/* =================================================================
   FMC Blockchain - Base Styles + 12 Themes
   PHP 5.2.8 kompatibel | CSS Variables für Theme-Switching
   ================================================================= */

/* === BASE THEME (Default: Light) - CSS Variables === */
:root {
    --bg: #f4f6f8; --bg2: #ffffff; --gold: #d4af37; --txt: #1a1a1a;
    --err: #dc2626; --ok: #059669; --blue: #2563eb;
    --border: #d1d5db; --shadow: 0 3px 15px rgba(0,0,0,0.08);
}

/* === DARK THEME === */
[data-theme="dark"] {
    --bg: #0f172a; --bg2: #1e293b; --gold: #fbbf24; --txt: #f1f5f9;
    --err: #ef4444; --ok: #10b981; --blue: #3b82f6;
    --border: #334155; --shadow: 0 3px 15px rgba(0,0,0,0.3);
}

/* === CONTRAST THEME === */
[data-theme="contrast"] {
    --bg: #000000; --bg2: #000000; --gold: #ffff00; --txt: #ffffff;
    --err: #ff3333; --ok: #00ff00; --blue: #00ffff;
    --border: #ffffff; --shadow: none;
}

/* === LUXURY THEME === */
[data-theme="luxury"] {
    --bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    --bg2: rgba(30, 30, 50, 0.95); --gold: #ffd700; --txt: #e0e0ff;
    --err: #ff6b6b; --ok: #69db7c; --blue: #74c0fc;
    --border: rgba(100, 100, 180, 0.5); --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

/* === CYBERPUNK THEME === */
[data-theme="cyberpunk"] {
    --bg: #0a0a0f; --bg2: #111827; --gold: #fbbf24; --txt: #e5e7eb;
    --err: #f43f5e; --ok: #14b8a6; --blue: #8b5cf6;
    --border: #374151; --shadow: 0 0 20px rgba(139,92,246,0.3);
}

/* === NATURE THEME === */
[data-theme="nature"] {
    --bg: #f0fdf4; --bg2: #ffffff; --gold: #ca8a04; --txt: #166534;
    --err: #dc2626; --ok: #16a34a; --blue: #15803d;
    --border: #86efac; --shadow: 0 3px 15px rgba(22,163,74,0.15);
}

/* === OCEAN THEME === */
[data-theme="ocean"] {
    --bg: #f0f9ff; --bg2: #ffffff; --gold: #b45309; --txt: #0c4a6e;
    --err: #dc2626; --ok: #0d9488; --blue: #0284c7;
    --border: #7dd3fc; --shadow: 0 3px 15px rgba(2,132,199,0.15);
}

/* === SUNSET THEME === */
[data-theme="sunset"] {
    --bg: #fff7ed; --bg2: #ffffff; --gold: #ea580c; --txt: #7c2d12;
    --err: #dc2626; --ok: #059669; --blue: #c2410c;
    --border: #fdba74; --shadow: 0 3px 15px rgba(234,88,12,0.15);
}

/* === MIDNIGHT THEME === */
[data-theme="midnight"] {
    --bg: #0f0f1a; --bg2: #1a1a2e; --gold: #fcd34d; --txt: #e2e8f0;
    --err: #f43f5e; --ok: #14b8a6; --blue: #6366f1;
    --border: #334155; --shadow: 0 4px 20px rgba(99,102,241,0.25);
}

/* === TERMINAL THEME === */
[data-theme="terminal"] {
    --bg: #000000; --bg2: #000000; --gold: #ffff00; --txt: #00ff00;
    --err: #ff3333; --ok: #00ff00; --blue: #00ffff;
    --border: #00ff00; --shadow: 0 0 10px #00ff00;
}

/* === PASTEL THEME === */
[data-theme="pastel"] {
    --bg: #fef3c7; --bg2: #fffbeb; --gold: #d97706; --txt: #78350f;
    --err: #dc2626; --ok: #059669; --blue: #f59e0b;
    --border: #fcd34d; --shadow: 0 3px 15px rgba(245,158,11,0.15);
}

/* === MONOCHROME THEME === */
[data-theme="monochrome"] {
    --bg: #ffffff; --bg2: #ffffff; --gold: #333333; --txt: #111111;
    --err: #cc0000; --ok: #444444; --blue: #333333;
    --border: #cccccc; --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* === BASE STYLES (User's Code - Integrated) === */
body {
    background: var(--bg);
    color: var(--txt);
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    transition: background 0.3s, color 0.3s;
}

a {
    color: var(--gold);
    text-decoration: none;
}

nav {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .c {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--gold);
}

nav .links {
    display: flex;
    gap: 20px;
    align-items: center;
}

nav .links a {
    font-size: 0.9rem;
    color: var(--txt);
    opacity: 0.8;
}

nav .links a:hover,
nav .links a.act {
    color: var(--gold);
    opacity: 1;
}

nav .btn {
    background: var(--gold);
    color: #000;
    padding: 6px 14px;
    border-radius: 4px;
    font-weight: 600;
}

.wrap {
    max-width: 1300px;
    margin: 0 auto;
    padding: 30px 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.card {
    background: var(--bg2);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.card h3 {
    color: var(--gold);
    margin: 0 0 10px 0;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--txt);
    border-radius: 6px;
    margin: 8px 0;
    box-sizing: border-box;
}

button {
    background: var(--gold);
    color: #000;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 6px;
    font-weight: 600;
}

button:hover {
    opacity: 0.9;
}

button.secondary {
    background: var(--border);
    color: var(--txt);
}

button.danger {
    background: var(--err);
    color: #fff;
}

.log-box {
    background: #000;
    border: 1px solid var(--border);
    padding: 12px;
    font-family: monospace;
    font-size: 11px;
    height: 120px;
    overflow-y: auto;
    color: var(--ok);
    margin-top: 10px;
    border-radius: 6px;
}

.log-ln {
    white-space: pre-wrap;
    word-break: break-word;
    margin: 3px 0;
}

.log-ln .fi {
    color: var(--gold);
    font-weight: bold;
    margin-right: 4px;
}

.admin-nav {
    background: var(--bg2);
    padding: 10px 20px;
    margin: -30px -20px 20px -20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.admin-nav a {
    color: var(--txt);
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    opacity: 0.8;
}

.admin-nav a.act,
.admin-nav a:hover {
    color: var(--gold);
    border-color: var(--gold);
    opacity: 1;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate {
    animation: fadeIn 0.5s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

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

/* === RESPONSIVE === */
@media (max-width: 768px) {
    nav .links {
        display: none;
    }
    .grid {
        grid-template-columns: 1fr;
    }
    .wrap {
        padding: 20px 15px;
    }
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-10 { margin-top: 10px; }
.mb-10 { margin-bottom: 10px; }
.hidden { display: none; }