/**
 * Stylesheet principal - Sistem Programări
 * Design modern, responsive, potrivit pentru aplicații business
 */

/* ===== VARIABILE CSS ===== */
:root {
    /* Culori principale */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    /* Culori neutre */
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #1e293b;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --border-dark: #cbd5e1;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

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

/* ===== LAYOUT ===== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: calc(100vh - 80px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ===== NAVIGATION ===== */
.main-nav {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-md);
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

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

.btn-logout {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--danger-color);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: background-color var(--transition-fast);
}

.btn-logout:hover {
    background-color: #dc2626;
    color: white;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: var(--spacing-sm);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: #475569;
}

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

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

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

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-edit {
    background-color: var(--info-color);
    color: white;
}

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

.btn-whatsapp {
    background-color: #25D366;
    color: white;
}

.btn-whatsapp:hover {
    background-color: #20ba5a;
}

/* ===== FORMS ===== */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-color);
}

.form-group label i {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.required {
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    background-color: var(--bg-color);
}

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

.form-control::placeholder {
    color: var(--text-light);
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert i {
    font-size: 1.25rem;
    margin-top: 2px;
}

.alert-error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert-success {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.alert ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

/* ===== CARDS ===== */
.appointment-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.appointment-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.appointment-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.appointment-client {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.appointment-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.appointment-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.appointment-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
}

.info-item i {
    color: var(--primary-color);
    margin-top: 2px;
    width: 18px;
}

.appointment-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ===== GRID LAYOUTS ===== */
.appointments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.dashboard-container,
.calendar-container,
.agenda-container,
.admin-container {
    background-color: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.page-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.section-title {
    font-size: 1.25rem;
    margin: var(--spacing-xl) 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title i {
    color: var(--primary-color);
}

/* ===== CALENDAR ===== */
.calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.calendar-month-year {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-sm);
}

.calendar-day-header {
    padding: var(--spacing-md);
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.calendar-day {
    aspect-ratio: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background-color: var(--bg-color);
    transition: all var(--transition-fast);
    position: relative;
    cursor: default;
}

.calendar-day.empty {
    background-color: transparent;
    border: none;
    cursor: default;
}

.calendar-day.clickable {
    cursor: pointer;
}

.calendar-day.clickable:hover {
    background-color: var(--bg-secondary);
    border-color: var(--primary-color);
}

.calendar-day.today {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.calendar-day.has-appointments {
    border-color: var(--success-color);
    border-width: 2px;
}

.calendar-day.has-appointments .appointment-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: var(--success-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.calendar-day.past {
    opacity: 0.5;
}

.day-number {
    font-size: 0.9375rem;
    font-weight: 500;
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-color);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--bg-secondary);
    color: var(--text-color);
}

.modal-body {
    padding: var(--spacing-lg);
}

.appointments-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.appointment-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
}

.appointment-time {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 60px;
}

.appointment-details {
    flex: 1;
}

/* ===== AGENDA ===== */
.filters-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.filters-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    font-size: 0.875rem;
}

.filter-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.agenda-table-container {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.agenda-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.agenda-table thead {
    background-color: var(--bg-secondary);
}

.agenda-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.agenda-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.agenda-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.phone-link {
    color: var(--primary-color);
    text-decoration: none;
}

.phone-link:hover {
    text-decoration: underline;
}

.note-preview {
    max-width: 300px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== ADMIN PANEL ===== */
.admin-table-container {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-color);
}

.admin-table thead {
    background-color: var(--bg-secondary);
}

.admin-table th,
.admin-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table tbody tr.inactive {
    opacity: 0.6;
}

.admin-actions-cell {
    display: flex;
    gap: var(--spacing-sm);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

.badge-danger {
    background-color: var(--danger-color);
    color: white;
}

.badge-warning {
    background-color: var(--warning-color);
    color: white;
}

.badge-admin {
    background-color: var(--primary-color);
    color: white;
}

.badge-user {
    background-color: var(--secondary-color);
    color: white;
}

.badge-secondary {
    background-color: var(--text-light);
    color: white;
}

/* ===== UTILITY CLASSES ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

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

.text-muted {
    color: var(--text-secondary);
}

.loading {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

.clickable {
    cursor: pointer;
}

/* ===== LOGIN PAGE ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
}

.login-box {
    background-color: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.login-header h1 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    color: var(--text-secondary);
    margin: 0;
}

.login-form {
    margin-top: var(--spacing-xl);
}

.login-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.login-footer small {
    color: var(--text-secondary);
}

/* ===== PWA INSTALL BANNER ===== */
.pwa-install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.pwa-install-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.pwa-install-icon {
    font-size: 2rem;
}

.pwa-install-text {
    flex: 1;
}

.pwa-install-text strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.pwa-install-text p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.9;
}

.pwa-install-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.pwa-install-banner .btn {
    background-color: white;
    color: var(--primary-color);
}

.pwa-install-banner .btn:hover {
    background-color: var(--bg-secondary);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 64px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 64px);
        background-color: var(--bg-color);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg);
        gap: 0;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu li a {
        width: 100%;
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .nav-user {
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding-left: 0;
        padding-top: var(--spacing-md);
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .appointments-grid {
        grid-template-columns: 1fr;
    }
    
    .calendar-grid {
        gap: var(--spacing-xs);
    }
    
    .calendar-day {
        padding: var(--spacing-xs);
        font-size: 0.875rem;
    }
    
    .calendar-navigation {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .calendar-month-year {
        font-size: 1.25rem;
        text-align: center;
    }
    
    .filters-form {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        flex-direction: column;
    }
    
    .filter-actions .btn {
        width: 100%;
    }
    
    .admin-table-container,
    .agenda-table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .pwa-install-content {
        flex-direction: column;
        text-align: center;
    }
    
    .pwa-install-buttons {
        width: 100%;
    }
    
    .pwa-install-buttons .btn {
        flex: 1;
    }
    
    .form-container {
        padding: var(--spacing-lg);
    }
    
    .dashboard-container,
    .calendar-container,
    .agenda-container,
    .admin-container {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .btn {
        font-size: 0.875rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .appointment-card {
        padding: var(--spacing-md);
    }
    
    .appointment-actions {
        flex-direction: column;
    }
}