/* ============================================
   PALETA: #26798e (primario), #63CAA7 (acento),
           #FFC172 (alerta), #FFE3B3 (fondo cálido)
   ============================================ */

:root {
    --primary: #26798e;
    --primary-dark: #1a5a6a;
    --accent: #63CAA7;
    --accent-dark: #4db893;
    --warning: #FFC172;
    --warning-light: #FFE3B3;
    --dark: #1a1a2e;
    --gray: #6c757d;
    --light: #f8f9fa;
    --white: #ffffff;
    --danger: #e74c3c;
    --success: #28a745;
    --sidebar-width: 260px;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Segoe UI', 'Poppins', sans-serif;
    background: #f0f4f8;
    color: var(--dark);
    overflow-x: hidden;
}

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

.login-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    padding: 50px 40px;
    width: 100%;
    max-width: 420px;
    animation: slideUp 0.6s ease;
}

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

.login-card .logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: white;
}

.login-card h2 {
    text-align: center;
    color: var(--primary);
    margin-bottom: 8px;
    font-weight: 700;
}

.login-card p.subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 14px;
}

.form-group {
    position: relative;
    margin-bottom: 20px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 6px;
    display: block;
}

.form-group .input-icon {
    position: absolute;
    left: 15px;
    top: 42px;
    color: var(--gray);
    font-size: 16px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 14px 15px 14px 45px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 15px;
    transition: var(--transition);
    background: var(--light);
}

.form-group input:focus {
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(38,121,142,0.1);
    outline: none;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 42px;
    cursor: pointer;
    color: var(--gray);
    font-size: 16px;
    transition: var(--transition);
}

.toggle-password:hover { color: var(--primary); }

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(38,121,142,0.3);
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar-brand {
    padding: 25px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-brand .brand-icon {
    width: 42px;
    height: 42px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.sidebar-brand h4 {
    color: white;
    font-size: 16px;
    font-weight: 700;
    margin: 0;
}

.sidebar-brand span {
    color: rgba(255,255,255,0.6);
    font-size: 11px;
}

.sidebar-menu {
    padding: 15px 0;
    list-style: none;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 25px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left-color: var(--accent);
}

.sidebar-menu li a i {
    width: 22px;
    text-align: center;
    font-size: 16px;
}

/* ========== MAIN CONTENT ========== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 25px;
    min-height: 100vh;
    transition: var(--transition);
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.top-bar h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--dark);
}

.top-bar h1 span {
    color: var(--primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--white);
    padding: 10px 18px;
    border-radius: 50px;
    box-shadow: var(--shadow);
}

.user-info .avatar {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

/* ========== CARDS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.stat-card.primary::before { background: var(--primary); }
.stat-card.accent::before { background: var(--accent); }
.stat-card.warning::before { background: var(--warning); }
.stat-card.danger::before { background: var(--danger); }

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-card .stat-icon {
    width: 55px;
    height: 55px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 15px;
}

.stat-card.primary .stat-icon { background: rgba(38,121,142,0.1); color: var(--primary); }
.stat-card.accent .stat-icon { background: rgba(99,202,167,0.1); color: var(--accent); }
.stat-card.warning .stat-icon { background: rgba(255,193,114,0.15); color: var(--warning); }
.stat-card.danger .stat-icon { background: rgba(231,76,60,0.1); color: var(--danger); }

.stat-card h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--gray);
    font-size: 13px;
    margin: 0;
}

/* ========== CHARTS ========== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
}

.chart-card h5 {
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
}

/* ========== TABLES & CARDS ========== */
.content-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 25px;
}

.content-card .card-header {
    padding: 20px 25px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.content-card .card-header h5 {
    font-weight: 700;
    margin: 0;
    color: var(--dark);
}

.content-card .card-body {
    padding: 25px;
}

/* Search & Filters */
.search-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.search-input {
    position: relative;
}

.search-input input {
    padding: 10px 15px 10px 40px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 14px;
    width: 280px;
    transition: var(--transition);
}

.search-input input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(38,121,142,0.1);
}

.search-input i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

/* Buttons */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(38,121,142,0.3);
    color: white;
}

.btn-warning-custom {
    background: var(--warning);
    color: var(--dark);
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger-custom {
    background: var(--danger);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-success-custom {
    background: var(--success);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--light);
    padding: 14px 18px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 14px 18px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
}

.data-table tr:hover td {
    background: rgba(99,202,167,0.05);
}

.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-active { background: rgba(99,202,167,0.15); color: var(--accent-dark); }
.badge-inactive { background: rgba(231,76,60,0.1); color: var(--danger); }
.badge-pending { background: rgba(255,193,114,0.2); color: #c78b30; }
.badge-paid { background: rgba(40,167,69,0.1); color: var(--success); }

/* Client Cards View */
.client-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.client-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary);
}

.client-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.client-card .client-name {
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--dark);
}

.client-card .client-info {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 5px;
}

.client-card .client-info i {
    width: 20px;
    color: var(--primary);
}

.client-card .debt-amount {
    font-size: 22px;
    font-weight: 700;
    color: var(--danger);
    margin-top: 10px;
}

.client-card .debt-amount.zero {
    color: var(--accent);
}

.client-card .card-actions {
    margin-top: 15px;
    display: flex;
    gap: 8px;
}

.client-card .card-actions button {
    padding: 7px 14px;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

/* Pagination */
.pagination-custom {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.pagination-custom button {
    padding: 8px 14px;
    border: 2px solid #e9ecef;
    background: var(--white);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: var(--transition);
}

.pagination-custom button:hover,
.pagination-custom button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-custom .page-info {
    font-size: 13px;
    color: var(--gray);
    margin: 0 10px;
}

/* Modal */
.modal-custom .modal-content {
    border-radius: var(--radius);
    border: none;
    overflow: hidden;
}

.modal-custom .modal-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    padding: 20px 25px;
}

.modal-custom .modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-custom .modal-body {
    padding: 25px;
}

.modal-custom .modal-footer {
    border: none;
    padding: 15px 25px;
}

/* Form Styles */
.form-label-custom {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 6px;
}

.form-control-custom {
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 14px;
    transition: var(--transition);
}

.form-control-custom:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(38,121,142,0.1);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    z-index: 1001;
    width: 45px;
    height: 45px;
    background: var(--primary);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding-top: 70px;
    }
    .mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .search-input input {
        width: 100%;
    }
    .content-card .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .search-bar {
        width: 100%;
    }
    .search-input {
        width: 100%;
    }
    .search-input input {
        width: 100%;
    }
    .client-cards-grid {
        grid-template-columns: 1fr;
    }
    .top-bar h1 {
        font-size: 20px;
    }
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

/* Invoice Summary */
.invoice-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.invoice-summary .summary-item {
    background: var(--light);
    padding: 18px;
    border-radius: 12px;
    text-align: center;
}

.invoice-summary .summary-item h4 {
    font-size: 24px;
    font-weight: 700;
}

.invoice-summary .summary-item p {
    font-size: 12px;
    color: var(--gray);
    margin: 0;
}

/* Abono Progress */
.abono-progress {
    height: 8px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 8px;
}

.abono-progress .progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    border-radius: 10px;
    transition: width 0.5s ease;
}

/* Contabilidad Cards */
.account-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.account-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.account-card h6 {
    font-weight: 700;
    margin-bottom: 5px;
}

.account-card .amount {
    font-size: 22px;
    font-weight: 700;
}

.account-card .amount.debt { color: var(--danger); }
.account-card .amount.credit { color: var(--accent); }