:root {
    --primary-color: #3f51b5;
    /* Stitch blueish/indigo */
    --primary-hover: #303f9f;
    --background-color: #f3f4f6;
    /* Light gray background */
    --surface-color: #ffffff;
    /* White card surface */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --danger-color: #ef4444;
    --danger-hover: #dc2828;
    --success-color: #10b981;
    --success-hover: #059669;
    --sidebar-width: 260px;
    --header-height: 64px;
    --transition-speed: 0.3s;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --input-bg: #ffffff;
}

[data-theme="dark"] {
    --primary-color: #6366f1;
    --primary-hover: #818cf8;
    --background-color: #111827;
    --surface-color: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --input-bg: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--primary-hover);
}

/* =========================================
   LOGIN SCREEN (SPLIT LAYOUT)
   ========================================= */
.login-split {
    display: flex;
    min-height: 100vh;
    background-color: var(--background-color);
}

.login-split-left {
    flex: 1;
    background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8)), url('../images/fondobn.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    padding: 60px;
    color: white;
}

.login-split-content {
    max-width: 500px;
}

.login-split-content h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.login-split-content p {
    font-size: 16px;
    line-height: 1.6;
    color: #e5e7eb;
}

.login-split-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background-color: var(--background-color);
}

.login-form-wrapper {
    width: 100%;
    max-width: 420px;
}

.login-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.login-logo i {
    font-size: 28px;
    color: var(--primary-color);
}

.login-header h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 14px;
}

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

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}

.login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(63, 81, 181, 0.2);
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: var(--radius-sm, 8px);
    transition: color var(--transition-speed);
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    font-size: 15px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-speed), transform 0.1s;
    text-align: center;
}

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

.btn-primary:active {
    transform: scale(0.98);
}

.error-message {
    background-color: #fee2e2;
    color: #b91c1c;
    padding: 12px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* =========================================
   DASHBOARD LAYOUT
   ========================================= */
.layout-wrapper {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* SIDEBAR */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease;
    z-index: 100;
}

.sidebar.closed {
    transform: translateX(-100%);
    width: 0;
    overflow: hidden;
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.sidebar-logo i {
    font-size: 24px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    text-decoration: none;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.nav-item:hover {
    background-color: rgba(63, 81, 181, 0.05);
    color: var(--primary-color);
}

.nav-item.active {
    background-color: rgba(63, 81, 181, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.nav-item i {
    font-size: 20px;
}

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

.btn-logout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--danger-color);
    font-weight: 600;
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    cursor: pointer;
    transition: all var(--transition-speed);
    text-decoration: none;
}

.btn-logout:hover {
    background-color: rgba(239, 68, 68, 0.05);
    border-color: var(--danger-color);
}

/* THEME TOGGLE */
.theme-toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    margin-bottom: 16px;
    background-color: var(--background-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
}

.theme-toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.theme-toggle-switch {
    width: 44px;
    height: 24px;
    background-color: #cbd5e1;
    border-radius: var(--radius-full);
    position: relative;
    transition: background-color 0.3s ease;
}

[data-theme="dark"] .theme-toggle-switch {
    background-color: var(--primary-color);
}

.theme-toggle-thumb {
    width: 20px;
    height: 20px;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-toggle-thumb {
    transform: translateX(20px);
}

/* MAIN CONTENT */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    width: 100%;
}

.topbar {
    height: var(--header-height);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    flex-shrink: 0;
}

.menu-toggle {
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color var(--transition-speed);
}

.menu-toggle:hover {
    background-color: var(--background-color);
    color: var(--text-primary);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

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

.user-name {
    font-weight: 600;
    font-size: 14px;
    line-height: 1;
}

.user-role {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    text-transform: capitalize;
}

/* USER DROPDOWN */
.user-profile-container {
    position: relative;
    cursor: pointer;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 200px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background-color var(--transition-speed);
}

.dropdown-item:hover {
    background-color: var(--background-color);
}

.dropdown-item.text-danger {
    color: var(--danger-color);
}

.dropdown-item.text-danger:hover {
    background-color: rgba(239, 68, 68, 0.05);
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

/* =========================================
   COMPONENTS
   ========================================= */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    padding: 24px;
    margin-bottom: 24px;
}

.grid-cols-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

/* STATUS BADGES */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

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

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

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-speed);
    text-decoration: none;
    border: 1px solid transparent;
}

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

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

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

.btn-outline:hover {
    background-color: var(--background-color);
    border-color: #d1d5db;
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
    border-radius: 8px;
}

/* TABLES */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    padding: 16px;
    background-color: var(--input-bg);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-primary);
    vertical-align: middle;
}

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

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

/* FORMS */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
    background-color: var(--input-bg);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(63, 81, 181, 0.2);
}

.form-control:disabled {
    background-color: var(--background-color);
    cursor: not-allowed;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.alert {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* OVERLAY FOR MOBILE */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 90;
    backdrop-filter: blur(2px);
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .login-split-left {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        height: 100%;
        box-shadow: var(--shadow-xl);
    }

    .sidebar.closed {
        transform: translateX(-100%);
    }

    .sidebar:not(.closed)+.main-wrapper .sidebar-overlay {
        display: block;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .topbar {
        padding: 0 16px;
    }

    .content-area {
        padding: 16px;
    }
}