/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-card-hover: #161616;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.55);
    --text-tertiary: rgba(255, 255, 255, 0.35);
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --glow-purple: rgba(118, 75, 162, 0.15);
    --glow-blue: rgba(102, 126, 234, 0.15);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== PARTICLES CANVAS ===== */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== GLOW ORBS ===== */
.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

.glow-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.3) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float-orb-1 15s ease-in-out infinite;
}

.glow-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.2) 0%, transparent 70%);
    bottom: -100px;
    left: -150px;
    animation: float-orb-2 18s ease-in-out infinite;
}

.glow-orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float-orb-3 20s ease-in-out infinite;
}

@keyframes float-orb-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-80px, 60px) scale(1.1); }
    66% { transform: translate(40px, -40px) scale(0.9); }
}

@keyframes float-orb-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(60px, -80px) scale(1.15); }
    66% { transform: translate(-50px, 30px) scale(0.85); }
}

@keyframes float-orb-3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0.2; }
}

/* ===== CONTAINER ===== */
.container {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== HERO SECTION ===== */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 60px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #667eea;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.6); }
    50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(102, 126, 234, 0); }
}

.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
    opacity: 0.5;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 48px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.scroll-indicator {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1s;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--text-tertiary);
    border-bottom: 2px solid var(--text-tertiary);
    transform: rotate(45deg);
    animation: bounce-arrow 2s ease-in-out infinite;
}

@keyframes bounce-arrow {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.5; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 1; }
}

/* ===== DONATE SECTION ===== */
.donate-section {
    padding: 40px 0 120px;
}

.section-title {
    text-align: center;
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.donate-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== DONATE CARD ===== */
.donate-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    transition: all var(--transition-medium);
}

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

.donate-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-8px) !important;
    box-shadow: 0 20px 60px -15px rgba(0, 0, 0, 0.5),
                0 0 40px -10px var(--card-accent, rgba(102, 126, 234, 0.15));
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: radial-gradient(ellipse at 50% 0%, var(--card-accent, rgba(102, 126, 234, 0.1)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-medium);
    pointer-events: none;
}

.donate-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.card-icon-wrapper {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    margin-bottom: 8px;
    transition: all var(--transition-medium);
    overflow: hidden;
}

.donate-card:hover .card-icon-wrapper {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
    transform: scale(1.05);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
    transition: transform var(--transition-medium);
}

.donate-card:hover .card-icon {
    transform: scale(1.1);
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 10px 20px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.donate-card:hover .card-action {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.card-action svg {
    transition: transform var(--transition-fast);
}

.donate-card:hover .card-action svg {
    transform: translateX(4px);
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    padding: 24px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 520px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-medium);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: rotate(90deg);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.modal-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.modal-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.crypto-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all var(--transition-fast);
}

.crypto-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-hover);
}

.crypto-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.crypto-badge {
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.crypto-badge.btc {
    background: rgba(247, 147, 26, 0.15);
    color: #F7931A;
}

.crypto-badge.eth {
    background: rgba(98, 126, 234, 0.15);
    color: #627EEA;
}

.crypto-badge.usdt {
    background: rgba(38, 161, 123, 0.15);
    color: #26A17B;
}

.crypto-address {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}

.crypto-address code {
    flex: 1;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    word-break: break-all;
    line-height: 1.5;
}

.copy-btn {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.copy-btn.copied {
    background: rgba(0, 212, 170, 0.15);
    border-color: rgba(0, 212, 170, 0.3);
    color: #00D4AA;
}

/* ===== FOOTER ===== */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 32px 24px;
    color: var(--text-tertiary);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

.heart {
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    15% { transform: scale(1.15); }
    30% { transform: scale(1); }
    45% { transform: scale(1.1); }
}

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

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    z-index: 2000;
    opacity: 0;
    transition: all var(--transition-medium);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .donate-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 40px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .donate-card {
        padding: 32px 24px;
    }

    .modal {
        padding: 28px;
        border-radius: var(--radius-lg);
    }

    .modal-title {
        font-size: 20px;
    }

    .crypto-address code {
        font-size: 11px;
    }
}

/* ===== SELECTION ===== */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: white;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}