/* ============================================
   Properties ⇄ JSON Converter — Styles
   ============================================ */

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

:root {
    --bg-primary: #0F0A1A;
    --bg-secondary: #1A1228;
    --bg-tertiary: #241C35;
    --bg-panel: #1E1630;
    --surface: #2A2140;
    --surface-hover: #342A4E;
    --border: rgba(108, 99, 255, 0.15);
    --border-hover: rgba(108, 99, 255, 0.35);

    --text-primary: #F0ECF9;
    --text-secondary: #A89EC8;
    --text-muted: #6E6390;

    --accent-primary: #6C63FF;
    --accent-primary-glow: rgba(108, 99, 255, 0.25);
    --accent-secondary: #FF6B9D;
    --accent-secondary-glow: rgba(255, 107, 157, 0.2);
    --accent-success: #4ADE80;
    --accent-error: #FF6B6B;
    --accent-warning: #FBBF24;

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

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px var(--accent-primary-glow);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 1.5rem;
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(108, 99, 255, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(255, 107, 157, 0.06) 0%, transparent 60%);
}

/* --- App Container --- */
.app-container {
    width: 100%;
    max-width: 1280px;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* --- Header --- */
.app-header {
    text-align: center;
    padding: 1rem 0 0.25rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-4px);
    }
}

.logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    font-weight: 400;
}

/* --- Options Bar --- */
.options-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
}

.option-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Toggle Switch */
.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.toggle-label input {
    display: none;
}

.toggle-switch {
    width: 36px;
    height: 20px;
    background: var(--surface);
    border-radius: 999px;
    position: relative;
    transition: var(--transition-base);
    border: 1px solid var(--border);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--transition-base);
}

.toggle-label input:checked+.toggle-switch {
    background: var(--accent-primary);
    border-color: transparent;
}

.toggle-label input:checked+.toggle-switch::after {
    transform: translateX(16px);
    background: white;
}

.toggle-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Editor Container --- */
.editor-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
    flex: 1;
    min-height: 400px;
}

.editor-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.editor-panel:focus-within {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

/* Panel Header */
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.9rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.panel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.properties-dot {
    background: var(--accent-primary);
    box-shadow: 0 0 6px var(--accent-primary-glow);
}

.json-dot {
    background: var(--accent-secondary);
    box-shadow: 0 0 6px var(--accent-secondary-glow);
}

.panel-actions {
    display: flex;
    gap: 0.25rem;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

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

.btn-icon:active {
    transform: scale(0.92);
}

/* Editor Wrapper */
.editor-wrapper {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.line-numbers {
    padding: 0.75rem 0;
    min-width: 38px;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.65;
    color: var(--text-muted);
    user-select: none;
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border);
    overflow: hidden;
}

.line-numbers span {
    display: block;
    padding-right: 0.6rem;
}

.editor-textarea {
    flex: 1;
    background: transparent;
    color: var(--text-primary);
    border: none;
    outline: none;
    resize: none;
    padding: 0.75rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.65;
    tab-size: 2;
    white-space: pre;
    overflow: auto;
}

.editor-textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

/* Scrollbar */
.editor-textarea::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

.editor-textarea::-webkit-scrollbar-thumb {
    background: var(--surface);
    border-radius: 999px;
}

.editor-textarea::-webkit-scrollbar-thumb:hover {
    background: var(--surface-hover);
}

/* --- Direction Toggle --- */
.direction-toggle-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 0.75rem;
}

.direction-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--accent-primary);
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.direction-toggle:hover {
    background: var(--surface);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: scale(1.08);
}

.direction-toggle:active {
    transform: scale(0.95);
}

.arrow-icon {
    transition: var(--transition-base);
}

.arrow-icon.reverse {
    display: none;
}

.direction-toggle.reversed .arrow-icon:first-child {
    display: none;
}

.direction-toggle.reversed .arrow-icon.reverse {
    display: block;
}

.direction-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* --- Status Bar --- */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.status-left,
.status-right {
    display: flex;
    gap: 1rem;
}

.status-item.success {
    color: var(--accent-success);
}

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

/* --- Toast Notification --- */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: 0.82rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(16px);
    opacity: 0;
    transition: var(--transition-slow);
    z-index: 100;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--accent-success);
    font-weight: 700;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .editor-container {
        grid-template-columns: 1fr;
        gap: 0.75rem;
        min-height: auto;
    }

    .editor-panel {
        min-height: 220px;
    }

    .direction-toggle-wrapper {
        flex-direction: row;
        padding: 0.5rem 0;
    }

    .direction-toggle {
        transform: rotate(90deg);
    }

    .direction-toggle:hover {
        transform: rotate(90deg) scale(1.08);
    }

    .option-group {
        gap: 1rem;
    }

    .options-bar {
        padding: 0.6rem 0.75rem;
    }

    .logo h1 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .option-group {
        gap: 0.75rem;
    }

    .toggle-text {
        font-size: 0.72rem;
    }

    .status-bar {
        flex-direction: column;
        gap: 0.25rem;
        align-items: flex-start;
    }
}