/* ===== CSS RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: all 0.3s ease;
}

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #5856D6;
    --primary-hover: #4845C7;
    --secondary: #34C759;
    --accent: #FF9500;
    --error: #FF3B30;
    --warning: #FFCC02;
    --info: #007AFF;
    
    /* Light Theme */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;
    --text-primary: #212529;
    --text-secondary: #6C757D;
    --text-muted: #ADB5BD;
    --border: #DEE2E6;
    --border-light: #F1F3F4;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.main {
    min-height: calc(100vh - 80px);
    padding: var(--spacing-xl) 0;
}

/* ===== HEADER ===== */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--primary);
}

.logo i {
    font-size: var(--font-size-2xl);
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ===== BUTTONS ===== */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-icon,
.btn-timer {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(88, 86, 214, 0.3);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

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

.btn-danger:hover {
    background: #E6342A;
    transform: translateY(-1px);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-icon:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    position: relative;
}

.theme-checkbox {
    display: none;
}

.theme-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 60px;
    height: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 2px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.theme-label::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--primary);
    border-radius: 50%;
    transition: transform var(--transition-base);
    transform: translateX(0);
}

.theme-checkbox:checked + .theme-label::before {
    transform: translateX(30px);
}

.theme-label i {
    font-size: var(--font-size-xs);
    z-index: 1;
    color: var(--text-muted);
}

/* ===== TIMER SECTION ===== */
.timer-section {
    margin-bottom: var(--spacing-2xl);
}

.timer-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 2px 8px var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.timer-display {
    text-align: center;
}

.timer-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timer-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.timer-status {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timer-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-timer {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: var(--font-size-lg);
    padding: 0;
    transition: all var(--transition-fast);
}

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

.btn-play:hover {
    background: #2FB653;
    transform: scale(1.05);
}

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

.btn-stop:hover {
    background: #E6342A;
    transform: scale(1.05);
}

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

.btn-reset:hover {
    background: #E6B800;
    transform: scale(1.05);
}

/* ===== FORM SECTION ===== */
.form-section {
    margin-bottom: var(--spacing-2xl);
}

.form-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px var(--shadow);
    overflow: hidden;
}

.form-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.form-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.test-form {
    padding: var(--spacing-xl);
}

.form-group-section {
    margin-bottom: var(--spacing-2xl);
}

.form-group-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-light);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-group label.required::after {
    content: '*';
    color: var(--error);
    font-weight: bold;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 86, 214, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.form-actions-bottom {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-xl);
}

/* ===== TABLE SECTION ===== */
.table-section {
    margin-bottom: var(--spacing-2xl);
}

.table-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px var(--shadow);
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.table-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.table-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.search-box input {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-width: 200px;
}

.filter-box select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table th,
.data-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.data-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

/* Status-based row colors */
.data-table tbody tr.passed {
    border-left: 4px solid var(--secondary);
}

.data-table tbody tr.failed {
    border-left: 4px solid var(--error);
}

.data-table tbody tr.partial {
    border-left: 4px solid var(--warning);
}

.data-table tbody tr.new-bug {
    border-left: 4px solid var(--accent);
}

.data-table tbody tr.need-task {
    border-left: 4px solid var(--info);
}

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-right: var(--spacing-xs);
}

.action-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.action-btn.view:hover {
    background: var(--info);
    color: white;
}

.action-btn.edit:hover {
    background: var(--warning);
    color: white;
}

.action-btn.delete:hover {
    background: var(--error);
    color: white;
}

.table-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.table-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    gap: var(--spacing-xs);
}

.pagination button {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination button:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== STATISTICS SECTION ===== */
.stats-section {
    margin-bottom: var(--spacing-2xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 2px 8px var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: transform var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow-hover);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    font-size: var(--font-size-xl);
}

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

.stat-icon.error {
    background: var(--error);
}

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

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ===== MODALS ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: modalFadeIn var(--transition-base);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    animation: modalSlideIn var(--transition-base);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.loading-overlay.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--primary);
}

.loading-spinner i {
    font-size: var(--font-size-2xl);
}

.loading-spinner span {
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-lg);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 4px 16px var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: toastSlideIn var(--transition-base);
}

.toast.success {
    border-left: 4px solid var(--secondary);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast.success .toast-icon {
    color: var(--secondary);
}

.toast.error .toast-icon {
    color: var(--error);
}

.toast.warning .toast-icon {
    color: var(--warning);
}

.toast.info .toast-icon {
    color: var(--info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.toast-close {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* ===== ANIMATIONS ===== */
@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        height: 60px;
    }
    
    .logo h1 {
        font-size: var(--font-size-lg);
    }
    
    .timer-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .timer-controls {
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .form-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .form-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .table-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .table-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box input {
        min-width: auto;
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    .toast-container {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .btn-primary,
    .btn-secondary,
    .btn-danger {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .timer-time {
        font-size: var(--font-size-xl);
    }
    
    .btn-timer {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .form-actions-bottom {
        flex-direction: column;
    }
    
    .data-table {
        font-size: var(--font-size-xs);
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

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

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .timer-section,
    .form-section,
    .table-actions,
    .modal,
    .toast-container,
    .loading-overlay {
        display: none !important;
    }
    
    .table-card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .data-table th,
    .data-table td {
        border: 1px solid #000;
    }
}