/* ========================================
   Tailwind to CSS Converter — Crimson Edge Theme
   ======================================== */

:root {
    --primary: #EF4444;
    --primary-hover: #DC2626;
    --secondary: #F87171;
    --accent: #FBBF24;
    --bg: #1A0A0A;
    --bg-surface: #221010;
    --bg-elevated: #2C1818;
    --bg-input: #1E0C0C;
    --border: #3D1E1E;
    --border-focus: #EF4444;
    --text: #F5E0E0;
    --text-muted: #A87070;
    --text-dim: #6B4444;
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --transition: 0.2s ease;
    --success: #10B981;
    --error: #EF4444;
}

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

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
}

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

.logo h1 {
    font-size: 1.05rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--transition);
}

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

.btn-primary-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    border-color: transparent;
}

.btn-primary-header:hover {
    filter: brightness(1.1);
    color: #fff;
}

.app-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr auto;
    gap: 0;
    min-height: 0;
}

.input-panel,
.output-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.preview-panel {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}

.panel-header h2 {
    font-size: 0.85rem;
    font-weight: 600;
}

.class-count {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: var(--mono);
}

.code-input {
    flex: 1;
    width: 100%;
    background: var(--bg-input);
    color: var(--accent);
    border: none;
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    overflow: auto;
}

.code-input::placeholder {
    color: var(--text-dim);
}

.code-output {
    flex: 1;
    overflow: auto;
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--secondary);
    white-space: pre-wrap;
    word-break: break-word;
    background: var(--bg-input);
}

.output-actions {
    display: flex;
    gap: 4px;
}

.tag-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 3px 10px;
    border-radius: 14px;
    font-size: 0.72rem;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
}

.tag-btn:hover {
    color: var(--text-muted);
    border-color: var(--text-muted);
}

.tag-btn.active {
    background: rgba(239, 68, 68, 0.12);
    border-color: var(--primary);
    color: var(--primary);
}

.validation {
    padding: 8px 16px;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    font-size: 0.78rem;
}

.validation-item {
    padding: 2px 0;
}

.validation-item.warning {
    color: var(--accent);
}

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

.validation-item.ok {
    color: var(--success);
}

.preview-box {
    padding: 20px;
    background: var(--bg-input);
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#preview-element {
    padding: 16px 24px;
    transition: all 0.3s ease;
    color: var(--text);
}

.css-key {
    color: var(--secondary);
}

.css-value {
    color: var(--accent);
}

.css-comment {
    color: var(--text-dim);
    font-style: italic;
}

.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 0.85rem;
    color: var(--text);
    box-shadow: var(--shadow);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
    max-width: 300px;
}

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

::-webkit-scrollbar {
    width: 5px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

@media (max-width: 768px) {
    .app-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .input-panel {
        border-right: none;
        border-bottom: 1px solid var(--border);
        max-height: 300px;
    }

    .output-panel {
        max-height: 300px;
    }
}