/* ========================================
   ERYOPS - Modern UI
   ======================================== */

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --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);
    --navbar-height: 64px;
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: white;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 100;
    box-shadow: var(--shadow);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--gray-600);
    transition: all 0.2s;
}

.menu-toggle:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--gray-900);
}

.brand-logo {
    height: 36px;
    width: auto;
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    display: none;
}

@media (min-width: 640px) {
    .user-name { display: block; }
}

.logout-form { margin: 0; }

.btn-logout {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--gray-500);
    transition: all 0.2s;
}

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

/* ========================================
   SIDEBAR
   ======================================== */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--gray-200);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 90;
    overflow-y: auto;
}

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

@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
    }
    .menu-toggle { display: none; }
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    color: var(--gray-700);
}

@media (min-width: 1024px) {
    .sidebar-header { display: none; }
}

.sidebar-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
    border-radius: var(--radius);
}

.sidebar-close:hover {
    background: var(--gray-100);
}

.sidebar-nav {
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.sidebar-nav a:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

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

.sidebar-nav a svg {
    flex-shrink: 0;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 80;
}

.sidebar-overlay.open {
    display: block;
}

@media (min-width: 1024px) {
    .sidebar-overlay { display: none !important; }
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
    min-height: calc(100vh - 60px);
    padding: 2rem 1rem;
}

.main-content.authenticated {
    padding-top: calc(var(--navbar-height) + 2rem);
}

@media (min-width: 1024px) {
    .main-content.authenticated {
        margin-left: var(--sidebar-width);
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .card { padding: 2rem; }
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 1.875rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.5rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.25rem; margin-bottom: 1rem; }
h4 { font-size: 1.125rem; margin-bottom: 0.75rem; }

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    background: var(--primary);
    color: white;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: white;
    transition: all 0.2s;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.form-grid {
    display: grid;
    gap: 1rem;
}

@media (min-width: 640px) {
    .form-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .form-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.form-full {
    grid-column: 1 / -1;
}

/* ========================================
   TABLES
   ======================================== */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
}

.table tbody tr:hover {
    background: var(--gray-50);
}

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

.table-actions {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
}

.alert svg {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* ========================================
   STATS
   ======================================== */
.stats-grid {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
}

.stat-icon.success { background: var(--success); }
.stat-icon.warning { background: var(--warning); }
.stat-icon.danger { background: var(--danger); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* ========================================
   FILTERS
   ======================================== */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: flex-end;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.filters .form-group {
    margin-bottom: 0;
    flex: 1;
    min-width: 150px;
}

.filters .form-control {
    font-size: 0.875rem;
}

.filters .btn-group {
    flex-shrink: 0;
}

/* ========================================
   PAGINATION
   ======================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ========================================
   LOGIN PAGE
   ======================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
}

.login-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.login-logo img {
    height: 64px;
    width: auto;
}

.login-title {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 2rem;
    font-size: 0.9375rem;
}

/* ========================================
   DETAIL VIEW
   ======================================== */
.detail-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .detail-grid { grid-template-columns: repeat(2, 1fr); }
}

.detail-section {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.detail-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.detail-value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-900);
    text-align: right;
}

/* ========================================
   SUCCESS PAGE
   ======================================== */
.success-container {
    text-align: center;
    padding: 2rem 0;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.success-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.success-code {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--gray-100);
    padding: 1rem 2rem;
    border-radius: var(--radius);
    display: inline-block;
    margin: 1rem 0;
}

.success-subtitle {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--gray-500);
    font-size: 0.875rem;
    border-top: 1px solid var(--gray-200);
    background: white;
}

.footer.authenticated {
    margin-left: 0;
}

@media (min-width: 1024px) {
    .footer.authenticated {
        margin-left: var(--sidebar-width);
    }
}

/* ========================================
   UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none; }

@media (max-width: 639px) {
    .hide-mobile { display: none !important; }
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Toast animation */
.toast {
    position: fixed;
    top: calc(var(--navbar-height) + 1rem);
    right: 1rem;
    padding: 1rem 1.5rem;
    background: var(--success);
    color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease, fadeOut 0.5s ease 2.5s forwards;
    z-index: 1000;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; visibility: hidden; }
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background: var(--gray-200);
    color: var(--gray-700);
}

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

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

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-primary {
    background: #e0e7ff;
    color: #3730a3;
}