/* ========================================
   Profilioo JSON Formatter - Styles
   ======================================== */

/* CSS Variables - Light Mode (Default) */
:root {
    /* Brand Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-primary-alpha: rgba(37, 99, 235, 0.1);
    
    /* Background Colors */
    --color-bg: #ffffff;
    --container-bg: #f8fafc;
    --panel-bg: #f1f5f9;
    --header-bg: #ffffff;
    
    /* Text Colors */
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;
    
    /* Border & Shadow */
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-strong: rgba(0, 0, 0, 0.12);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    
    /* Status Colors */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --color-warning: #f59e0b;
    
    /* Radius */
    --radius: 16px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Spacing */
    --container-max: 1400px;
    --header-height: 72px;
}

/* Dark Mode */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --container-bg: #1e293b;
    --panel-bg: #1e293b;
    --header-bg: #0f172a;
    
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.12);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Smooth theme transition for all elements */
*, *::before, *::after {
    transition: background-color var(--transition-base), 
                border-color var(--transition-base), 
                box-shadow var(--transition-base);
}

/* ========================================
   Utility Classes
   ======================================== */

.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;
}

/* ========================================
   Container
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }
}

/* ========================================
   Header
   ======================================== */

.header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    letter-spacing: -0.02em;
}

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

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--panel-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-border-strong);
    color: var(--color-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.theme-toggle:active {
    transform: translateY(0);
}

.theme-icon {
    width: 20px;
    height: 20px;
    position: absolute;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.theme-icon.moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

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

/* ========================================
   Main Content
   ======================================== */

.main {
    flex: 1;
    padding: 40px 0 80px;
}

@media (max-width: 640px) {
    .main {
        padding: 24px 0 60px;
    }
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: linear-gradient(135deg, #2563eb, #7c3aed);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Tool Section
   ======================================== */

.tool-section {
    background-color: var(--container-bg);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

/* ========================================
   Toolbar
   ======================================== */

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 24px;
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--color-border);
    align-items: center;
    justify-content: space-between;
}

.toolbar-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .toolbar {
        padding: 16px;
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-group {
        justify-content: center;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn:disabled::before {
    display: none;
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: #ffffff;    
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 12px -2px rgba(37, 99, 235, 0.35), 0 4px 6px -1px rgba(37, 99, 235, 0.25);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 4px -1px rgba(37, 99, 235, 0.3);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-primary-alpha);
    color: var(--color-primary);
    border-color: var(--color-primary-alpha);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Ghost Button */
.btn-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--container-bg);
    color: var(--color-text);
    border-color: var(--color-border-strong);
    transform: translateY(-1px);
}

/* Danger Button */
.btn-danger:hover:not(:disabled) {
    background-color: var(--color-error);
    color: white;
    border-color: var(--color-error);
}

/* Keyboard Shortcut */
.shortcut {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: 2px 6px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xs);
    margin-left: 4px;
    opacity: 0.8;
}

.btn-secondary .shortcut,
.btn-ghost .shortcut {
    background-color: var(--color-border);
    color: var(--color-text-muted);
}

.btn:hover .shortcut {
    background-color: rgba(255, 255, 255, 0.25);
}

/* ========================================
   Status Bar
   ======================================== */

.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background-color: var(--container-bg);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
    transition: background-color var(--transition-fast);
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.status-dot.valid {
    background-color: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
}

.status-dot.invalid {
    background-color: var(--color-error);
    box-shadow: 0 0 8px var(--color-error);
}

.status-text {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.status-meta {
    display: flex;
    gap: 20px;
}

.meta-item {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

@media (max-width: 640px) {
    .status-bar {
        flex-direction: column;
        gap: 10px;
        padding: 12px 16px;
        text-align: center;
    }
    
    .status-meta {
        gap: 16px;
    }
}

/* ========================================
   Editor Container
   ======================================== */

.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 500px;
}

@media (max-width: 968px) {
    .editor-container {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
}

/* Editor Panel */
.editor-panel {
    display: flex;
    flex-direction: column;
    background-color: var(--panel-bg);
}

.input-panel {
    border-right: 1px solid var(--color-border);
}

@media (max-width: 968px) {
    .input-panel {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background-color: var(--container-bg);
    border-bottom: 1px solid var(--color-border);
}

.panel-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--panel-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-btn:hover {
    color: var(--color-text);
    border-color: var(--color-border-strong);
    background-color: var(--container-bg);
    transform: translateY(-1px);
}

.upload-btn .btn-icon {
    width: 16px;
    height: 16px;
}

/* Editor Wrapper */
.editor-wrapper {
    flex: 1;
    position: relative;
    min-height: 300px;
}

/* Editor Textarea */
.editor {
    width: 100%;
    height: 100%;
    min-height: 300px;
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--panel-bg);
    border: none;
    resize: none;
    outline: none;
    tab-size: 2;
}

.editor::placeholder {
    color: var(--color-text-muted);
}

.editor:focus {
    background-color: var(--panel-bg);
}

/* Scrollbar Styling */
.editor::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.editor::-webkit-scrollbar-track {
    background: transparent;
}

.editor::-webkit-scrollbar-thumb {
    background-color: var(--color-border-strong);
    border-radius: var(--radius-full);
    border: 2px solid var(--panel-bg);
}

.editor::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-muted);
}

/* Drop Zone */
.drop-zone {
    position: absolute;
    inset: 0;
    background-color: var(--color-primary-alpha);
    border: 2px dashed var(--color-primary);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 10;
}

.drop-zone.active {
    opacity: 1;
    visibility: visible;
}

.drop-zone-content {
    text-align: center;
    color: var(--color-primary);
}

.drop-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    stroke-width: 1.5;
}

.drop-text {
    font-size: 1.125rem;
    font-weight: 500;
}

/* Loading Spinner */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

.loading-spinner.active {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Alerts
   ======================================== */

.alert {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    margin: 0;
    border-radius: 0;
    animation: slideIn var(--transition-base);
}

.alert.active {
    display: flex;
}

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

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.alert-message {
    flex: 1;
    font-size: 0.9375rem;
}

.alert-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    border-radius: var(--radius-xs);
    opacity: 0.6;
    transition: opacity var(--transition-fast), background-color var(--transition-fast);
}

.alert-close:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.05);
}

.alert-close svg {
    width: 16px;
    height: 16px;
}

.alert-error {
    background-color: var(--color-error-bg);
    color: var(--color-error);
    border-top: 1px solid var(--color-error);
}

.alert-success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border-top: 1px solid var(--color-success);
}

/* ========================================
   Copy Tooltip
   ======================================== */

.copy-tooltip {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: var(--color-text);
    color: var(--color-bg);
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.copy-tooltip.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ========================================
   Features Section
   ======================================== */

.features {
    margin-top: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background-color: var(--container-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-alpha);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--container-bg);
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
    margin-top: auto;
}

.footer-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Focus Styles (Accessibility)
   ======================================== */

button:focus-visible,
textarea:focus-visible,
label:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   Selection Styles
   ======================================== */

::selection {
    background-color: var(--color-primary-alpha);
    color: var(--color-text);
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .header,
    .toolbar,
    .status-bar,
    .panel-header,
    .features,
    .footer,
    .theme-toggle {
        display: none !important;
    }
    
    .editor-container {
        display: block;
    }
    
    .editor-panel {
        border: 1px solid #ccc;
        margin-bottom: 20px;
        page-break-inside: avoid;
    }
    
    .editor {
        height: auto;
        min-height: 200px;
    }
}