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

/* Light Theme CSS Variables - 纯白色系 */
:root {
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-input: #F5F5F5;
    --bg-table-alternate: #FAFAFA;
    --bg-table-hover: #F0F0F0;

    /* Text Colors */
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-bright: #333333;

    /* Accent Colors */
    --accent-green: #10B981;
    --accent-orange: #F59E0B;
    --accent-purple: #18A1FD;
    --accent-yellow: #FBBF24;
    --accent-red: #EF4444;
    --accent-blue: #18A1FD;

    /* Button Colors */
    --btn-primary-bg: #FBBF24;
    --btn-primary-hover: #F59E0B;
    --btn-secondary-bg: #E8E4DD;
    --btn-secondary-hover: #D8D4CC;
    --btn-success-bg: #10B981;
    --btn-success-hover: #059669;
    --btn-danger-bg: #EF4444;
    --btn-danger-hover: #DC2626;
    --btn-info-bg: #18A1FD;
    --btn-info-hover: #0D7ED9;

    /* Border & Separator */
    --border-color: #E5E5E5;
    --separator-color: #F0F0F0;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(44, 44, 44, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(44, 44, 44, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(44, 44, 44, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(44, 44, 44, 0.08), 0 10px 10px -5px rgba(44, 44, 44, 0.03);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Animation Durations */
    --transition-fast: 0.15s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Page Load Animation */
body {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ==================== SVG Icons ==================== */
.icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.icon-lg {
    width: 24px;
    height: 24px;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.icon-xl {
    width: 32px;
    height: 32px;
}

/* Icon with text spacing */
.icon + span,
.icon + text {
    margin-left: 10px;
}

/* ==================== Login Page ==================== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(-45deg, #FAF9F6, #F5F3EF, #EDE9E2, #FAF9F6);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite, fadeIn 0.5s ease-in;
    position: relative;
    overflow: hidden;
}

/* Animated background particles */
.login-page::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(251, 191, 36, 0.08) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes float {
    0%, 100% { transform: translate(-25%, -25%) rotate(0deg); }
    50% { transform: translate(-25%, -25%) rotate(180deg); }
}

/* ==================== Login Logo ==================== */
.login-logo {
    text-align: center;
    margin-bottom: 2px;
}

.login-logo img {
    width: 240px;
    height: auto;
    display: inline-block;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.login-container {
    width: 100%;
    padding: 0 20px;
    margin-top: -60px;
    position: relative;
    z-index: 1;
}

.login-box {
    background: rgba(255, 254, 252, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(44, 44, 44, 0.08);
    padding: 45px 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 420px;
    margin: 0 auto;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box h1 {
    text-align: center;
    color: var(--accent-purple);
    margin-bottom: 8px;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.login-box h2 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 35px;
    font-size: 20px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ==================== App Container ==================== */
.app-container {
    display: flex;
    flex-direction: row;
    min-height: 100vh;
    animation: fadeIn 0.3s ease-in;
}

/* ==================== Sidebar ==================== */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-header {
    padding: 24px 20px;
    background: #18A1FD;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.3px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 8px;
    background-color: #0E172A;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-normal);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    font-weight: 500;
    font-size: 14px;
    gap: 12px;
}

.sidebar-nav a:hover {
    background-color: #E3F2FD;
    color: var(--text-primary);
    transform: translateX(4px);
}

.sidebar-nav a.active {
    background: #18A1FD;
    color: #FFFFFF;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

.sidebar-user {
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
}

.sidebar-user-info {
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
}

.sidebar-user-info strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
    font-size: 14px;
}

.sidebar-logout {
    width: 100%;
    padding: 10px 16px;
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.sidebar-logout:hover {
    background-color: var(--accent-red);
    color: white;
    border-color: var(--accent-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* ==================== Main Content ==================== */
.app-main {
    flex: 1;
    margin-left: 260px;
    padding: 28px;
    max-width: calc(100% - 260px);
}

.app-main-header {
    margin-bottom: 28px;
    animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-main-header h1 {
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition-normal);
    background-color: var(--bg-input);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    transform: translateY(-1px);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-color: var(--bg-input);
    color: var(--text-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2318A1FD' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    border: 1px solid #18A1FD;
    transition: all var(--transition-normal);
}

.form-group select:hover {
    border-color: #0D7ED9;
}

/* ==================== Buttons ==================== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-normal);
    font-family: inherit;
}

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

.btn-primary {
    background: linear-gradient(135deg, #18A1FD 0%, #0D7ED9 100%);
    color: white;
    width: 100%;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(24, 161, 253, 0.4);
}

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

.btn-secondary:hover {
    background-color: #E3F2FD;
    color: #18A1FD;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ==================== Error Message ==================== */
.error-message {
    color: var(--accent-red);
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
    padding: 12px;
    background: transparent;
    border-radius: var(--radius-sm);
    border: none;
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* ==================== Search Box ==================== */
.search-box {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 24px;
    animation: fadeIn 0.5s ease-out 0.2s both;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-input-wrapper .icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition-normal);
    background-color: var(--bg-input);
    color: var(--text-primary);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* ==================== Table ==================== */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeIn 0.5s ease-out 0.1s both;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: #EFF8FF;
    color: var(--text-primary);
}

.data-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: none;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--separator-color);
    font-size: 14px;
    color: var(--text-bright);
}

.data-table tbody tr {
    transition: all var(--transition-fast);
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--bg-table-alternate);
}

.data-table tbody tr:hover {
    background-color: #E3F2FD;
    transform: scale(1.001);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.loading,
.error,
.no-data {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 15px;
}

.error {
    color: var(--accent-red);
}

/* ==================== Pagination ==================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 16px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0 16px;
}

.pagination button {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-input);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.pagination button:hover:not(:disabled) {
    background-color: #E3F2FD;
    color: #18A1FD;
    border-color: #18A1FD;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.2);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    color: var(--text-secondary);
}

.pagination .page-numbers {
    display: flex;
    gap: 6px;
}

.pagination .page-numbers button {
    min-width: 36px;
    padding: 8px;
}

.pagination .page-numbers button.active {
    background: linear-gradient(135deg, #18A1FD 0%, #0D7ED9 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

/* ==================== Action Buttons ==================== */
.btn-add {
    padding: 10px 20px;
    background: linear-gradient(135deg, #18A1FD 0%, #0D7ED9 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

.btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(24, 161, 253, 0.4);
}

.btn-edit {
    padding: 7px 14px;
    background: linear-gradient(135deg, var(--btn-info-bg) 0%, #1D4ED8 100%);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    margin-right: 6px;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-edit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

.btn-delete {
    padding: 7px 14px;
    background: linear-gradient(135deg, var(--btn-danger-bg) 0%, #DC2626 100%);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-delete:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.actions {
    white-space: nowrap;
    width: 160px;
}

/* ==================== Status Badges ==================== */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-online {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-offline {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(245, 158, 11, 0.1) 100%);
    color: var(--accent-orange);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* ==================== Summary Cards ==================== */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
    animation: fadeIn 0.5s ease-out;
}

.summary-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 28px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 20px;
}

.summary-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.summary-card-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.summary-card-icon svg {
    width: 32px;
    height: 32px;
}

.summary-card-content {
    flex: 1;
}

.summary-card-title {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
    text-transform: none;
    letter-spacing: 0.5px;
}

.summary-card-value {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
}

.summary-card.devices .summary-card-icon {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%);
}

.summary-card.devices .summary-card-icon svg {
    fill: var(--accent-purple);
}

.summary-card.devices .summary-card-value {
    color: var(--accent-purple);
}

.summary-card.servers .summary-card-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.1) 100%);
}

.summary-card.servers .summary-card-icon svg {
    fill: var(--accent-blue);
}

.summary-card.servers .summary-card-value {
    color: var(--accent-blue);
}

.summary-card.companies .summary-card-icon {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
}

.summary-card.companies .summary-card-icon svg {
    fill: var(--accent-green);
}

.summary-card.companies .summary-card-value {
    color: var(--accent-green);
}

.summary-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: var(--text-secondary);
}

/* ==================== Summary Cards - Users ==================== */
.summary-card.users .summary-card-icon {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(251, 191, 36, 0.1) 100%);
}

.summary-card.users .summary-card-icon svg {
    fill: var(--accent-yellow);
}

.summary-card.users .summary-card-value {
    color: var(--accent-yellow);
}

/* ==================== Recent Devices Section ==================== */
.recent-section {
    margin-top: 40px;
    animation: fadeIn 0.5s ease-out 0.2s both;
}

.recent-section-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.recent-section-title svg {
    width: 20px;
    height: 20px;
    fill: var(--accent-purple);
}

.summary-table .data-table th,
.summary-table .data-table td {
    padding: 12px 16px;
}

.summary-table .data-table th {
    font-size: 13px;
}

.summary-table .data-table td {
    font-size: 14px;
}

/* ==================== Modal ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    backdrop-filter: blur(5px);
    background-color: rgba(44, 44, 44, 0.4);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--bg-card);
    margin: 8% auto;
    padding: 32px;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: modalSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.close {
    color: var(--text-secondary);
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    transition: all var(--transition-normal);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover,
.close:focus {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.modal-content h2 {
    color: var(--text-primary);
    margin-bottom: 24px;
    font-size: 22px;
    font-weight: 700;
    padding-right: 40px;
}

.modal-content .form-group {
    margin-bottom: 18px;
}

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

.modal-content .form-group input,
.modal-content .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition-normal);
    background-color: var(--bg-input);
    color: var(--text-primary);
}

.modal-content .form-group input:focus,
.modal-content .form-group select:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.modal-content .form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--separator-color);
}

.btn-cancel,
.btn-save {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-cancel:hover {
    background-color: #E3F2FD;
    color: #18A1FD;
    transform: translateY(-1px);
}

.btn-save {
    background: linear-gradient(135deg, #18A1FD 0%, #0D7ED9 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(24, 161, 253, 0.3);
}

.btn-save:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(24, 161, 253, 0.4);
}

/* ==================== Dark Theme Scrollbar ==================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #F5F3EF;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #E8E4DD 0%, #D8D4CC 100%);
    border-radius: 5px;
    border: 2px solid #F5F3EF;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .app-main {
        margin-left: 0;
        padding: 16px;
        max-width: 100%;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

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

    .app-main-header h1 {
        font-size: 24px;
    }

    .search-box {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input-wrapper {
        max-width: 100%;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 10px 12px;
    }

    .actions {
        width: auto;
        min-width: 140px;
    }

    .btn-edit,
    .btn-delete {
        margin-right: 4px;
        margin-bottom: 4px;
    }

    .pagination {
        flex-wrap: wrap;
        padding: 12px 16px;
    }

    .pagination-info {
        width: 100%;
        text-align: center;
        margin: 8px 0 0 0;
    }
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 24px;
        margin: 16px;
    }

    .login-box h1 {
        font-size: 24px;
    }

    .login-box h2 {
        font-size: 18px;
        margin-bottom: 24px;
    }

    .table-container {
        overflow-x: auto;
        border-radius: var(--radius-sm);
    }

    .data-table {
        min-width: 600px;
    }

    .modal-content {
        margin: 16px;
        padding: 24px;
        width: calc(100% - 32px);
    }

    .modal-content h2 {
        font-size: 18px;
    }
}

/* ==================== Loading States ==================== */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

/* ==================== Utility Classes ==================== */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

.slide-up {
    animation: slideUp 0.4s ease-out;
}

/* ==================== Top User Bar ==================== */
.top-user-bar {
    position: fixed;
    top: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 28px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 99;
    box-shadow: var(--shadow-sm);
}

.top-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 13px;
    color: var(--text-secondary);
}

.top-user-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.top-user-company {
    font-size: 12px;
}

.top-logout-btn {
    padding: 8px 16px;
    background: #F0F0F0;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-logout-btn:hover {
    background: var(--accent-red);
    color: #FFFFFF;
    border-color: var(--accent-red);
}