@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+KR:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Colors */
    --primary: #00ff88;
    --primary-dark: #00cc6a;
    --primary-light: #4dffaa;
    --secondary: #0088ff;
    --accent: #ff6b35;
    --success: #00c851;
    --warning: #ffbb33;
    --error: #ff4444;
    
    /* Background */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: rgba(17, 17, 17, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.02);
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --text-accent: var(--primary);
    
    /* Borders */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --border-accent: rgba(0, 255, 136, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(0, 255, 136, 0.3);
    --shadow-glow-accent: 0 0 60px rgba(255, 107, 53, 0.4);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Nanum Square', 'Inter', 'Noto Sans KR', sans-serif;
    font-weight: 800;
    line-height: 1.2;
}

/* Background Effects */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    animation: grid-float 30s linear infinite;
}

@keyframes grid-float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0.1;
    animation: float-shape 20s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 70%;
    right: 10%;
    animation-delay: -7s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 70%;
    animation-delay: -14s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 40%;
    right: 30%;
    animation-delay: -10s;
}

@keyframes float-shape {
    0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
    25% { transform: translateY(-40px) rotate(90deg) scale(1.1); }
    50% { transform: translateY(-20px) rotate(180deg) scale(0.9); }
    75% { transform: translateY(-60px) rotate(270deg) scale(1.05); }
}

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

@keyframes particle-float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

/* Navigation - Index와 동일하게 맞춤 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3px;
    position: relative;
    overflow: hidden;
}

.icon-inner {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    position: relative;
    z-index: 2;
}

.brand-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    animation: brand-pulse 3s ease-in-out infinite;
}

@keyframes brand-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.brand-text {
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Nanum Square', sans-serif;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.nav-link:hover::before,
.nav-link.active::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--bg-glass);
    border-color: var(--border-accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.server-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    font-size: 0.875rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.status-dot {
    font-size: 8px;
    color: var(--error);
    animation: pulse-dot 2s ease-in-out infinite;
    transition: var(--transition-normal);
}

.status-dot.online {
    color: var(--success);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.player-count {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.refresh-btn {
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.refresh-btn:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-color: var(--border-accent);
    transform: rotate(180deg);
}

.refresh-btn.loading {
    animation: spin 1s linear infinite;
}

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

.cta-button {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-normal);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(0, 255, 136, 0.5);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* Main Container */
.main-container {
    padding-top: 80px;
    min-height: 100vh;
}

/* Hero Section */
.hero {
    padding: var(--space-2xl) 0;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    animation: hero-fade-in 1s ease-out;
}

@keyframes hero-fade-in {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    backdrop-filter: blur(10px);
    animation: badge-glow 3s ease-in-out infinite;
}

@keyframes badge-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 255, 136, 0.2); }
    50% { box-shadow: 0 0 40px rgba(0, 255, 136, 0.4); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
    color: var(--text-secondary);
}

.title-highlight {
    display: block;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(0, 255, 136, 0.3);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-primary);
}

/* Donation Section */
.donation-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
    position: relative;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.donation-wrapper {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-2xl);
    align-items: start;
}

/* Form Container */
.donation-form-container {
    background: var(--bg-card);
    backdrop-filter: blur(30px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    animation: form-slide-in 1s ease-out 0.3s both;
}

@keyframes form-slide-in {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}

.donation-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.05), transparent);
    transition: var(--transition-slow);
}

.donation-form-container:hover::before {
    left: 100%;
}

.form-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.form-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow-glow);
    animation: icon-float 3s ease-in-out infinite;
}

@keyframes icon-float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-5px) scale(1.05); }
}

.form-title-group h2 {
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.form-title-group p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Form Steps */
.form-step {
    margin-bottom: var(--space-xl);
    opacity: 0.3;
    transform: translateY(20px);
    transition: all var(--transition-slow);
    pointer-events: none;
}

.form-step.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.step-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: white;
    font-size: 0.875rem;
    box-shadow: var(--shadow-glow);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Input Groups */
.input-group {
    margin-bottom: var(--space-lg);
}

.input-container {
    position: relative;
}

.input-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.input-label i {
    color: var(--primary);
}

.input-wrapper {
    position: relative;
    margin-bottom: var(--space-sm);
}

.form-input {
    width: 100%;
    height: 60px;
    padding: 0 var(--space-md);
    background: var(--bg-glass);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0, 255, 136, 0.05);
    box-shadow: 0 0 0 4px rgba(0, 255, 136, 0.1);
    transform: scale(1.02);
}

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

.input-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition-normal);
}

.form-input:focus + .input-decoration {
    width: 100%;
}

.char-counter {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary);
    transition: var(--transition-normal);
}

.form-input:focus ~ .char-counter {
    color: var(--primary);
    border-color: var(--primary);
}

.currency-symbol {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
    pointer-events: none;
}

.amount-input {
    padding-left: 3rem;
}

.input-status {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    opacity: 0;
    transition: var(--transition-normal);
}

.input-status.valid {
    opacity: 1;
}

.input-hint {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.input-hint i {
    color: var(--primary);
}

/* Nickname Status */
.nickname-status {
    margin-top: var(--space-sm);
    width: 100%;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: var(--transition-normal);
    font-size: 0.875rem;
    font-weight: 500;
}

.nickname-status.valid {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
    opacity: 1;
}

.nickname-status.invalid {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
    opacity: 1;
}

.nickname-status.loading {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: var(--primary);
    opacity: 1;
}

.nickname-status i {
    font-size: 1rem;
}

.nickname-status.loading i {
    animation: spin 1s linear infinite;
}

/* Skin Preview */
.skin-preview-container {
    margin-top: var(--space-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.skin-preview-container.show {
    opacity: 1;
    transform: translateY(0);
}

.skin-preview-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.skin-preview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.skin-preview-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.skin-preview-header i {
    color: var(--primary);
    font-size: 1.125rem;
}

.skin-preview-content {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.skin-container {
    position: relative;
}

.skin-viewer {
    width: 200px;
    height: 300px;
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-primary);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.skin-viewer canvas {
    width: 100% !important;
    height: 100% !important;
    border-radius: var(--radius-lg);
}

.skin-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.skin-loading i {
    font-size: 1.5rem;
    color: var(--primary);
}

.skin-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.skin-control-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.skin-control-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.player-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.player-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
    word-break: break-all;
}

.player-uuid {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary);
    word-break: break-all;
}

.verification-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.verification-status.verified {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.verification-status.invalid {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.verification-status.loading {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: var(--primary);
}

.verification-status i {
    font-size: 1rem;
}

/* Payment Methods */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.payment-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-glass);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.payment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.payment-card:hover::before {
    left: 100%;
}

.payment-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.payment-card.selected {
    border-color: var(--primary);
    background: rgba(0, 255, 136, 0.1);
    box-shadow: var(--shadow-glow);
}

.payment-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.payment-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.payment-info h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.payment-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.payment-features {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.feature {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 255, 136, 0.1);
    color: var(--primary);
    border-radius: 12px;
    border: 1px solid rgba(0, 255, 136, 0.2);
    font-weight: 500;
}

.payment-arrow {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition-normal);
}

.payment-card:hover .payment-arrow {
    color: var(--primary);
    transform: translateX(5px);
}

/* Amount Grid */
.amount-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.amount-card {
    background: var(--bg-glass);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.amount-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.amount-card:hover::before {
    left: 100%;
}

.amount-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.amount-card.selected {
    border-color: var(--primary);
    background: rgba(0, 255, 136, 0.1);
    box-shadow: var(--shadow-glow);
}

.amount-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.amount-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.amount-value {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.amount-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.custom-amount {
    margin-top: var(--space-md);
}

/* Terms Section */
.terms-section {
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    display: block;
}

.terms-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.terms-content h4::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--primary);
    border-radius: 2px;
}

.agreement-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.agreement-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}

.agreement-item:hover {
    background: rgba(0, 255, 136, 0.05);
}

.agreement-item.agreement-all {
    border-top: 1px solid var(--border-primary);
    margin-top: var(--space-sm);
    padding-top: var(--space-md);
    font-weight: 600;
}

.agreement-checkbox {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-primary);
    border-radius: 4px;
    position: relative;
    transition: var(--transition-normal);
    flex-shrink: 0;
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -50%) rotate(45deg) scale(0);
    transition: var(--transition-normal);
}

.agreement-checkbox:checked + .checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.agreement-checkbox:checked + .checkmark::after {
    transform: translate(-50%, -50%) rotate(45deg) scale(1);
}

.agreement-text {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.terms-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.terms-link:hover {
    background: rgba(0, 255, 136, 0.1);
}

/* Submit Buttons */
.submit-section {
    margin-top: var(--space-xl);
}

.submit-button {
    width: 100%;
    height: 70px;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    position: relative;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition-normal);
    display: none;
}

.submit-button.show {
    display: block;
}

.button-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.submit-button:hover:not(.disabled):not(:disabled) .button-bg {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.button-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    height: 100%;
    font-weight: 700;
    font-size: 1.125rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.loading-spinner {
    display: none;
}

.submit-button.loading .button-text {
    display: none;
}

.submit-button.loading .loading-spinner {
    display: block;
}

.submit-button.disabled,
.submit-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.submit-button.disabled .button-bg,
.submit-button:disabled .button-bg {
    background: var(--bg-tertiary) !important;
    box-shadow: none !important;
    transform: none !important;
}

.submit-button.disabled .button-content,
.submit-button:disabled .button-content {
    color: var(--text-muted) !important;
}

.submit-button.disabled:hover,
.submit-button:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

.submit-button.disabled .button-bg:hover,
.submit-button:disabled .button-bg:hover {
    transform: none !important;
    box-shadow: none !important;
    background: var(--bg-tertiary) !important;
}

.gift-button .button-bg {
    background: linear-gradient(135deg, var(--accent), #ff8c42);
}

.gift-button:hover:not(.disabled):not(:disabled) .button-bg {
    background: linear-gradient(135deg, #ff8c42, var(--accent));
}

.gift-button {
    margin-bottom: var(--space-sm);
}

.bank-button .button-bg {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.bank-button:hover:not(.disabled):not(:disabled) .button-bg {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.bank-button {
    margin-bottom: 0;
}

.submit-button.loading:not(.disabled) {
    opacity: 1;
    cursor: wait;
    pointer-events: auto;
}

.submit-button.loading .button-bg {
    animation: loading-pulse 1.5s ease-in-out infinite;
}

@keyframes loading-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Info Cards */
.donation-info-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    animation: info-slide-in 1s ease-out 0.5s both;
}

@keyframes info-slide-in {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

.info-card {
    background: var(--bg-card);
    backdrop-filter: blur(30px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition-slow);
}

.info-card:hover::before {
    left: 100%;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-accent);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.card-header i {
    font-size: 1.25rem;
    color: var(--primary);
}

.card-header.warning i {
    color: var(--warning);
    animation: warning-pulse 2s ease-in-out infinite;
}

@keyframes warning-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Progress Card */
.progress-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.progress-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.progress-percent {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.progress-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    margin-bottom: var(--space-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 1s ease-out;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.progress-info {
    text-align: center;
}

.last-updated {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Benefits Card */
.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-secondary);
    transition: var(--transition-normal);
}

.benefit-item:hover {
    border-color: var(--border-accent);
    background: rgba(0, 255, 136, 0.05);
    transform: translateX(5px);
}

.benefit-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    flex-shrink: 0;
}

.benefit-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.benefit-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.benefit-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Notice Card */
.notice-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.notice-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.notice-item:hover {
    background: rgba(0, 255, 136, 0.05);
    color: var(--text-primary);
    transform: translateX(3px);
}

.notice-item i {
    color: var(--primary);
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* Support Card */
.support-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.support-button {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.support-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.support-button:hover::before {
    left: 100%;
}

.support-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.support-button.discord:hover {
    border-color: #5865f2;
    color: #5865f2;
}

.support-button.email:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.support-button i {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.support-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.support-title {
    font-weight: 600;
    color: inherit;
}

.support-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Notifications - Index와 동일하게 통합 */
#notification-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.notification {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: 0 8px 32px rgba(0, 255, 136, 0.3);
    animation: slideIn 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    max-width: 300px;
    word-wrap: break-word;
}

.notification.slide-out {
    animation: slideOut 0.3s ease-in forwards;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes ripple-expand {
    0% { width: 0; height: 0; opacity: 1; }
    100% { width: 100px; height: 100px; opacity: 0; }
}

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

/* Step validation indicators */
.form-step:not(.active) {
    pointer-events: none;
    opacity: 0.3;
}

.form-step.active {
    pointer-events: auto;
    opacity: 1;
}

/* Input validation feedback */
.form-input.invalid {
    border-color: var(--error) !important;
    background: rgba(255, 68, 68, 0.05) !important;
}

.form-input.valid {
    border-color: var(--success) !important;
    background: rgba(16, 185, 129, 0.05) !important;
}

/* Payment method selection feedback */
.payment-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.amount-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Enhanced focus states */
.keyboard-navigation .form-input:focus,
.keyboard-navigation .payment-card:focus,
.keyboard-navigation .amount-card:focus,
.keyboard-navigation .submit-button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.submit-button:focus-visible:not(.disabled) {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.submit-button.disabled:focus {
    outline: none;
}

.keyboard-navigation .submit-button:focus:not(.disabled) {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .donation-wrapper {
        grid-template-columns: 1fr 350px;
        gap: var(--space-xl);
    }
}

@media (max-width: 1024px) {
    .donation-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .donation-info-container {
        order: -1;
    }
    
    .hero-stats {
        gap: var(--space-md);
    }
    
    .stat-divider {
        display: none;
    }

    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .nav-actions .server-info {
        display: none;
    }
    
    .nav-actions .refresh-btn {
        display: none;
    }
    
    .hero {
        padding: var(--space-xl) 0;
    }
    
    .hero-content {
        padding: 0 var(--space-md);
    }
    
    .section-container {
        padding: 0 var(--space-md);
    }
    
    .donation-form-container {
        padding: var(--space-xl);
    }
    
    .amount-grid {
        grid-template-columns: 1fr;
    }
    
    .skin-preview-content {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        text-align: center;
    }
    
    .skin-viewer {
        margin: 0 auto;
    }
    
    .player-info {
        align-items: center;
    }
    
    .player-uuid {
        text-align: center;
        word-break: break-all;
    }
    
    .payment-card {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .payment-arrow {
        transform: rotate(90deg);
    }
    
    .payment-card:hover .payment-arrow {
        transform: rotate(90deg) translateY(-5px);
    }
    
    .terms-section {
        padding: var(--space-md);
    }
    
    .agreement-item {
        padding: var(--space-xs);
    }
    
    .progress-percent {
        font-size: 2rem;
    }
    
    .submit-button {
        height: 60px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--space-sm);
    }
    
    .hero-content {
        padding: 0 var(--space-sm);
    }
    
    .section-container {
        padding: 0 var(--space-sm);
    }
    
    .donation-form-container {
        padding: var(--space-lg);
    }
    
    .form-header {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }
    
    .step-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .skin-viewer {
        width: 150px;
        height: 225px;
    }
    
    .skin-preview-card {
        padding: var(--space-md);
    }
    
    .player-name {
        font-size: 1.25rem;
    }
    
    .payment-methods {
        gap: var(--space-sm);
    }
    
    .payment-card {
        padding: var(--space-sm);
    }
    
    .payment-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .payment-info h4 {
        font-size: 1.125rem;
    }
    
    .payment-features {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .submit-button {
        height: 56px;
        font-size: 0.9rem;
    }
    
    .button-content {
        font-size: 0.9rem;
        gap: var(--space-xs);
    }

    .notification {
        margin-right: var(--space-sm);
        max-width: calc(100vw - var(--space-lg));
    }
}

/* Mobile Menu Styles - Index와 동일하게 */
@media (max-width: 1024px) {
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.95);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--border-primary);
        padding: var(--space-lg);
        gap: var(--space-md);
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .amount-card:hover,
    .info-card:hover,
    .nav-link:hover,
    .payment-card:hover {
        transform: none;
    }
    
    .submit-button:hover .button-bg {
        transform: none !important;
        box-shadow: none !important;
    }
    
    .submit-button:not(.disabled):active .button-bg {
        transform: scale(0.98);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .brand-logo,
    .footer-logo img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-primary: rgba(255, 255, 255, 0.3);
        --border-secondary: rgba(255, 255, 255, 0.2);
        --text-secondary: #cccccc;
        --text-muted: #999999;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .grid-overlay,
    .floating-shapes,
    .particles {
        animation: none !important;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .floating-shapes,
    .background {
        display: none;
    }
    
    .main-container {
        padding-top: 0;
    }
    
    * {
        color: black !important;
        background: white !important;
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

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

/* Selection */
::selection {
    background: rgba(0, 255, 136, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(0, 255, 136, 0.3);
    color: var(--text-primary);
}

/* Focus States */
button:focus,
a:focus,
.nav-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}