:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #ff6b00; /* Vibrant Orange for basketball theme */
    --accent-hover: #ff8533;
    --border-color: #2a2a2a;
    --success-color: #28a745;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    border: none;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 107, 0, 0.3);
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--glass-bg);
}

.btn-nav {
    padding: 8px 20px;
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 20px;
}

.btn-nav:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text-wrapper {
    max-width: 600px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 107, 0, 0.1);
    border: 1px solid rgba(255, 107, 0, 0.2);
    color: var(--accent-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 107, 0, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 107, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 107, 0, 0); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title span {
    color: var(--accent-color);
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    border-radius: 12px;
}

/* Glass Mockup */
.mockup {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.mockup:hover {
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
}

.mockup-header {
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 20px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--glass-border);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f56;
}

.dot:nth-child(2) { background: #ffbd2e; }
.dot:nth-child(3) { background: #27c93f; }

.mockup-body {
    padding: 30px;
}

.team {text-align: center;}
.score { font-size: 3rem; font-weight: 800; color: var(--accent-color); font-variant-numeric: tabular-nums;}
.score-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    background: rgba(0,0,0,0.5);
    padding: 20px;
    border-radius: 16px;
}

.vs {
    font-weight: 700;
    color: var(--text-secondary);
}

.stat-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 30px;
}

.stat-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 16px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.stat-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.mockup-alert {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.2);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    color: #4ade80;
    font-size: 0.9rem;
}

.gradient-glow {
    position: absolute;
    top: 50%;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 0, 0.15) 0%, rgba(0,0,0,0) 70%);
    transform: translateY(-50%);
    z-index: 1;
    pointer-events: none;
}

/* Sections */
.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.5px;
}

.left-align { text-align: left; margin-bottom: 20px;}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* Problems Grid */
.problems {
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.problem-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 107, 0, 0.3);
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.problem-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.time-wasted {
    font-weight: 600;
    color: #ff5f56;
    background: rgba(255, 95, 86, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    display: inline-block;
    font-size: 0.85rem;
}

/* Flex Wrapper */
.flex-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

/* Feature List */
.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.check-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 107, 0, 0.1);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.feature-list strong {
    font-size: 1.1rem;
    display: block;
    margin-bottom: 6px;
}

.feature-list p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Kakao Mockup */
.kakao-mockup {
    background: #FFEB00;
    border-radius: 24px;
    padding: 24px;
    color: #3A1D1D;
    box-shadow: 0 20px 40px rgba(255, 235, 0, 0.1);
    transform: rotate(3deg);
    transition: transform 0.3s;
}

.kakao-mockup:hover {
    transform: rotate(0);
}

.kakao-header {
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.kakao-bubble {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.bubble-title {
    font-weight: 800;
    font-size: 1.1rem;
    margin-bottom: 16px;
    border-bottom: 1px solid #eee;
    padding-bottom: 12px;
}

.bubble-score { font-weight: 700; margin-bottom: 8px;}
.bubble-stats { color: #555; margin-bottom: 16px;}
.bubble-comment {
    background: rgba(255, 107, 0, 0.05);
    padding: 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 16px;
}

.bubble-btn {
    display: block;
    text-align: center;
    background: #f0f0f0;
    color: #333;
    text-decoration: none;
    padding: 10px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Steps */
.how-it-works {
    background: var(--bg-secondary);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
}

.step-card {
    background: var(--bg-primary);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.step-content h3 { margin-bottom: 16px; font-size: 1.25rem;}
.step-content p { color: var(--text-secondary); font-size: 0.95rem;}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.pricing-card {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.pricing-card.premium {
    background: linear-gradient(180deg, rgba(255, 107, 0, 0.05) 0%, var(--glass-bg) 100%);
    border-color: rgba(255, 107, 0, 0.3);
    position: relative;
}

.pricing-card.premium::before {
    content: '추천';
    position: absolute;
    top: -12px;
    right: 32px;
    background: var(--accent-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 700;
}

.plan-name { font-size: 1.25rem; font-weight: 700; margin-bottom: 16px;}
.plan-price { font-size: 2.5rem; font-weight: 800; margin-bottom: 8px;}
.plan-price span { font-size: 1rem; color: var(--text-secondary); font-weight: 500;}
.plan-desc { color: var(--text-secondary); margin-bottom: 30px; font-size: 0.95rem;}

.plan-features { list-style: none; margin-bottom: 40px; flex-grow: 1;}
.plan-features li {
    margin-bottom: 16px;
    position: relative;
    padding-left: 24px;
    font-size: 0.95rem;
}
.plan-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-color);
}

.plan-btn {
    width: 100%;
}

.roi-banner {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 80px 0 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h2 { color: var(--accent-color); font-size: 1.8rem; margin-bottom: 16px;}
.footer-brand p { color: var(--text-secondary);}

.footer-contact h3 { margin-bottom: 20px;}
.footer-contact p { color: var(--text-secondary); margin-bottom: 10px;}
.kakao-id { font-weight: 700; color: #FFE812;}

.mt-4 { margin-top: 24px;}

.footer-bottom {
    background: var(--bg-primary);
    padding: 24px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-content, .flex-wrapper, .problem-grid, .steps-container {
        grid-template-columns: 1fr;
    }
    .hero-title { font-size: 2.5rem;}
    .hero-visual { display: none;}
    .gradient-glow { display: none;}
}

@media (max-width: 768px) {
    .pricing-grid { grid-template-columns: 1fr;}
    .nav-links { display: none;}
    .footer-content { grid-template-columns: 1fr;}
}