/* ========================================
   Modern SaaS Theme - Doctor Management System
   ======================================== */

/* === Typography === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Modern Color Palette */
    --bg-primary: #F7F8FA;
    --bg-white: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    
    /* Brand Colors */
    --color-primary: #2563EB;
    --color-primary-hover: #1D4ED8;
    --color-success: #16A34A;
    --color-warning: #F59E0B;
    --color-danger: #DC2626;
    --color-info: #0EA5E9;
    
    /* UI Elements */
    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 14px;
    --radius-sm: 8px;
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Layout Structure === */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    overflow-y: auto;
}

.app-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
}

.app-sidebar.collapsed + .app-main {
    margin-left: var(--sidebar-collapsed-width);
}

/* === Top Navbar === */
.app-navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 999;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.navbar-search {
    position: relative;
    width: 400px;
}

.navbar-search input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all 0.2s;
}

.navbar-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.navbar-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar-icon-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    position: relative;
    transition: all 0.2s;
}

.navbar-icon-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.navbar-icon-btn .badge {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    background: var(--color-danger);
    color: white;
    font-size: 10px;
    padding: 0.125rem 0.375rem;
    border-radius: 10px;
}

.navbar-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.navbar-profile:hover {
    background: var(--bg-primary);
}

.navbar-profile-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-info));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 14px;
}

.navbar-profile-info {
    display: flex;
    flex-direction: column;
}

.navbar-profile-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.navbar-profile-role {
    font-size: 12px;
    color: var(--text-secondary);
}

/* === Sidebar === */
.sidebar-header {
    padding: 1.5rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-info));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.sidebar-logo-text {
    font-weight: 700;
    font-size: 1.125rem;
}

.app-sidebar.collapsed .sidebar-logo-text {
    display: none;
}

.sidebar-nav {
    padding: 1.5rem 0;
}

.sidebar-nav-section {
    margin-bottom: 1.5rem;
}

.sidebar-nav-title {
    padding: 0 1.25rem;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.app-sidebar.collapsed .sidebar-nav-title {
    display: none;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    position: relative;
    font-weight: 500;
}

.sidebar-nav-item:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.sidebar-nav-item.active {
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-primary);
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
}

.sidebar-nav-icon {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-nav-text {
    flex: 1;
}

.app-sidebar.collapsed .sidebar-nav-text {
    display: none;
}

.sidebar-nav-badge {
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-weight: 600;
}

.app-sidebar.collapsed .sidebar-nav-badge {
    display: none;
}

/* === Main Content === */
.app-content {
    padding: 2rem;
    max-width: 100%;
}

/* === Cards === */
.card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-white);
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--text-primary);
    border-radius: var(--radius) var(--radius) 0 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: 0 0 var(--radius) var(--radius);
}

/* === KPI Cards === */
.kpi-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

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

.kpi-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.kpi-icon.primary {
    background: linear-gradient(135deg, var(--color-primary), #3B82F6);
}

.kpi-icon.success {
    background: linear-gradient(135deg, var(--color-success), #22C55E);
}

.kpi-icon.warning {
    background: linear-gradient(135deg, var(--color-warning), #FBBF24);
}

.kpi-icon.danger {
    background: linear-gradient(135deg, var(--color-danger), #EF4444);
}

.kpi-content {
    flex: 1;
}

.kpi-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.kpi-change {
    font-size: 12px;
    margin-top: 0.5rem;
}

.kpi-change.positive {
    color: var(--color-success);
}

.kpi-change.negative {
    color: var(--color-danger);
}

/* === Tables === */
.table-responsive {
    border-radius: var(--radius);
    overflow: hidden;
}

.table {
    width: 100%;
    margin-bottom: 0;
    color: var(--text-primary);
}

.table thead th {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.25rem;
    border-bottom: 2px solid var(--border-color);
}

.table tbody td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background: var(--bg-primary);
}

.table-striped tbody tr:nth-of-type(odd) {
    background: rgba(247, 248, 250, 0.5);
}

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge.bg-success, .badge-success {
    background: rgba(22, 163, 74, 0.1) !important;
    color: var(--color-success) !important;
}

.badge.bg-warning, .badge-warning {
    background: rgba(245, 158, 11, 0.1) !important;
    color: var(--color-warning) !important;
}

.badge.bg-danger, .badge-danger {
    background: rgba(220, 38, 38, 0.1) !important;
    color: var(--color-danger) !important;
}

.badge.bg-primary, .badge-primary {
    background: rgba(37, 99, 235, 0.1) !important;
    color: var(--color-primary) !important;
}

.badge.bg-secondary, .badge-secondary {
    background: rgba(100, 116, 139, 0.1) !important;
    color: var(--text-secondary) !important;
}

.badge.bg-info, .badge-info {
    background: rgba(14, 165, 233, 0.1) !important;
    color: var(--color-info) !important;
}

/* Expired badge styling */
.badge-danger.expired-badge {
    animation: pulse-danger 2s infinite;
}

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

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary) !important;
    color: white !important;
    border-color: var(--color-primary) !important;
}

.btn-primary:hover {
    background: var(--color-primary-hover) !important;
    color: white !important;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: var(--color-success) !important;
    color: white !important;
    border-color: var(--color-success) !important;
}

.btn-success:hover {
    background: #15803D !important;
    color: white !important;
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--color-danger) !important;
    color: white !important;
    border-color: var(--color-danger) !important;
}

.btn-danger:hover {
    background: #B91C1C !important;
    color: white !important;
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--color-warning) !important;
    color: white !important;
    border-color: var(--color-warning) !important;
}

.btn-warning:hover {
    background: #D97706 !important;
    color: white !important;
    transform: translateY(-1px);
}

.btn-outline-primary {
    background: transparent !important;
    color: var(--color-primary) !important;
    border: 1px solid var(--color-primary) !important;
}

.btn-outline-primary:hover {
    background: var(--color-primary) !important;
    color: white !important;
}

.btn-outline-secondary {
    background: transparent !important;
    color: var(--text-secondary) !important;
    border: 1px solid var(--border-color) !important;
}

.btn-outline-secondary:hover {
    background: var(--bg-primary) !important;
    border-color: var(--text-secondary) !important;
    color: var(--text-secondary) !important;
}

.btn-outline-success {
    background: transparent !important;
    color: var(--color-success) !important;
    border: 1px solid var(--color-success) !important;
}

.btn-outline-success:hover {
    background: var(--color-success) !important;
    color: white !important;
}

.btn-outline-warning {
    background: transparent !important;
    color: var(--color-warning) !important;
    border: 1px solid var(--color-warning) !important;
}

.btn-outline-warning:hover {
    background: var(--color-warning) !important;
    color: white !important;
}

.btn-outline-danger {
    background: transparent !important;
    color: var(--color-danger) !important;
    border: 1px solid var(--color-danger) !important;
}

.btn-outline-danger:hover {
    background: var(--color-danger) !important;
    color: white !important;
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 13px;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 16px;
}

/* === Forms === */
.form-control, .form-select {
    padding: 0.625rem 1rem;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    width: 100%;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
}

/* === Alerts === */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(22, 163, 74, 0.1);
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.alert-danger, .alert-error {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-danger);
    border-left: 4px solid var(--color-danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background: rgba(14, 165, 233, 0.1);
    color: var(--color-info);
    border-left: 4px solid var(--color-info);
}

/* === Utilities === */
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-success { background-color: var(--color-success) !important; }
.bg-danger { background-color: var(--color-danger) !important; }
.bg-warning { background-color: var(--color-warning) !important; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }

.text-center { text-align: center; }
.text-end { text-align: right; }

/* === Responsive === */
@media (max-width: 768px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    
    .app-sidebar.show {
        transform: translateX(0);
    }
    
    .app-main {
        margin-left: 0;
    }
    
    .app-content {
        padding: 1rem;
    }
    
    .navbar-search {
        display: none;
    }
    
    .kpi-card {
        flex-direction: column;
        text-align: center;
    }
}