/*
 * SMS Gateway - Plataforma de Administración
 * Estilos Centralizados - Tema Azul Profesional
 */

/* ========================================
   VARIABLES DE COLOR - TEMA AZUL
   ======================================== */
:root {
    /* Colores principales */
    --primary-blue: #2C3E50;
    --primary-blue-dark: #1A252F;
    --primary-blue-light: #34495E;

    --accent-blue: #3498DB;
    --accent-blue-dark: #2980B9;
    --accent-blue-light: #5DADE2;

    --secondary-blue: #1ABC9C;
    --secondary-blue-dark: #16A085;

    /* Colores de estado */
    --success: #27AE60;
    --warning: #F39C12;
    --danger: #E74C3C;
    --info: #3498DB;

    /* Colores de fondo */
    --bg-primary: #ECF0F1;
    --bg-secondary: #FFFFFF;
    --bg-dark: #2C3E50;

    /* Texto */
    --text-primary: #2C3E50;
    --text-secondary: #7F8C8D;
    --text-light: #BDC3C7;
    --text-white: #FFFFFF;

    /* Bordes y sombras */
    --border-color: #BDC3C7;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);

    /* Transiciones */
    --transition: all 0.3s ease;
}

/* ========================================
   ESTILOS GLOBALES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
}

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

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

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

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

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

.login-logo h1 {
    color: var(--primary-blue);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form .form-control {
    height: 48px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    font-size: 14px;
}

.login-form .form-control:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.login-form .btn-login {
    height: 48px;
    background: var(--accent-blue);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
}

.login-form .btn-login:hover {
    background: var(--accent-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

/* ========================================
   DASHBOARD LAYOUT
   ======================================== */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-dark);
    color: var(--text-white);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: var(--transition);
}

.sidebar-header {
    padding: 24px 20px;
    background: var(--primary-blue-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.sidebar-header p {
    font-size: 12px;
    color: var(--text-light);
    margin: 5px 0 0 0;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-section-title {
    padding: 8px 20px;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-light);
    font-weight: 600;
    letter-spacing: 1px;
    margin-top: 10px;
}

.sidebar-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-light);
    transition: var(--transition);
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
    background: rgba(52, 152, 219, 0.15);
    color: var(--text-white);
    border-left: 3px solid var(--accent-blue);
}

.sidebar-menu li a i {
    width: 20px;
    margin-right: 12px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex: 1;
    background: var(--bg-primary);
    min-height: 100vh;
}

/* Navbar */
.navbar-custom {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    box-shadow: var(--shadow-sm);
}

.navbar-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 0;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.navbar-user .user-info {
    text-align: right;
}

.navbar-user .user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-blue);
}

.navbar-user .user-role {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Content Area */
.content-area {
    padding: 24px;
}

.page-header {
    margin-bottom: 24px;
}

.page-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 0 0 8px 0;
}

.page-description {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: transparent;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 0;
}

.card-body {
    padding: 24px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

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

/* ========================================
   TABLES
   ======================================== */
.table-container {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
}

.table-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.table-search {
    display: flex;
    gap: 8px;
    align-items: center;
    flex: 1;
    max-width: 400px;
}

.table-search input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--bg-primary);
}

.data-table thead th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--primary-blue);
    border-bottom: 2px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

.data-table tbody tr.editing {
    background: #FFF9E6;
}

.data-table input.inline-edit {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--accent-blue);
    border-radius: 4px;
    background: white;
}

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

.pagination-info {
    color: var(--text-secondary);
    font-size: 13px;
}

.pagination-controls {
    display: flex;
    gap: 8px;
}

.pagination-controls button {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.pagination-controls button:hover:not(:disabled) {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

.pagination-controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-controls button.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* ========================================
   BADGES
   ======================================== */
.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(39, 174, 96, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(243, 156, 18, 0.15);
    color: var(--warning);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.15);
    color: var(--danger);
}

.badge-info {
    background: rgba(52, 152, 219, 0.15);
    color: var(--info);
}

.badge-secondary {
    background: rgba(127, 140, 141, 0.15);
    color: var(--text-secondary);
}

/* ========================================
   MODALS
   ======================================== */
.modal-content {
    border-radius: 12px;
    border: none;
}

.modal-header {
    background: var(--primary-blue);
    color: white;
    border-radius: 12px 12px 0 0;
    padding: 20px 24px;
}

.modal-title {
    font-weight: 600;
    font-size: 18px;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ========================================
   FORMS
   ======================================== */
.form-label {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 8px;
    font-size: 13px;
}

.form-control,
.form-select {
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 14px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-text {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
    padding: 14px 18px;
    border-radius: 8px;
    border-left: 4px solid;
    font-size: 14px;
}

.alert-success {
    background: rgba(39, 174, 96, 0.1);
    border-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.1);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.1);
    border-color: var(--danger);
    color: var(--danger);
}

.alert-info {
    background: rgba(52, 152, 219, 0.1);
    border-color: var(--info);
    color: var(--info);
}

/* ========================================
   STATS CARDS
   ======================================== */
.stats-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent-blue);
}

.stats-card .stats-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(52, 152, 219, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 24px;
    margin-bottom: 12px;
}

.stats-card .stats-title {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.stats-card .stats-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-blue);
    margin: 8px 0;
}

.stats-card .stats-change {
    font-size: 12px;
    color: var(--success);
}

/* ========================================
   UTILITIES
   ======================================== */
.text-muted {
    color: var(--text-secondary) !important;
}

.text-primary {
    color: var(--accent-blue) !important;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .table-header {
        flex-direction: column;
        align-items: stretch;
    }

    .table-search {
        max-width: 100%;
    }
}

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

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

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

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