/* ===== BASE ===== */
:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #a5b4fc;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-text: #1e293b;
    --color-muted: #94a3b8;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --radius: 12px;
}

html {
    font-size: 15px;
    position: relative;
    min-height: 100%;
}
@media (min-width: 768px) {
    html { font-size: 16px; }
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    margin-bottom: 80px;
}

/* ===== NAVBAR ===== */
.navbar-custom {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: var(--shadow-md);
    padding: .75rem 0;
}
.navbar-custom .navbar-brand {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -.5px;
}
.navbar-custom .nav-link {
    color: rgba(255,255,255,.85) !important;
    font-weight: 500;
    transition: color .2s;
}
.navbar-custom .nav-link:hover {
    color: #fff !important;
}
.navbar-custom .nav-link.active-link {
    color: #fff !important;
    border-bottom: 2px solid var(--color-accent);
}
.navbar-member-badge {
    background: rgba(255,255,255,.18);
    border-radius: 20px;
    padding: 4px 14px;
    font-size: .85rem;
    color: #fff;
}

/* ===== HERO ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary), #818cf8);
    color: white;
    padding: 2.5rem 0 2rem;
    margin-bottom: 2rem;
    text-align: center;
}
.hero h1 {
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: .4rem;
}
.hero p {
    font-size: 1.1rem;
    opacity: .9;
}

/* ===== CARDS ===== */
.card-treatment {
    background: var(--color-card);
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: transform .2s, box-shadow .2s;
    overflow: hidden;
}
.card-treatment:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}
.card-treatment .card-date {
    background: var(--color-primary);
    color: white;
    text-align: center;
    padding: .75rem .5rem;
    min-width: 75px;
    border-radius: var(--radius) 0 0 var(--radius);
}
.card-treatment .card-date .day {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}
.card-treatment .card-date .month {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: .9;
}
.card-treatment .card-body {
    padding: 1rem 1.25rem;
}
.card-treatment .card-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: .5rem;
}
.card-treatment .card-info {
    font-size: .9rem;
    color: var(--color-muted);
}
.card-treatment .card-info span {
    margin-right: 1rem;
}

/* ===== BADGES ===== */
.badge-companion {
    background: var(--color-success) !important;
    font-size: .8rem;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 20px;
}
.badge-empty {
    background: #e2e8f0;
    color: var(--color-muted);
    font-size: .8rem;
    padding: 5px 10px;
    border-radius: 20px;
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    border-radius: 8px;
    font-weight: 500;
    padding: .5rem 1.25rem;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}
.btn-success {
    background: var(--color-success);
    border-color: var(--color-success);
    border-radius: 8px;
    font-weight: 500;
}
.btn-accent {
    background: var(--color-accent);
    border: none;
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    padding: .6rem 1.5rem;
}
.btn-accent:hover {
    background: #d97706;
    color: #fff;
}
.btn-outline-danger {
    border-radius: 8px;
}

/* ===== DETAIL PAGE ===== */
.detail-header {
    background: linear-gradient(135deg, var(--color-primary), #818cf8);
    color: white;
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 1.5rem 2rem;
}
.detail-header h2 {
    font-weight: 700;
    margin: 0;
}
.detail-body {
    background: var(--color-card);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow-md);
    padding: 1.5rem 2rem;
}
.detail-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}
.detail-info-item label {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--color-muted);
    font-weight: 600;
    margin-bottom: .15rem;
}
.detail-info-item p {
    font-size: 1.05rem;
    font-weight: 500;
    margin-bottom: 0;
}

/* ===== COMPANION SECTION ===== */
.companion-section {
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem 2rem;
    margin-top: 1.5rem;
}
.companion-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}
.companion-list {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}
.companion-avatar {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: #ecfdf5;
    color: #065f46;
    border-radius: 20px;
    padding: 6px 14px;
    font-weight: 500;
    font-size: .9rem;
}
.companion-avatar::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
}

/* ===== SIGNUP INLINE ===== */
.signup-box {
    background: #fefce8;
    border: 2px dashed var(--color-accent);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-top: 1rem;
}

/* ===== ADMIN TABLE ===== */
.table-admin {
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.table-admin th {
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: .85rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    border: none;
    padding: .85rem 1rem;
}
.table-admin td {
    padding: .85rem 1rem;
    vertical-align: middle;
}
.table-admin tbody tr {
    transition: background .15s;
}
.table-admin tbody tr:hover {
    background: #f1f5f9;
}

/* ===== FORMS ===== */
.form-control {
    border-radius: 8px;
    border: 2px solid #e2e8f0;
    padding: .6rem .9rem;
}
.form-control:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
.form-label {
    font-weight: 600;
    font-size: .9rem;
    color: #475569;
}

/* ===== ALERTS ===== */
.alert {
    border-radius: var(--radius);
    border: none;
    font-weight: 500;
}
.alert-success {
    background: #ecfdf5;
    color: #065f46;
}
.alert-danger, .alert-error {
    background: #fef2f2;
    color: #991b1b;
}

/* ===== FOOTER ===== */
.footer-custom {
    background: #1e293b;
    color: #94a3b8;
    padding: 1.5rem 0;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-muted);
}
.empty-state .icon {
    font-size: 3rem;
    margin-bottom: .5rem;
}

/* ===== MISC ===== */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1.5rem;
}
.page-title {
    font-weight: 700;
    margin-bottom: 1.5rem;
}