/* ==========================================================================
   FACERE - Sistema de Gestión de Facturas
   Diseño inspirado en Invoicer.ai con sidebar lateral
   ========================================================================== */

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales */
    --primary-color: #007AFF;
    --primary-hover: #0051D5;
    --primary-light: #E5F2FF;
    --success-color: #34C759;
    --error-color: #FF3B30;
    --warning-color: #FF9500;
    --info-color: #5856D6;

    /* Colores sidebar */
    --sidebar-bg: #2C3544;
    --sidebar-hover: #3A4254;
    --sidebar-active: #007AFF;
    --sidebar-text: #A0A7B4;
    --sidebar-text-active: #FFFFFF;

    /* Colores de texto */
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-tertiary: #999999;

    /* Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7F8FA;
    --bg-tertiary: #FAFBFC;

    /* Bordes */
    --border-color: #E4E7EB;
    --border-radius: 8px;

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);

    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Sidebar */
    --sidebar-width: 240px;
}

/* Tipografía */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   LAYOUT - Sidebar + Main Content
   ========================================================================== */

body {
    display: flex;
    min-height: 100vh;
}

/* Body para páginas de login (sin sidebar) */
body.login-page {
    display: block;
}

/* Sidebar Lateral */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

/* Logo en Sidebar */
.sidebar-brand {
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.sidebar-brand-text {
    font-size: 18px;
    font-weight: 600;
    color: white;
}

/* Navegación Sidebar */
.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 2px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px var(--spacing-md);
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.sidebar-nav a:hover {
    background-color: var(--sidebar-hover);
    color: white;
}

.sidebar-nav a.active {
    background-color: var(--sidebar-active);
    color: white;
}

.sidebar-nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Footer del Sidebar */
.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 14px;
}

.sidebar-footer a:hover {
    background-color: var(--sidebar-hover);
    color: white;
    border-radius: 6px;
}

/* Contenido Principal */
.main-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar Superior (solo usuario) */
.navbar {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    padding: 12px var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-user span {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

/* Contenido Principal */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* Contenido para páginas sin sidebar (login) */
.main-content-login {
    flex: 1;
    padding: var(--spacing-xl);
    margin-left: 0 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* ==========================================================================
   HEADER DE PÁGINA
   ========================================================================== */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

.page-actions {
    display: flex;
    gap: 12px;
}

/* ==========================================================================
   BOTONES
   ========================================================================== */

.btn,
.btn-primary,
.btn-secondary,
.btn-logout,
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

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

.btn-logout {
    background-color: transparent;
    color: var(--error-color);
    border: 1px solid var(--border-color);
}

.btn-logout:hover {
    background-color: rgba(255, 59, 48, 0.05);
}

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

.btn-danger:hover {
    background-color: #D70015;
}

/* ==========================================================================
   CARDS - Con bordes definidos
   ========================================================================== */

.card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

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

.card-header h2,
.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

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

/* Stat Cards - Compactas con iconos */
.stat-card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.2s;
}

.stat-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-card-icon.primary {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.stat-card-icon.success {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--success-color);
}

.stat-card-icon.warning {
    background-color: rgba(255, 149, 0, 0.1);
    color: var(--warning-color);
}

.stat-card-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-card-content p {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Overview Cards - Estilo Invoicer.ai */
.overview-card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

.overview-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.overview-card-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-tertiary);
}

.overview-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.overview-card-link {
    font-size: 13px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.overview-card-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   TABLAS
   ========================================================================== */

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead {
    background-color: var(--bg-tertiary);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tbody tr {
    transition: background-color 0.2s;
}

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

tbody tr:last-child td {
    border-bottom: none;
}

/* ==========================================================================
   FORMULARIOS
   ========================================================================== */

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

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    font-size: 13px;
    color: var(--text-primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-primary);
    background-color: white;
    transition: all 0.2s;
    font-family: inherit;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* ==========================================================================
   BADGES
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

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

.badge-success {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--success-color);
}

.badge-error {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--error-color);
}

.badge-warning {
    background-color: rgba(255, 149, 0, 0.1);
    color: var(--warning-color);
}

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

/* ==========================================================================
   MENSAJES FLASH
   ========================================================================== */

.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.alert {
    padding: 14px 18px;
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 500;
    animation: slideIn 0.3s ease-out;
    position: relative;
    border: 1px solid;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-success {
    background-color: rgba(52, 199, 89, 0.95);
    border-color: var(--success-color);
    color: white;
}

.alert-error {
    background-color: rgba(255, 59, 48, 0.95);
    border-color: var(--error-color);
    color: white;
}

.alert-warning {
    background-color: rgba(255, 149, 0, 0.95);
    border-color: var(--warning-color);
    color: white;
}

.alert-info {
    background-color: rgba(88, 86, 214, 0.95);
    border-color: var(--info-color);
    color: white;
}

.alert .close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 16px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.alert .close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   GRID LAYOUTS
   ========================================================================== */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* ==========================================================================
   EMPTY STATES
   ========================================================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-tertiary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    font-size: 14px;
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   UTILIDADES
   ========================================================================== */

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }
.text-warning { color: var(--warning-color); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

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

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

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

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

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .page-actions {
        width: 100%;
        flex-direction: column;
    }

    .page-actions .btn {
        width: 100%;
    }
}

/* Footer */
.footer {
    background-color: white;
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-top: auto;
}

.footer p {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 13px;
}