/* site/css/app.css — Posthum.ai SPA base styles */

:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f3460;
    --color-highlight: #e94560;
    --color-text: #eaeaea;
    --color-muted: #9a9aaa;
    --color-bg: #0d0d1a;
    --color-card: #1e1e35;
    --border-radius: 8px;
    --transition: 0.2s ease;
    --font-body: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    text-decoration: underline;
}

/* ── Layout ── */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem 1rem;
    width: 100%;
}

.page-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── Card ── */
.card {
    background: var(--color-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.card h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    color: var(--color-text);
}

.card .subtitle {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* ── Form ── */
.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-bottom: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: 0.65rem 0.9rem;
    background: var(--color-secondary);
    border: 1px solid var(--color-accent);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: 0.95rem;
    transition: border-color var(--transition);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-highlight);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition);
    width: 100%;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

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

.btn-secondary {
    background: var(--color-accent);
    color: var(--color-text);
}

/* ── Alerts ── */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid var(--color-highlight);
    color: #ff6b86;
}

.alert-success {
    background: rgba(39, 174, 96, 0.15);
    border: 1px solid #27ae60;
    color: #2ecc71;
}

.alert-info {
    background: rgba(52, 152, 219, 0.15);
    border: 1px solid #3498db;
    color: #5dade2;
}

.alert.hidden {
    display: none;
}

/* ── Nav ── */
nav {
    background: var(--color-secondary);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-accent);
}

nav .brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.05em;
}

nav .brand span {
    color: var(--color-highlight);
}

nav .nav-links a {
    margin-left: 1.25rem;
    font-size: 0.9rem;
    color: var(--color-muted);
}

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

/* ── Table ── */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th,
td {
    padding: 0.65rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-accent);
}

th {
    color: var(--color-muted);
    font-weight: 600;
}

tr:last-child td {
    border-bottom: none;
}

/* ── Utility ── */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.text-muted {
    color: var(--color-muted);
    font-size: 0.85rem;
}

/* ── Spinner ── */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 0.4rem;
}

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