/* =============================================
   MedicApp - Common Styles (Light/Dark Theme)
   ============================================= */

/* CSS Variables - Dark Theme (Default) */
:root {
    --color-bg: #0a0e17;
    --color-bg-secondary: #111827;
    --color-card-bg: #1a2035;
    --color-card-hover: #222b45;
    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: rgba(59, 130, 246, 0.12);
    --color-secondary: #10b981;
    --color-secondary-hover: #059669;
    --color-accent: #8b5cf6;
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-warning: #f59e0b;
    --color-border: rgba(148, 163, 184, 0.15);
    --color-border-light: rgba(148, 163, 184, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
    --nav-height: 68px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

/* Light Theme */
.light-mode {
    --color-bg: #f8fafc;
    --color-bg-secondary: #f1f5f9;
    --color-card-bg: #ffffff;
    --color-card-hover: #f8fafc;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: rgba(37, 99, 235, 0.08);
    --color-border: rgba(0, 0, 0, 0.1);
    --color-border-light: rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--color-primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding-top: var(--nav-height);
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* ==================== HEADER ==================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    height: var(--nav-height);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    color: var(--color-primary);
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links li a {
    display: block;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--color-text);
    background: var(--color-primary-light);
}

.nav-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 16px;
    border-left: 1px solid var(--color-border);
}

.user-badge {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.98);
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: var(--shadow-glow);
}

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

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

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

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

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-link {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-icon {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-free, .badge-scheduled {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-primary);
}

.badge-basic, .badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.badge-pro, .badge-completed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-secondary);
}

.badge-cancelled, .badge-abnormal {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text-secondary);
}

.input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.input-group:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.input-group svg {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.input-group input,
.input-group select,
.input-group textarea {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--color-text);
    font-size: 0.9rem;
    font-family: inherit;
    width: 100%;
}

.input-group input::placeholder,
.input-group textarea::placeholder {
    color: var(--color-text-muted);
}

.input-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right center;
    padding-right: 24px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="tel"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    outline: none;
}

textarea {
    resize: vertical;
    min-height: 60px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 16px 0;
    font-size: 0.85rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--color-text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ==================== ALERTS ==================== */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-error {
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.12);
    color: var(--color-secondary);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-info {
    background: rgba(59, 130, 246, 0.12);
    color: var(--color-primary);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.alert svg {
    flex-shrink: 0;
}

/* ==================== MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 28px;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-text);
    background: var(--color-border-light);
}

/* ==================== SECTION CARDS ==================== */
.section-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--color-border-light);
}

.card-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
}

.card-body {
    padding: 20px 24px;
}

/* ==================== PAGE HEADER ==================== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.page-header p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-top: 4px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ==================== QUICK ACTIONS ==================== */
.quick-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

/* ==================== LIST ITEMS ==================== */
.list-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.list-item:last-child {
    border-bottom: none;
}

.item-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.ai-avatar {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-accent);
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-info strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
}

.item-info span,
.item-info small {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.item-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.text-truncate {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ==================== TABLES ==================== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.data-table th {
    text-align: left;
    padding: 12px 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.data-table tr:hover td {
    background: var(--color-border-light);
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-muted);
}

.empty-state svg {
    margin: 0 auto 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.full-width {
    grid-column: 1 / -1;
}

/* ==================== FOOTER ==================== */
.main-footer {
    background: var(--color-card-bg);
    border-top: 1px solid var(--color-border);
    margin-top: 60px;
    padding: 48px 20px 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto 32px;
    padding: 0 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 8px;
}

.footer-logo svg {
    color: var(--color-primary);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-section h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.footer-section ul li a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Theme Toggle */
.theme-toggle .sun {
    display: block;
}

.theme-toggle .moon {
    display: none;
}

.light-mode .theme-toggle .sun {
    display: none;
}

.light-mode .theme-toggle .moon {
    display: block;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-card-bg);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 16px 20px;
        gap: 4px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li a {
        padding: 12px 16px;
        width: 100%;
        text-align: center;
    }

    .nav-user-info {
        border-left: none;
        border-top: 1px solid var(--color-border);
        padding: 12px 16px;
        margin-top: 8px;
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .main-content {
        padding-left: 16px;
        padding-right: 16px;
    }

    .plans-grid {
        grid-template-columns: 1fr !important;
    }

    .hero-content {
        grid-template-columns: 1fr !important;
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr !important;
    }

    .stats-container {
        grid-template-columns: 1fr 1fr !important;
    }

    .dashboard-grid {
        grid-template-columns: 1fr !important;
    }

    .doctors-grid {
        grid-template-columns: 1fr !important;
    }

    .info-grid {
        grid-template-columns: 1fr 1fr !important;
    }

    .testimonials-grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr !important;
    }

    .info-grid {
        grid-template-columns: 1fr !important;
    }

    .modal-content {
        padding: 20px;
        width: 95%;
    }
}

/* ==================== UTILITIES ==================== */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    margin-bottom: 8px;
    color: var(--color-text-secondary) !important;
}

.back-link:hover {
    color: var(--color-primary) !important;
}

/* File Drop Zone */
.file-drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.file-drop-zone svg {
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.file-drop-zone p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.file-drop-zone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Search Box */
.search-box input {
    padding: 8px 14px;
    font-size: 0.85rem;
    min-width: 200px;
}

/* Plan Selector */
.plan-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.plan-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.plan-option:hover {
    border-color: var(--color-primary);
}

.plan-option input[type="radio"]:checked + .plan-option-content {
    color: var(--color-primary);
}

.plan-option input[type="radio"]:checked ~ .plan-option-content strong {
    color: var(--color-primary);
}

.plan-option:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.plan-option input[type="radio"] {
    accent-color: var(--color-primary);
    width: 18px;
    height: 18px;
}

.plan-option-content strong {
    display: block;
    font-size: 0.9rem;
}

.plan-option-content small {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}