/* ================================================
   SAELON — Estilos Globales
   Paleta: #003366 | #F5F5F5 | #FF6B35
   ================================================ */

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

:root {
    --color-primary:    #003366;
    --color-secondary:  #F5F5F5;
    --color-accent:     #FF6B35;
    --color-white:      #ffffff;
    --color-text:       #1a1a1a;
    --color-text-light: #666666;
    --color-border:     #d0d0d0;
    --color-error:      #cc0000;
    --color-success:    #007a33;

    --font-family: 'Segoe UI', Arial, sans-serif;
    --font-size-base: 14px;

    --sidebar-width: 240px;
    --navbar-height: 60px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);

    --radius-sm: 4px;
    --radius-md: 8px;

    --transition: 0.2s ease;
}

html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--color-secondary);
    color: var(--color-text);
}

/* ---- Layout principal ---- */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.app-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    margin-left: var(--sidebar-width);
}

.app-main {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    background-color: var(--color-secondary);
}

/* ---- Navbar ---- */
.navbar {
    height: var(--navbar-height);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--color-white);
    text-decoration: none;
}

.navbar-brand span {
    color: var(--color-accent);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}

.navbar-user-name {
    color: var(--color-secondary);
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    transition: background var(--transition), color var(--transition);
}

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

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 200;
    box-shadow: var(--shadow-md);
}

.sidebar-header {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
}

.sidebar-header span {
    color: var(--color-accent);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

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

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 20px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 13px;
    transition: background var(--transition), color var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background-color: rgba(255,255,255,0.08);
    color: var(--color-white);
    border-left-color: var(--color-accent);
}

/* ---- Login ---- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
}

.login-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    padding: 40px 36px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-md);
}

.login-logo {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo h1 {
    font-size: 26px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.login-logo h1 span {
    color: var(--color-accent);
}

.login-logo p {
    font-size: 12px;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ---- Formularios ---- */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text);
    background-color: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0,51,102,0.12);
}

.form-control.error {
    border-color: var(--color-error);
}

.form-error {
    font-size: 11px;
    color: var(--color-error);
    margin-top: 4px;
}

/* ---- Botones ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background var(--transition), opacity var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    width: 100%;
}

.btn-primary:hover {
    background-color: #004080;
}

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

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

.btn-accent:hover {
    background-color: #e55a28;
}

/* ---- Alertas ---- */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
}

.alert-error {
    background-color: #fff0f0;
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.alert-success {
    background-color: #f0fff4;
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

/* ---- Dashboard ---- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.dashboard-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary);
}

.dashboard-card-title {
    font-size: 12px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.dashboard-card-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
}

/* ---- Tablas ---- */
.table-wrapper {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

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

.table tr:hover td {
    background-color: #f0f4f8;
}

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

.page-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.page-subtitle {
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: 4px;
}