/* ============================================
   Gamma Code Generator - Modern Web Styles
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Colors */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --success-50: #f0fdf4;
    --success-500: #22c55e;
    --success-600: #16a34a;

    --danger-50: #fef2f2;
    --danger-500: #ef4444;
    --danger-600: #dc2626;

    --warning-500: #f59e0b;

    /* Neutral Colors */
    --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;

    /* Semantic Colors */
    --bg-primary: var(--gray-50);
    --bg-secondary: #ffffff;
    --bg-tertiary: var(--gray-100);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-400);
    --border-color: var(--gray-200);
    --border-focus: var(--primary-500);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-500) 100%);
    --gradient-success: linear-gradient(135deg, var(--success-600) 0%, var(--success-500) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --border-color: #334155;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   Header
   ============================================ */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 24px;
    height: 24px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Theme Toggle */
#themeToggle {
    position: relative;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

#themeToggle svg {
    position: absolute;
    width: 20px;
    height: 20px;
    transition: var(--transition-normal);
}

#themeToggle .icon-sun {
    opacity: 1;
    transform: rotate(0deg);
}

#themeToggle .icon-moon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme="dark"] #themeToggle .icon-sun {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="dark"] #themeToggle .icon-moon {
    opacity: 1;
    transform: rotate(0deg);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    width: 100%;
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.tab-btn svg {
    width: 20px;
    height: 20px;
}

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

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Panel Container */
.panel-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.offset-container {
    grid-template-columns: 400px 1fr;
}

/* Panel */
.panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.panel-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    overflow: auto;
}

/* Settings Group */
.settings-group {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-group input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-fast);
    min-width: 120px;
}

.input-group input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.range-group {
    flex: 1;
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.range-inputs input {
    width: 100px;
    text-align: center;
}

.range-separator {
    color: var(--text-tertiary);
    font-weight: 500;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

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

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

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

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(34, 197, 94, 0.3);
}

.btn-danger {
    background: var(--danger-500);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-600);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

/* ============================================
   Table
   ============================================ */
.table-container {
    flex: 1;
    overflow: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.config-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

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

.config-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
}

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

.config-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.config-table td input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid transparent;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: inherit;
    font-family: inherit;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.config-table td input:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-primary);
}

.config-table .row-index {
    color: var(--text-tertiary);
    font-weight: 500;
    width: 50px;
}

.config-table .actions-cell {
    width: 80px;
    text-align: center;
}

.btn-delete {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--radius-full);
    background: var(--danger-50);
    color: var(--danger-500);
}

.btn-delete:hover {
    background: var(--danger-500);
    color: white;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

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

/* ============================================
   Code Output
   ============================================ */
.code-output {
    flex: 1;
    background: var(--gray-900);
    border-radius: var(--radius-md);
    overflow: auto;
    min-height: 300px;
    max-height: 500px;
}

.code-output pre {
    margin: 0;
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-all;
}

.code-output code {
    display: block;
}

/* ============================================
   Offset Configs
   ============================================ */
.offset-settings .panel-body {
    max-height: calc(100vh - 300px);
}

.global-offset-settings {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.offset-configs-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.offset-set {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    position: relative;
}

.offset-set-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.offset-set-title {
    font-weight: 600;
    color: var(--primary-600);
}

.btn-remove-set {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--danger-500);
    cursor: pointer;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    transition: var(--transition-fast);
}

.btn-remove-set:hover {
    background: var(--danger-500);
    color: white;
}

.offset-set-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.offset-set-inputs .input-group input {
    width: 100%;
}

.temp-names-section {
    margin-top: var(--spacing-md);
}

.temp-names-section h4 {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.temp-names-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 200px;
    overflow-y: auto;
}

.temp-name-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.temp-name-row label {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    width: 25px;
    text-align: right;
}

.temp-name-row input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.offset-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.offset-actions .btn {
    flex: 1;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1000;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    animation: slideIn var(--transition-normal), fadeOut var(--transition-normal) 2.7s;
    border-left: 4px solid var(--primary-500);
    max-width: 400px;
}

.toast.success {
    border-left-color: var(--success-500);
}

.toast.error {
    border-left-color: var(--danger-500);
}

.toast.warning {
    border-left-color: var(--warning-500);
}

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

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .panel-container {
        grid-template-columns: 1fr;
    }

    .offset-container {
        grid-template-columns: 1fr;
    }

    .main-content {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-md);
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .tab-navigation {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1;
        justify-content: center;
    }

    .action-buttons {
        flex-direction: column;
    }

    .right-actions {
        width: 100%;
    }

    .right-actions .btn {
        flex: 1;
    }

    .settings-group {
        flex-direction: column;
    }

    .range-inputs {
        flex-wrap: wrap;
    }
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: var(--radius-full);
}

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

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

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