/**
 * =====================================================
 * KARASANTES CRM - Professional Light Theme
 * =====================================================
 * Full Mobile Responsive CSS
 * =====================================================
 */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #0ea5e9;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px 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);
    
    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
    --transition: all 0.2s ease;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

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

p { margin-bottom: 1rem; }

/* =====================================================
   LOGIN PAGE
   ===================================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.login-box {
    width: 100%;
    max-width: 420px;
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo h1 {
    color: var(--primary);
    font-size: 1.75rem;
    font-weight: 700;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* =====================================================
   LAYOUT - MAIN STRUCTURE
   ===================================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

/* Top Navigation */
.top-nav {
    background: #1e293b;
    color: white;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 60px;
    max-width: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand h1 {
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.nav-brand-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-menu li a svg {
    width: 18px;
    height: 18px;
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 8px;
}

/* =====================================================
   MAIN CONTENT
   ===================================================== */
.main-content {
    flex: 1;
    padding: 20px;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* =====================================================
   CARDS
   ===================================================== */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

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

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

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

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

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    color: var(--danger);
    font-size: 0.75rem;
    margin-top: 4px;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    color: white;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

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

.btn-success:hover:not(:disabled) {
    background: #16a34a;
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

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

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

.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* =====================================================
   TABLES
   ===================================================== */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

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

.table .actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* =====================================================
   SEARCH & FILTERS
   ===================================================== */
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.search-input input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9375rem;
}

.search-input svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

/* =====================================================
   ALERTS
   ===================================================== */
.alert {
    padding: 14px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #e0f2fe;
    color: #075985;
    border: 1px solid #bae6fd;
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
    color: inherit;
}

.alert-close:hover {
    opacity: 1;
}

/* =====================================================
   PAGINATION
   ===================================================== */
.pagination-container {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.pagination {
    display: flex;
    list-style: none;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

.pagination .page-item .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.pagination .page-item .page-link:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
}

.pagination .page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.pagination .page-item.disabled .page-link {
    opacity: 0.5;
    pointer-events: none;
}

/* =====================================================
   MODAL
   ===================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-primary);
    border-radius: 12px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* =====================================================
   CALENDAR
   ===================================================== */
.calendar-container {
    background: var(--bg-primary);
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.calendar-title {
    font-size: 1.125rem;
    font-weight: 600;
}

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

.calendar-day-header {
    padding: 12px;
    text-align: center;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.calendar-day {
    min-height: 100px;
    padding: 8px;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day:hover {
    background: var(--bg-secondary);
}

.calendar-day.other-month {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

.calendar-day.today {
    background: rgba(37, 99, 235, 0.1);
}

.calendar-day-number {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 4px;
}

.calendar-day.today .calendar-day-number {
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-event {
    font-size: 0.75rem;
    padding: 2px 6px;
    background: var(--primary-light);
    color: white;
    border-radius: 4px;
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* =====================================================
   EMAIL MARKETING
   ===================================================== */
.email-progress {
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.progress-bar-container {
    height: 20px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 10px;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
}

.progress-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.progress-stat {
    display: flex;
    align-items: center;
    gap: 8px;
}

.progress-stat-value {
    font-weight: 600;
}

/* =====================================================
   BACK TO DASHBOARD BUTTON
   ===================================================== */
.back-to-dashboard {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: 16px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* =====================================================
   UTILITIES
   ===================================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

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

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

.hidden { display: none !important; }

/* =====================================================
   LOADING SPINNER
   ===================================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    flex-direction: column;
    gap: 20px;
}

/* =====================================================
   RESPONSIVE - TABLET
   ===================================================== */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: #1e293b;
        flex-direction: column;
        padding: 10px;
        display: none;
        gap: 5px;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li a {
        padding: 12px 16px;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .user-info span {
        display: none;
    }
    
    .calendar-day {
        min-height: 80px;
        padding: 6px;
    }
}

/* =====================================================
   RESPONSIVE - MOBILE
   ===================================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .card-body {
        padding: 15px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table th,
    .table td {
        padding: 10px 12px;
    }
    
    .btn {
        padding: 10px 16px;
    }
    
    .modal {
        margin: 10px;
        max-height: calc(100vh - 20px);
    }
    
    .calendar-day {
        min-height: 60px;
        padding: 4px;
    }
    
    .calendar-day-number {
        font-size: 0.75rem;
    }
    
    .calendar-event {
        font-size: 0.625rem;
        padding: 1px 4px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-input {
        min-width: 100%;
    }
    
    .btn-group {
        width: 100%;
    }
    
    .btn-group .btn {
        flex: 1;
    }
    
    .back-to-dashboard {
        bottom: 10px;
        right: 10px;
    }
    
    .back-to-dashboard .btn {
        padding: 10px;
    }
    
    .back-to-dashboard .btn span {
        display: none;
    }
}

/* =====================================================
   RESPONSIVE - SMALL MOBILE
   ===================================================== */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
    
    .nav-brand h1 {
        font-size: 1rem;
    }
    
    .nav-container {
        padding: 0 10px;
    }
    
    .calendar-grid {
        font-size: 0.75rem;
    }
    
    .calendar-day-header {
        padding: 8px 4px;
        font-size: 0.625rem;
    }
    
    .pagination .page-link {
        min-width: 32px;
        height: 32px;
        padding: 0 8px;
        font-size: 0.75rem;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .top-nav,
    .back-to-dashboard,
    .btn,
    .search-box,
    .pagination {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}