/* ── Design Tokens ── */
:root {
    /* Surface */
    --bg-0: oklch(0.08 0.005 270);
    --bg-1: oklch(0.12 0.005 270);
    --bg-2: oklch(0.15 0.005 270);
    --bg-3: oklch(0.18 0.005 270);

    /* Text */
    --ink-1: oklch(0.95 0.003 270);
    --ink-2: oklch(0.62 0.01 270);
    --ink-3: oklch(0.42 0.01 270);

    /* Accent — Netflix red */
    --red: oklch(0.63 0.25 25);
    --red-dim: oklch(0.63 0.25 25 / 0.12);
    --red-glow: oklch(0.63 0.25 25 / 0.3);

    /* Semantic */
    --green: oklch(0.78 0.17 155);
    --green-dim: oklch(0.78 0.17 155 / 0.1);
    --blue: oklch(0.72 0.14 250);
    --blue-dim: oklch(0.72 0.14 250 / 0.1);

    /* Border */
    --border: oklch(1 0 0 / 0.06);
    --border-hover: oklch(1 0 0 / 0.14);

    /* Radius */
    --r-xs: 4px;
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 20px;

    /* Type */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
    --text-xs: 0.6875rem;
    --text-sm: 0.75rem;
    --text-base: 0.875rem;
    --text-md: 1rem;
    --text-lg: 1.25rem;
    --text-xl: 1.75rem;
    --text-2xl: 2.25rem;

    /* Motion */
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --dur: 200ms;
}

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

body {
    font-family: var(--font-sans);
    color: var(--ink-1);
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    /* Layered background — subtle depth */
    background:
        radial-gradient(ellipse 600px 400px at 50% 0%, oklch(0.63 0.25 25 / 0.06), transparent),
        radial-gradient(ellipse 500px 300px at 80% 100%, oklch(0.72 0.14 250 / 0.04), transparent),
        var(--bg-0);
}

/* ── App Shell ── */
.app {
    max-width: 440px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* ── Topbar ── */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0 20px;
}

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

.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--red);
    color: white;
    border-radius: var(--r-sm);
    font-size: 13px;
    line-height: 1;
    box-shadow: 0 2px 12px var(--red-glow);
}

.brand-name {
    font-size: var(--text-lg);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.accent { color: var(--red); }

.topbar-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-xs);
    color: var(--ink-3);
    font-family: var(--font-mono);
    padding: 5px 10px;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: 100px;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    transition: all var(--dur) var(--ease);
}

.topbar-status.loading .status-dot {
    background: var(--red);
    box-shadow: 0 0 8px var(--red-glow);
    animation: pulse 1s ease-in-out infinite;
}

.topbar-status.error .status-dot {
    background: var(--red);
    box-shadow: 0 0 8px var(--red-glow);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ── Hero Card ── */
.hero {
    padding: 0 0 24px;
}

.hero-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 28px 24px;
    position: relative;
    overflow: hidden;
}

/* Subtle glow inside card */
.hero-card::before {
    content: '';
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 120px;
    background: radial-gradient(ellipse, var(--red-glow), transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.hero-label {
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    position: relative;
}

.hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    position: relative;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 20px;
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    background: var(--bg-2);
    color: var(--ink-1);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, oklch(1 0 0 / 0.04), transparent);
    pointer-events: none;
}

.btn:hover {
    background: var(--bg-3);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

.btn:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 2px;
}

.btn-primary:hover {
    border-color: oklch(0.63 0.25 25 / 0.4);
    box-shadow: 0 4px 24px var(--red-dim), 0 0 0 1px oklch(0.63 0.25 25 / 0.1);
}

.btn-accent {
    border-color: var(--red-dim);
    background: linear-gradient(180deg, oklch(0.63 0.25 25 / 0.15), oklch(0.63 0.25 25 / 0.08));
    color: oklch(0.85 0.15 25);
}

.btn-accent:hover {
    background: linear-gradient(180deg, oklch(0.63 0.25 25 / 0.25), oklch(0.63 0.25 25 / 0.12));
    border-color: var(--red);
    box-shadow: 0 4px 24px var(--red-dim), 0 0 0 1px oklch(0.63 0.25 25 / 0.15);
}

.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-icon {
    font-size: 1.1em;
}

/* ── Result Section ── */
.result {
    flex: 1;
    animation: fadeUp 300ms var(--ease-out);
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 20px;
    margin-bottom: 16px;
}

.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border-radius: var(--r-md);
    overflow: hidden;
    margin-bottom: 16px;
}

.data-cell {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    background: var(--bg-2);
}

.data-label {
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.data-value {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--ink-1);
}

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

/* ── Fields ── */
.field { margin-bottom: 12px; }
.field:last-child { margin-bottom: 0; }

.field-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.field-label {
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--ink-2);
}

.field-actions {
    display: flex;
    gap: 6px;
}

.field-input,
.field-textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--ink-1);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.5;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.field-input:focus,
.field-textarea:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 3px var(--red-dim);
}

.field-input { cursor: default; }

.field-textarea {
    resize: none;
    min-height: 72px;
}

/* ── Inline Buttons ── */
.btn-inline {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: var(--r-xs);
    background: transparent;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
}

.btn-inline:hover {
    background: var(--bg-2);
    border-color: var(--border-hover);
    color: var(--ink-1);
}

.btn-inline:active { transform: scale(0.96); }

.btn-inline:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 1px;
}

.btn-inline--blue {
    border-color: var(--blue-dim);
    color: var(--blue);
}

.btn-inline--blue:hover {
    background: var(--blue-dim);
    border-color: var(--blue);
}

.btn-inline.copied {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-dim);
}

/* ── Stats Bar ── */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
    margin-top: auto;
    margin-bottom: 24px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 18px 8px;
    background: var(--bg-1);
    transition: background var(--dur) var(--ease);
}

.stat:hover {
    background: var(--bg-2);
}

.stat-num {
    font-size: var(--text-xl);
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--ink-1);
    letter-spacing: -0.02em;
}

.stat-num--green { color: var(--green); }
.stat-num--yellow { color: #f59e0b; }
.stat-num--red { color: var(--red); }

.stat-lbl {
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Footer ── */
.footer {
    text-align: center;
    padding: 12px 0 20px;
    font-size: var(--text-xs);
    color: var(--ink-3);
    font-family: var(--font-mono);
}

/* ── Toast ── */
.toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    padding: 10px 22px;
    background: var(--green);
    color: oklch(0.12 0 0);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--r-sm);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease-out);
    z-index: 100;
    box-shadow: 0 4px 20px oklch(0.78 0.17 155 / 0.3);
}

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

/* ── Mobile ── */
@media (max-width: 480px) {
    .app { padding: 0 16px; }
    .topbar { padding: 20px 0 16px; }
    .hero-card { padding: 24px 18px; }
    .stat-num { font-size: var(--text-lg); }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── Focus ── */
:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 2px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }