/* ============================================
   LiteQuant - Global Design System (Silicon Valley theme)
   ============================================ */

:root {
    --primary: #1494d3;
    --primary-dark: #0f77ac;
    --primary-light: rgba(20, 148, 211, 0.16);
    --primary-soft: rgba(20, 148, 211, 0.08);
    --secondary: #1c2475;
    --secondary-soft: rgba(28, 36, 117, 0.12);

    --success: #0ea76b;
    --success-light: rgba(14, 167, 107, 0.12);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.14);
    --danger: #c9363d;
    --danger-light: rgba(229, 72, 77, 0.12);

    --gray-50: #f5f8fc;
    --gray-100: #edf2f8;
    --gray-200: #d8e2ef;
    --gray-300: #c0cedf;
    --gray-400: #8c9bb0;
    --gray-500: #657589;
    --gray-600: #49586a;
    --gray-700: #334152;
    --gray-800: #202b3a;
    --gray-900: #111827;

    --bg-body: #f4f8fd;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-solid: #ffffff;
    --text-primary: #182131;
    --text-secondary: #405066;
    --text-muted: #68788f;

    --border: rgba(125, 148, 176, 0.3);
    --border-hover: rgba(20, 148, 211, 0.4);

    --shadow-sm: 0 2px 8px rgba(17, 24, 39, 0.05);
    --shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
    --shadow-md: 0 14px 36px rgba(17, 24, 39, 0.1);
    --shadow-lg: 0 24px 52px rgba(17, 24, 39, 0.14);
    --shadow-xl: 0 36px 80px rgba(17, 24, 39, 0.18);

    --radius: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    --font-family: 'Noto Sans SC Variable', 'Inter Variable', sans-serif;
    --font-latin: 'Inter Variable', 'Noto Sans SC Variable', sans-serif;
    --font-mono: 'JetBrains Mono Variable', monospace;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-secondary);
    background:
        radial-gradient(circle at 10% -20%, rgba(20, 148, 211, 0.28) 0%, rgba(20, 148, 211, 0) 38%),
        radial-gradient(circle at 90% 0%, rgba(28, 36, 117, 0.16) 0%, rgba(28, 36, 117, 0) 35%),
        linear-gradient(160deg, #f8fbff 0%, #f4f8fd 55%, #edf3fa 100%);
    min-height: 100vh;
}

::selection { background: var(--primary-light); color: var(--secondary); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 0.96rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    border: none;
}

.btn:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--primary-light); }

.btn-primary {
    background: linear-gradient(120deg, var(--primary) 0%, #2aa8e3 40%, var(--secondary) 100%);
    color: #fff;
    box-shadow: 0 10px 26px rgba(20, 148, 211, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(20, 148, 211, 0.42); }

.btn-outline {
    background: rgba(255, 255, 255, 0.65);
    color: var(--secondary);
    border: 1px solid var(--border-hover);
}

.btn-outline:hover { background: rgba(255, 255, 255, 0.95); transform: translateY(-2px); }

.btn-secondary { background: var(--gray-100); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: #e8eef6; }
.btn-danger {
    color: #fff;
    background: linear-gradient(135deg, #ef5c63, var(--danger));
    box-shadow: 0 10px 24px rgba(201, 54, 61, 0.24);
}
.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(201, 54, 61, 0.32);
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none !important; }

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    backdrop-filter: blur(16px);
    transition: all 0.3s ease;
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--border-hover); }

.form-group { margin-bottom: 24px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: all 0.2s;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
}

.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-light); }
.form-control::placeholder { color: var(--gray-400); }

.badge { display: inline-block; padding: 5px 12px; border-radius: 999px; font-size: 0.74rem; font-weight: 700; }
.badge-primary { background: var(--secondary); color: #fff; }
.badge-success { background: var(--success); color: #fff; }
.badge-warning { background: var(--warning); color: #fff; }
.badge-danger { background: #b92f38; color: #fff; }
.badge-soft { background: var(--primary-soft); color: var(--secondary); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #b2c4da; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #98afc9; }

@media (max-width: 768px) {
    .container { padding: 0 16px; }
}