/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f5f5f7;
    --surface: #ffffff;
    --text: #1d1d1f;
    --text-secondary: #6e6e73;
    --primary: #0071e3;
    --primary-hover: #0077ed;
    --danger: #e34040;
    --danger-hover: #cc3333;
    --success: #28a745;
    --border: #d2d2d7;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* === Login Page === */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container { width: 100%; max-width: 400px; padding: 20px; }

.login-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    text-align: center;
}

.login-icon { font-size: 48px; margin-bottom: 8px; }
.login-card h1 { font-size: 28px; font-weight: 700; margin-bottom: 4px; }
.login-subtitle { color: var(--text-secondary); margin-bottom: 24px; font-size: 15px; }

/* === Topbar === */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.topbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.badge {
    font-size: 11px;
    font-weight: 600;
    background: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: 20px;
    vertical-align: middle;
    margin-left: 6px;
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a, .reader-greeting {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 8px;
    transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { background: var(--bg); color: var(--text); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-logout { color: var(--danger) !important; }
.reader-greeting { font-weight: 500; color: var(--text) !important; }

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
    padding: 4px;
}

/* === Container === */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.page-header h2 { font-size: 24px; }

/* === Cards === */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.entry-card h3 { font-size: 18px; margin-bottom: 4px; }

.entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 4px;
}

.entry-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.entry-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.entry-full h2 { font-size: 28px; margin-bottom: 8px; }
.entry-body { font-size: 16px; line-height: 1.8; margin-top: 16px; }
.entry-body p { margin-bottom: 16px; }

/* === Status Badge === */
.status-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}
.status-badge.visible { background: #d4edda; color: #155724; }
.status-badge.hidden { background: #f8d7da; color: #721c24; }

.viewed-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.viewer-tag {
    font-size: 12px;
    background: #e8e8ed;
    color: var(--text-secondary);
    padding: 2px 10px;
    border-radius: 12px;
}

.viewed-notice {
    text-align: center;
    padding: 16px;
    color: var(--text-secondary);
    font-size: 14px;
    font-style: italic;
}

.back-link {
    display: inline-block;
    font-size: 14px;
    color: var(--primary);
    text-decoration: none;
    margin-bottom: 16px;
}
.back-link:hover { text-decoration: underline; }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
    line-height: 1.4;
}
.btn:hover { background: var(--bg); }

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

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

.btn-outline { border-style: dashed; }

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-full { width: 100%; }

/* === Forms === */
.form-card { max-width: 700px; }

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-family: inherit;
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 12px; margin-top: 8px; }

/* === Tables === */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 12px;
    border-bottom: 2px solid var(--border);
}
.data-table td {
    padding: 12px;
    border-bottom: 1px solid #f0f0f2;
    font-size: 14px;
}
.data-table code {
    background: var(--bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 13px;
}

/* === Alerts === */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}
.alert-success { background: #d4edda; color: #155724; }
.alert-error { background: #f8d7da; color: #721c24; }

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}
.empty-state p { font-size: 16px; margin-bottom: 16px; }

/* === Mobile === */
@media (max-width: 640px) {
    .hamburger { display: block; }

    .nav-links {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 8px 0;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }
    .nav-links.open { display: flex; }
    .nav-links a, .reader-greeting { padding: 12px 20px; }

    .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
    .form-row { grid-template-columns: 1fr; }

    .entry-header { flex-direction: column; align-items: flex-start; }
    .entry-actions { flex-direction: column; }
    .entry-actions .btn { width: 100%; }

    .data-table th, .data-table td { padding: 8px 6px; font-size: 13px; }

    .login-card { padding: 32px 20px; }
    .container { padding: 16px 12px 40px; }
}