:root {
    --bg-primary: #0A0A0A;
    --bg-secondary: #111111;
    --bg-card: #18181B;
    --text-primary: #F5F5F5;
    --text-muted: #8A8F98;
    --accent: #FF3B30;
    --accent-hover: #D32F2F;
    --success: #22C55E;
    --border: #27272A;
    
    --font-heading: 'IBM Plex Sans', sans-serif;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 30px;
}

h1, h2, h3, h4, .logo {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent);
}

header {
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    background: rgba(10, 10, 10, 0.9);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo::before {
    content: '';
    display: block;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-links {
    display: flex;
    gap: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn {
    display: inline-block;
    padding: 16px 32px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

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

.btn-outline:hover {
    border-color: var(--text-primary);
}

.hero {
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 30px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.4rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 50px;
}

.hero .btn-group {
    display: flex;
    gap: 20px;
    justify-content: center;
}

section {
    padding: 120px 0;
    border-bottom: 1px solid var(--border);
}

.section-label {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 20px;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 60px;
    max-width: 600px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.minimal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 40px;
    position: relative;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.minimal-card:hover {
    transform: translateY(-5px);
    border-color: var(--text-muted);
}

.step-number {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: block;
}

.minimal-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.minimal-card p {
    color: var(--text-muted);
    font-size: 1rem;
}

.check-list {
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.check-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--bg-card);
    border: 1px solid var(--accent);
}

.check-list.success li::before {
    background: var(--success);
    border-color: var(--success);
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    border-color: var(--accent);
    position: relative;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    padding: 4px 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.price {
    font-size: 3.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 30px;
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
}

.input-error { border-color: #ef4444 !important; background: rgba(239, 68, 68, 0.05) !important; }

.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 280px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 40px 30px;
}

.admin-main {
    flex: 1;
    padding: 60px;
    background: var(--bg-primary);
}

.admin-nav {
    list-style: none;
    margin-top: 60px;
}

.admin-nav li {
    margin-bottom: 10px;
}

.admin-nav a {
    display: block;
    padding: 12px 15px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.admin-nav a.active, .admin-nav a:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 2px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.status-paid {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-draft {
    background: rgba(138, 143, 152, 0.1);
    color: var(--text-muted);
    border: 1px solid var(--text-muted);
}

footer {
    padding: 60px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hidden { display: none !important; }

@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 3rem; }
    .nav-links { display: none; }
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
}