-glow);
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    inset: -4px;
    background: var(--gradient-primary);
    border-radius: 28px;
    opacity: 0.3;
    filter: blur(20px);
    z-index: -1;
}

.step h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   DASHBOARD
   ========================================== */

.dashboard {
    padding: 140px 0 100px;
}

.dashboard-header {
    text-align: center;
    margin-bottom: 60px;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-welcome {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 32px;
}

.dashboard-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 36px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-lg);
}

.card-header {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
}

/* Balance Card */
.balance-card {
    background: var(--gradient-primary);
    border: none;
    position: relative;
    overflow: hidden;
}

.balance-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.balance-card .card-header h3 {
    color: white;
    -webkit-text-fill-color: white;
    position: relative;
    z-index: 1;
}

.balance-amount {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin: 24px 0;
    position: relative;
    z-index: 1;
}

.currency {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 600;
}

.amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.mining-status {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--danger);
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 20px currentColor;
}

.status-indicator.active {
    background: var(--success);
}

#miningStatusText {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

/* Mining Card */
.mining-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.mining-stat {
    text-align: center;
    padding: 20px;
    background: var(--glass-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.mining-controls {
    text-align: center;
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 16px;
}

/* Animation Card */
.animation-card {
    text-align: center;
}

.mining-animation {
    position: relative;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 24px 0;
}

.miner {
    font-size: 5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.5));
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    box-shadow: 0 0 10px currentColor;
}

@keyframes float {
    0%, 100% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-40px) scale(1);
    }
}

.live-counter {
    color: var(--success);
    font-weight: 700;
    font-size: 1.1rem;
    padding: 16px 24px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(16, 185, 129, 0.3);
    display: inline-block;
}

/* History Card */
.history-list {
    max-height: 320px;
    overflow-y: auto;
    padding-right: 8px;
}

.history-list::-webkit-scrollbar {
    width: 6px;
}

.history-list::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.no-activity {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s ease;
    border-radius: 12px;
}

.history-item:hover {
    background: var(--glass-bg);
}

.history-item:last-child {
    border-bottom: none;
}

.history-icon {
    width: 48px;
    height: 48px;
    background: rgba(239, 68, 68, 0.15);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--danger);
    font-size: 1.2rem;
}

.history-details {
    flex: 1;
}

.history-title {
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.history-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.history-amount {
    color: var(--danger);
    font-weight: 700;
    font-size: 1.1rem;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
    padding: 14px 32px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    letter-spacing: 0.02em;
}

.btn i {
    font-size: 0.9em;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    position: relative;
    overflow: hidden;
}

.btn-outline::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-outline:hover {
    color: white;
    border-color: transparent;
}

.btn-outline:hover::before {
    opacity: 1;
}

.btn-outline span {
    position: relative;
    z-index: 1;
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    box-shadow: 0 8px 30px rgba(239, 68, 68, 0.4);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ==========================================
   FORMS
   ========================================== */

.withdraw-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}

.form-group input.error {
    border-color: var(--danger);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* ==========================================
   MODAL
   ========================================== */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.modal-content {
    background: var(--bg-tertiary);
    margin: 5% auto;
    padding: 48px;
    border-radius: 24px;
    width: 90%;
    max-width: 480px;
    position: relative;
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.close {
    position: absolute;
    right: 24px;
    top: 24px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
}

.close:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    transform: rotate(90deg);
}

.modal-content h2 {
    margin-bottom: 32px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
}

.modal-content form {
    margin-bottom: 20px;
}

.modal-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--text-secondary);
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.modal-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s ease;
}

.modal-footer a:hover {
    color: var(--primary-dark);
}

/* ==========================================
   ALERTS
   ========================================== */

.alert {
    padding: 18px 24px;
    border-radius: 12px;
    margin: 24px auto;
    max-width: 600px;
    text-align: center;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    animation: slideDown 0.3s ease;
}

.alert.success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background: var(--bg-secondary);
    padding: 80px 0 32px;
    margin-top: 100px;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 700;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.footer-section a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-links a {
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    transform: none;
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-stats {
        gap: 32px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .plan-card.featured {
        transform: scale(1);
    }

    .plan-card.featured:hover {
        transform: translateY(-8px);
    }

    .mining-stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .features-grid,
    .plans-grid {
        grid-template-columns: 1fr;
    }

    .steps {
        flex-direction: column;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 20px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .auth-buttons {
        gap: 8px;
    }

    .user-greeting {
        display: none;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 1rem;
    }

    .modal-content {
        padding: 36px 24px;
        margin: 10% auto;
    }

    .amount {
        font-size: 2.5rem;
    }

    .miner {
        font-size: 3.5rem;
    }

    .dashboard-card {
        padding: 28px;
    }

    .feature-card,
    .plan-card {
        padding: 36px 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }

    .social-links {
        justify-content: center;
    }

    .logo span {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .dashboard-header h1 {
        font-size: 2rem;
    }

    .plan-price {
        font-size: 2.5rem;
    }
}

/* ==========================================
   SCROLLBAR STYLING
   ========================================== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* Selection */
::selection {
    background: var(--primary);
    color: white;
}

::-moz-selection {
    background: var(--primary);
    color: white;
}