/* ========================================
   MODERN LAYOUT - PROFESSIONAL DESIGN ??
   ======================================== */

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    
    --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;
    
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
    
    --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);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    color: var(--gray-900);
    background: var(--gray-50);
    overflow-x: hidden;
}

/* ========== APP CONTAINER ========== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========== HEADER ========== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 24px;
    color: var(--gray-700);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.brand i {
    font-size: 28px;
}

.brand-name {
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== SEARCH BOX ========== */
.header-center {
    flex: 1;
    max-width: 600px;
    margin: 0 24px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 18px;
}

.search-box input {
    width: 100%;
    height: 44px;
    padding: 0 16px 0 48px;
    border: 1px solid var(--gray-300);
    border-radius: 12px;
    font-size: 14px;
    transition: all 0.2s;
}

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

/* ========== USER MENU ========== */
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-menu {
    position: relative;
}

.user-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
}

.user-button:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
}

.user-role {
    font-size: 12px;
    color: var(--gray-500);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 8px;
    z-index: 1001;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border: none;
    background: none;
    border-radius: 8px;
    width: 100%;
    text-align: left;
    color: var(--gray-700);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.dropdown-item i {
    font-size: 16px;
    color: var(--gray-500);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 8px 0;
}

/* ========== SIDEBAR ========== */
.app-sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    bottom: 0;
    width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow: hidden;
}

.app-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

/* ========== MAIN CONTENT ========== */
.app-main {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.app-main.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed-width);
}

.content-wrapper {
    flex: 1;
    padding: 24px;
}

/* ========== FOOTER ========== */
.app-footer {
    background: white;
    border-top: 1px solid var(--gray-200);
    padding: 20px 24px;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
    font-size: 13px;
    color: var(--gray-600);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
}

/* ========== ERROR UI ========== */
#blazor-error-ui {
    background: #fee2e2;
    bottom: 0;
    box-shadow: 0 -1px 6px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0;
    position: fixed;
    width: 100%;
    z-index: 2000;
}

#blazor-error-ui .error-container {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    color: #991b1b;
    font-size: 14px;
}

#blazor-error-ui .error-container i {
    font-size: 20px;
}

#blazor-error-ui .reload {
    color: #991b1b;
    text-decoration: underline;
    margin-left: auto;
}

#blazor-error-ui .dismiss {
    background: none;
    border: none;
    color: #991b1b;
    font-size: 20px;
    cursor: pointer;
    margin-left: 12px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .search-box {
        display: none;
    }
    
    .user-info {
        display: none;
    }
}

@media (max-width: 768px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    
    .app-sidebar:not(.collapsed) {
        transform: translateX(0);
    }
    
    .app-main {
        margin-left: 0;
    }
    
    .brand-name {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}