/* ===== CSS Custom Properties ===== */
:root {
    --primary: #7C3AED;
    --primary-dim: rgba(124, 58, 237, 0.15);
    --secondary: #A78BFA;
    --secondary-dim: rgba(167, 139, 250, 0.15);
    --accent: #EDE9FE;
    --accent-dim: rgba(237, 233, 254, 0.1);
    --success: #10B981;
    --success-dim: rgba(16, 185, 129, 0.15);
    --warning: #F59E0B;
    --warning-dim: rgba(245, 158, 11, 0.15);
    --danger: #EF4444;
    --danger-dim: rgba(239, 68, 68, 0.15);
    --info: #3B82F6;
    --info-dim: rgba(59, 130, 246, 0.15);

    --bg-primary: #0F0A1E;
    --bg-secondary: #150F2A;
    --bg-elevated: #1C1535;
    --bg-card: rgba(28, 21, 53, 0.7);
    --bg-input: rgba(15, 10, 30, 0.9);

    --text-primary: #EDE9FE;
    --text-secondary: #9B8FC4;
    --text-muted: #5E5185;

    --border: rgba(167, 139, 250, 0.1);
    --border-focus: var(--primary);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px rgba(124, 58, 237, 0.2);

    --glass-bg: rgba(28, 21, 53, 0.6);
    --glass-border: rgba(167, 139, 250, 0.08);
    --glass-blur: 16px;

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

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

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

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);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 15% 0%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 100%, rgba(167, 139, 250, 0.07) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(15, 10, 30, 0.88);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: var(--primary-dim);
    border: 1px solid rgba(124, 58, 237, 0.2);
    flex-shrink: 0;
}

.app-title {
    font-size: 1.125rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.app-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.2;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    line-height: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #9333EA);
    color: #fff;
    box-shadow: 0 2px 12px rgba(124, 58, 237, 0.35);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.5);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: rgba(167, 139, 250, 0.2);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.75rem;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ===== URL Input ===== */
.url-input-group {
    display: flex;
    gap: 10px;
}

.input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    pointer-events: none;
}

.url-input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

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

.url-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.input-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ===== Paste Section ===== */
.panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.15);
}

.panel-title {
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-icon {
    font-size: 1rem;
}

.code-editor {
    width: 100%;
    min-height: 160px;
    padding: 14px 16px;
    background: var(--bg-input);
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    resize: vertical;
    outline: none;
    white-space: pre;
}

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

.code-editor:focus {
    box-shadow: inset 0 0 0 1px var(--primary);
}

/* ===== Score Cards ===== */
.score-cards {
    display: grid;
    grid-template-columns: 200px repeat(3, 1fr);
    gap: 16px;
}

.score-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.score-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.score-card-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    grid-row: span 1;
}

.score-ring-container {
    position: relative;
    width: 100px;
    height: 100px;
}

.score-ring {
    width: 100%;
    height: 100%;
}

.score-value {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.score-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.score-grade {
    font-size: 1.125rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
    background: var(--primary-dim);
    color: var(--primary);
}

.score-card-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

.score-card-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* ===== Categories Grid ===== */
.categories-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.category-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.12);
}

.category-title {
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cat-icon {
    font-size: 1rem;
}

.category-count {
    font-size: 0.6875rem;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--primary-dim);
    color: var(--secondary);
    font-weight: 600;
}

.header-list {
    padding: 8px;
    max-height: 350px;
    overflow-y: auto;
}

.header-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.header-item:last-child {
    border-bottom: none;
}

.header-item:hover {
    background: rgba(124, 58, 237, 0.06);
}

.header-name {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--secondary);
    flex-shrink: 0;
    min-width: 140px;
}

.header-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    word-break: break-all;
    flex: 1;
}

.header-badge {
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.03em;
    flex-shrink: 0;
}

.badge-pass {
    background: var(--success-dim);
    color: var(--success);
}

.badge-warn {
    background: var(--warning-dim);
    color: var(--warning);
}

.badge-fail {
    background: var(--danger-dim);
    color: var(--danger);
}

.badge-info {
    background: var(--info-dim);
    color: var(--info);
}

/* ===== Recommendations ===== */
.recommendations-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 20px;
}

.section-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-icon {
    font-size: 1.125rem;
}

.recommendations-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rec-item {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    border-left: 3px solid;
    transition: all var(--transition-fast);
}

.rec-item:hover {
    transform: translateX(4px);
}

.rec-item.rec-danger {
    background: var(--danger-dim);
    border-color: var(--danger);
}

.rec-item.rec-warning {
    background: var(--warning-dim);
    border-color: var(--warning);
}

.rec-item.rec-success {
    background: var(--success-dim);
    border-color: var(--success);
}

.rec-item.rec-info {
    background: var(--info-dim);
    border-color: var(--info);
}

.rec-title {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.rec-desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.rec-fix {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    margin-top: 6px;
    background: rgba(0, 0, 0, 0.25);
    padding: 6px 10px;
    border-radius: 6px;
}

/* ===== cURL Panel ===== */
.curl-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 20px;
}

.curl-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.curl-header .section-title {
    margin-bottom: 0;
}

.curl-code {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-sm);
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--accent);
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ===== Results Animation ===== */
.results-section {
    animation: fadeSlideUp 0.5s ease both;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

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

/* ===== Footer ===== */
.app-footer {
    text-align: center;
    padding: 16px 24px;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .score-cards {
        grid-template-columns: 1fr 1fr;
    }

    .score-card-main {
        grid-column: span 2;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 16px;
    }

    .header-actions {
        width: 100%;
    }

    .main-content {
        padding: 16px;
    }

    .url-input-group {
        flex-direction: column;
    }

    .score-cards {
        grid-template-columns: 1fr;
    }

    .score-card-main {
        grid-column: span 1;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(167, 139, 250, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(167, 139, 250, 0.35);
}

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus:not(:focus-visible) {
    outline: none;
}

::selection {
    background: rgba(124, 58, 237, 0.3);
    color: #fff;
}