/* ==================== VARIABLES ==================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --dark: #1e293b;
    --light: #f8fafc;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0,0,0,0.1);
    --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: 0.5rem;
    --radius-lg: 0.75rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* ==================== LOGIN SCREEN ==================== */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.login-box {
    background: var(--card);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    text-align: center;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-logo {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.login-box h1 {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.login-box p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.login-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-light);
}

/* ==================== FORMULARIOS ==================== */
.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: all 0.2s;
    font-family: inherit;
}

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

/* ==================== BOTONES ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text);
}

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-group-center {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

/* ==================== APP LAYOUT ==================== */
.app-container {
    display: none;
    min-height: 100vh;
}

.app-container.active {
    display: flex;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

.nav-menu {
    flex: 1;
    padding: 1rem 0;
}

.nav-item {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    color: var(--text);
}

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

.nav-item.active {
    background: #eff6ff;
    border-left-color: var(--primary);
    color: var(--primary);
    font-weight: 500;
}

.nav-icon {
    font-size: 1.25rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.user-info-sidebar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.user-details {
    display: flex;
    flex-direction: column;
}

.user-details span {
    font-weight: 500;
    font-size: 0.875rem;
}

.user-details small {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--card);
    padding: 0.875rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

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

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

.breadcrumb {
    color: var(--text-light);
    font-size: 0.875rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-box {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.875rem;
}

.search-box input {
    padding: 0.5rem 1rem 0.5rem 2.25rem;
    border: 1.5px solid var(--border);
    border-radius: 2rem;
    width: 280px;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    width: 320px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: background 0.2s;
}

.user-menu:hover {
    background: var(--bg);
}

.avatar {
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.dropdown-icon {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* Content Area */
.content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

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

/* ==================== CARDS ==================== */
.card {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--secondary);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.stat-card.alert { border-left-color: var(--danger); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.info { border-left-color: var(--info); }

.stat-card h3 {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}

.stat-detail {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

/* ==================== TABLAS ==================== */
.table-responsive {
    overflow-x: auto;
}

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

.table thead th {
    background: var(--bg);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
}

.table tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

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

.table tbody tr.pendiente {
    background: #fffbeb;
}

.table tbody tr.conciliado {
    background: #f0fdf4;
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-pendiente {
    background: #fef3c7;
    color: #92400e;
}

.badge-conciliado {
    background: #d1fae5;
    color: #065f46;
}

.badge-propuesta {
    background: #dbeafe;
    color: #1e40af;
}

.badge-en_disputa {
    background: #fee2e2;
    color: #991b1b;
}

/* ==================== IMPORT ZONE ==================== */
.import-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

.import-zone:hover,
.import-zone.dragover {
    border-color: var(--primary);
    background: #eff6ff;
}

.import-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.import-formats {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.format-badge {
    padding: 0.375rem 0.875rem;
    background: var(--bg);
    border-radius: 2rem;
    font-size: 0.75rem;
    color: var(--text-light);
}

.import-preview {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* ==================== FILTERS ==================== */
.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.filter-group label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-light);
}

/* ==================== CONCILIATION PANEL ==================== */
.conciliation-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.conciliation-card {
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
}

.conciliation-card h4 {
    padding: 0.75rem 1rem;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

.conciliation-content {
    padding: 1rem;
}

.match-score-container {
    text-align: center;
    padding: 1rem;
}

.score-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 0.5rem;
    background: conic-gradient(var(--success) 0deg, var(--border) 0deg);
    position: relative;
}

.score-circle::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
}

.score-circle span {
    position: relative;
    z-index: 1;
}

/* ==================== REPORTS GRID ==================== */
.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.report-card {
    background: var(--bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.report-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.report-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.report-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.report-card p {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* ==================== PAGINATION ==================== */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

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

.modal {
    background: var(--card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 550px;
    max-height: 85vh;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.125rem;
}

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

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--card);
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease;
    min-width: 280px;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

/* ==================== UTILITIES ==================== */
.hidden {
    display: none !important;
}

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

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

.amount {
    font-family: 'SF Mono', 'Courier New', monospace;
    font-weight: 600;
}

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

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

/* ==================== ERROR ==================== */
.error-msg {
    color: var(--danger);
    font-size: 0.75rem;
    margin-top: 0.75rem;
    text-align: center;
    display: none;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-close {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .search-box input {
        width: 180px;
    }
    
    .search-box input:focus {
        width: 200px;
    }
    
    .conciliation-panel {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group-center {
        flex-direction: column;
    }
    
    .card-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .reports-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.75rem 1rem;
    }
    
    .content {
        padding: 1rem;
    }
    
    .user-menu span:not(.avatar) {
        display: none;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
}