:root {
    color-scheme: dark;
    font-family: "Inter", "Syne", sans-serif;
    --bg: #030712;
    --surface: rgba(17, 24, 39, 0.6);
    --surface-strong: #111827;
    --surface-muted: #1f2937;
    --text: #d1d5db;
    --text-soft: #9ca3af;
    --line: rgba(255, 255, 255, 0.08);
    --accent: #7c3aed;
    --accent-dark: #6d28d9;
    --danger: #ef4444;
    --shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    --radius-xl: 28px;
    --radius-lg: 18px;
    --radius-md: 14px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
}

main,
section,
header,
div,
form {
    min-width: 0;
}

.page {
    min-height: 100vh;
    padding: 32px 20px 56px;
    background: radial-gradient(circle at top right, rgba(124, 58, 237, 0.1), transparent 40%),
                radial-gradient(circle at bottom left, rgba(37, 99, 235, 0.1), transparent 40%);
}

.card,
.status-card,
.brief-form {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.card {
    width: min(100%, 720px);
    margin: 0 auto;
    padding: 32px;
    border-radius: var(--radius-lg);
}

h1,
h2,
h3,
p {
    margin: 0;
}

.brief-shell,
.status-shell {
    width: min(100%, 1120px);
    margin: 0 auto;
}

.brief-hero {
    display: grid;
    gap: 14px;
    max-width: 760px;
    margin-bottom: 24px;
}

.eyebrow,
.step-number,
.brief-progress__label,
.status-meta__label,
.status-result__section-label {
    font-size: 13px;
    line-height: 1.4;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: bold;
}

.brief-hero h1,
.status-card h1,
.card h1 {
    font-size: clamp(32px, 4vw, 54px);
    line-height: 1;
    letter-spacing: -0.04em;
    color: #fff;
    font-family: "Syne", sans-serif;
    font-weight: 800;
}

.hero-copy,
.step-header p,
.status-text,
.card p {
    color: var(--text-soft);
    font-size: 17px;
    line-height: 1.6;
}

.brief-form {
    border-radius: var(--radius-xl);
    padding: 28px;
}

.brief-progress {
    display: grid;
    gap: 12px;
    margin-bottom: 24px;
}

.form-banner {
    margin: 0 0 20px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger);
    line-height: 1.5;
}

.brief-progress__meta {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.brief-progress__step {
    font-size: 15px;
    color: #fff;
    font-weight: bold;
}

.brief-progress__track {
    height: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.brief-progress__fill {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(to right, #a78bfa, #c084fc, #60a5fa);
    border-radius: 999px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(124, 58, 237, 0.5);
}

.brief-step {
    display: none;
    gap: 24px;
}

.brief-step.is-active {
    display: grid;
    animation: fadeIn 0.4s ease-out;
}

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

.step-header {
    display: grid;
    gap: 8px;
}

.step-header h2 {
    font-size: 28px;
    line-height: 1.1;
    color: #fff;
    font-family: "Syne", sans-serif;
    font-weight: 700;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}

.choice-card {
    display: grid;
    gap: 8px;
    padding: 18px;
    border-radius: var(--radius-md);
    background: var(--surface-strong);
    border: 1px solid var(--line);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.choice-card:hover, .choice-card:focus-within {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
}

.choice-card input {
    margin: 0;
    accent-color: var(--accent);
}

.choice-card__title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.choice-card__code {
    font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
    font-size: 12px;
    color: var(--accent);
}

.choice-card__description {
    color: var(--text-soft);
    font-size: 14px;
    line-height: 1.5;
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.field-stack {
    display: grid;
    gap: 14px;
}

.step-header--compact {
    gap: 6px;
}

.step-header--compact h3 {
    font-size: 22px;
    line-height: 1.2;
    color: #fff;
}

.brief-note {
    display: grid;
    gap: 10px;
    padding: 18px;
    border-radius: 16px;
    background: var(--surface-muted);
    border: 1px solid var(--line);
}

.brief-note strong {
    color: #fff;
}

.field {
    display: grid;
    gap: 8px;
}

.field__label {
    font-weight: 600;
    font-size: 15px;
    color: #d1d5db;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="url"],
input[type="file"],
textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-strong);
    padding: 14px 16px;
    color: #fff;
    font: inherit;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
input[type="file"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

textarea {
    resize: vertical;
}

.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-soft);
}

.checkbox-row input[type="checkbox"] {
    accent-color: var(--accent);
    margin-top: 4px;
}

.attachment-list {
    padding: 14px 16px;
    border-radius: 12px;
    background: var(--surface-muted);
    color: var(--text-soft);
}

.attachment-list ul {
    margin: 0;
    padding-left: 20px;
}

.custom-option-list {
    display: grid;
    gap: 12px;
}

.custom-option-item {
    padding: 16px;
    border-radius: 16px;
    background: var(--surface-strong);
    border: 1px solid var(--line);
    transition: border-color 0.3s ease;
}

.custom-option-item:focus-within {
    border-color: rgba(139, 92, 246, 0.5);
}

.custom-option-item__row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: end;
}

.field-error {
    color: var(--danger);
    font-size: 14px;
    line-height: 1.5;
}

.field-error:empty {
    display: none;
}

.step-actions {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.step-actions--end {
    justify-content: flex-end;
}

.button {
    border: none;
    border-radius: 999px;
    padding: 14px 20px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button--primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 25px -5px rgba(124, 58, 237, 0.4);
}

.button--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px -5px rgba(124, 58, 237, 0.5);
    background: var(--accent-dark);
}

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

.button--ghost {
    background: transparent;
    color: #fff;
    border: 1px solid var(--line);
}

.button--ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.button--small {
    width: fit-content;
    padding: 10px 16px;
    font-size: 14px;
}

.status-card {
    display: grid;
    gap: 20px;
    width: min(100%, 820px);
    margin: 0 auto;
    padding: 32px;
    border-radius: var(--radius-xl);
}

.status-error {
    display: grid;
    gap: 8px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-error__title {
    font-weight: 700;
    color: var(--danger);
}

.status-result {
    display: grid;
    gap: 16px;
    padding: 20px;
    border-radius: 20px;
    background: var(--surface-muted);
    border: 1px solid var(--line);
}

.status-result__meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.status-result__item {
    display: grid;
    gap: 8px;
    padding: 16px;
    border-radius: 16px;
    background: var(--surface-strong);
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.status-result__item:hover {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
}

.status-result__item strong {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--accent);
}

.status-result__hint {
    color: var(--text-soft);
    font-size: 14px;
    line-height: 1.5;
}

.status-result__content {
    display: grid;
    gap: 18px;
}

.status-result__notice {
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    color: #fff;
    font-size: 14px;
    line-height: 1.6;
}

.status-result__section {
    display: grid;
    gap: 10px;
}

.status-result__summary {
    color: #fff;
}

.status-result__list {
    margin: 0;
    padding-left: 20px;
    color: var(--text);
    display: grid;
    gap: 8px;
}

.is-hidden {
    display: none;
}

@media (max-width: 800px) {
    .page {
        padding: 20px 14px 40px;
    }

    .brief-form,
    .status-card,
    .card {
        padding: 20px;
    }

    .field-grid,
    .status-result__meta {
        grid-template-columns: 1fr;
    }

    .custom-option-item__row {
        grid-template-columns: 1fr;
    }

    .step-actions {
        flex-direction: column-reverse;
    }

    .button {
        width: 100%;
    }
}