/* ============================================================
   THINK — Engineer Scenario Simulator
   site.css
   ============================================================ */

/* ── ROOT VARIABLES ── */
:root {
    --color-bg: #0d0f14;
    --color-surface: #141720;
    --color-surface-alt: #1c2030;
    --color-border: #252940;
    --color-text: #e2e4ec;
    --color-text-muted: #7b84a0;
    --color-text-faint: #4a5068;
    --color-accent: #5b6af5;
    --color-accent-hover: #6e7cff;
    --color-correct: #22c55e;
    --color-wrong: #ef4444;
    --color-warn: #f59e0b;
    --color-error-log: #f87171;
    --color-warn-log: #fbbf24;
    --color-info-log: #4ade80;
    --font-heading: 'Syne', sans-serif;
    --font-body: 'Lora', serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
}

/* ── BASE ── */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.7;
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* ── NAV ── */
.site-nav {
    background-color: rgba(13, 15, 20, 0.95);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.site-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-text) !important;
    letter-spacing: -0.02em;
}

.site-brand:hover {
    color: var(--color-accent) !important;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--color-text-muted) !important;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    transition: color 0.2s;
}

.navbar-nav .nav-link:hover {
    color: var(--color-text) !important;
    text-decoration: none;
}

.navbar-toggler {
    border-color: var(--color-border);
}

.navbar-toggler-icon {
    filter: invert(1);
}

/* ── FOOTER ── */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    color: var(--color-text-muted);
    font-family: var(--font-heading);
    font-size: 0.875rem;
}

.site-footer a {
    color: var(--color-text-muted);
}

.site-footer a:hover {
    color: var(--color-text);
}

/* ── HERO SECTION ── */
.hero-section {
    padding: 6rem 0 4rem;
    text-align: center;
}

.hero-eyebrow {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 700;
    letter-spacing: -0.015em;
    color: #eceffe;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}

.hero-subheadline {
    font-family: var(--font-body);
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.how-it-works {
    margin-top: 3rem;
}

.step-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    height: 100%;
    transition: border-color 0.2s;
}

.step-card:hover {
    border-color: var(--color-accent);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.5;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.step-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

/* ── BUTTONS ── */
.btn-primary-custom {
    background-color: var(--color-accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.85rem 2.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.01em;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-block;
}

.btn-primary-custom:hover {
    background-color: var(--color-accent-hover);
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-start {
    background-color: var(--color-accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 1.25rem;
    transition: background-color 0.2s;
}

.btn-start:hover {
    background-color: var(--color-accent-hover);
    color: #ffffff;
    text-decoration: none;
}

.btn-outline-custom {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    transition: border-color 0.2s, color 0.2s;
}

.btn-outline-custom:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}

.btn-linkedin {
    background-color: #0a66c2;
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.2s;
}

.btn-linkedin:hover {
    background-color: #0958a8;
    color: #ffffff;
    text-decoration: none;
}

.btn-next {
    background-color: var(--color-accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.85rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.2s;
    margin-top: 1.5rem;
}

.btn-next:hover {
    background-color: var(--color-accent-hover);
    color: #ffffff;
    text-decoration: none;
}

.next-arrow {
    font-size: 1.1rem;
}

/* ── ABOUT SECTION ── */
.about-section {
    padding: 2rem 0 4rem;
}

.about-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    font-style: italic;
}

/* ── SCENARIOS SECTION ── */
.scenarios-section {
    padding: 4rem 0 6rem;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.section-heading {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
}

/* ── SCENARIO CARDS ── */
.scenario-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s, transform 0.2s;
}

.scenario-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.scenario-card--muted {
    opacity: 0.55;
}

.scenario-card--muted:hover {
    transform: none;
    border-color: var(--color-border);
}

.scenario-card-top {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.type-badge {
    background-color: rgba(91, 106, 245, 0.15);
    color: var(--color-accent);
    border: 1px solid rgba(91, 106, 245, 0.3);
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.3rem 0.65rem;
    border-radius: 20px;
}

.coming-soon-badge {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warn);
    border: 1px solid rgba(245, 158, 11, 0.3);
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.3rem 0.65rem;
    border-radius: 20px;
}

.scenario-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

.scenario-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 1.25rem;
}

.scenario-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.meta-label {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-faint);
}

.meta-value {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.difficulty-hard { color: #ef4444; }
.difficulty-medium { color: #f59e0b; }
.difficulty-senior { color: #8b5cf6; }

/* ── PROGRESS BAR ── */
.progress-bar-wrapper {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 61px;
    z-index: 90;
}

.progress-label {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.progress-track {
    height: 6px;
    background-color: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
    border-radius: 3px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── STEP PAGE ── */
.step-page {
    padding: 3rem 0 4rem;
}

.scenario-context {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.context-header {
    margin-bottom: 1.25rem;
}

.context-type-badge {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: 0.4rem;
}

.context-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin: 0;
}

.situation-text {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.75;
    margin-bottom: 1.25rem;
}

/* ── LOG BLOCK ── */
.log-block {
    background-color: #0a0c10;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.9;
}

.log-line {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.log-level {
    font-weight: 500;
    min-width: 40px;
    flex-shrink: 0;
}

.log-message {
    color: var(--color-text-muted);
    word-break: break-all;
}

.log-error .log-level { color: var(--color-error-log); }
.log-error .log-message { color: #fca5a5; }

.log-warn .log-level { color: var(--color-warn-log); }
.log-warn .log-message { color: #fde68a; }

.log-info .log-level { color: var(--color-info-log); }
.log-info .log-message { color: #bbf7d0; }

/* ── QUESTION ── */
.question-block {
    margin-top: 2rem;
}

.question-text {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.4;
}

/* ── OPTIONS ── */
.options-block {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-btn {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    text-align: left;
    color: var(--color-text);
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s, transform 0.1s;
    width: 100%;
    font-size: 0.95rem;
    line-height: 1.6;
}

.option-btn:hover:not(:disabled) {
    border-color: var(--color-accent);
    background-color: var(--color-surface-alt);
    transform: translateX(2px);
}

.option-btn:disabled {
    cursor: default;
}

.option-key {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-accent);
    min-width: 22px;
    flex-shrink: 0;
    padding-top: 0.05rem;
}

.option-text {
    font-family: var(--font-body);
    flex: 1;
}

/* Option states after answer */
.option-btn.option-correct {
    border-color: var(--color-correct);
    background-color: rgba(34, 197, 94, 0.08);
}

.option-btn.option-correct .option-key {
    color: var(--color-correct);
}

.option-btn.option-wrong {
    border-color: var(--color-wrong);
    background-color: rgba(239, 68, 68, 0.08);
}

.option-btn.option-wrong .option-key {
    color: var(--color-wrong);
}

/* ── FEEDBACK ── */
.feedback-block {
    margin-top: 2rem;
}

.explanation-block {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    font-size: 0.975rem;
    color: var(--color-text);
    line-height: 1.75;
}

.senior-quote {
    border-left: 3px solid var(--color-accent);
    margin: 1.25rem 0 0;
    padding: 0.75rem 1.25rem;
    font-family: var(--font-body);
    font-style: italic;
    color: var(--color-text-muted);
    font-size: 0.975rem;
    background-color: rgba(91, 106, 245, 0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── RESULT PAGE ── */
.result-page {
    padding: 4rem 0 5rem;
}

.score-summary {
    padding: 3rem 2rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: 2.5rem;
}

.score-display {
    font-family: var(--font-heading);
    margin-bottom: 1rem;
}

.score-number {
    font-size: 5rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
}

.score-divider {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin: 0 0.25rem;
}

.score-total {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text-muted);
}

.score-percent-badge {
    display: inline-block;
    background-color: rgba(91, 106, 245, 0.15);
    color: var(--color-accent);
    border: 1px solid rgba(91, 106, 245, 0.3);
    border-radius: 30px;
    padding: 0.3rem 1rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

.score-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.score-description {
    font-size: 1rem;
    color: var(--color-text-muted);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.75;
}

/* ── REVIEW CARDS ── */
.review-heading-row {
    border-top: 1px solid var(--color-border);
    padding-top: 2.5rem;
}

.review-heading {
    font-size: 1.5rem;
    font-weight: 700;
}

.review-subheading {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

.review-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    border-left: 3px solid transparent;
}

.review-card--correct {
    border-left-color: var(--color-correct);
}

.review-card--wrong {
    border-left-color: var(--color-wrong);
}

.review-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.review-step-num {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-faint);
}

.review-result {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.875rem;
}

.review-correct {
    color: var(--color-correct);
}

.review-wrong {
    color: var(--color-wrong);
}

.review-question {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.review-answers {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.review-answer-row {
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
    align-items: flex-start;
    padding: 0.6rem 0.875rem;
    border-radius: var(--radius-sm);
}

.answer-correct {
    background-color: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.answer-wrong {
    background-color: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.answer-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    min-width: 100px;
    flex-shrink: 0;
}

.answer-text {
    color: var(--color-text);
    font-size: 0.88rem;
    line-height: 1.5;
}

.review-explanation {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.review-explanation p {
    margin: 0;
}

.review-senior-quote {
    border-left: 3px solid var(--color-accent);
    margin: 0;
    padding: 0.6rem 1rem;
    font-style: italic;
    color: var(--color-text-muted);
    font-size: 0.88rem;
    background-color: rgba(91, 106, 245, 0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── RESULT ACTIONS ── */
.result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 0 3rem;
    }

    .score-number {
        font-size: 3.5rem;
    }

    .score-total {
        font-size: 2rem;
    }

    .score-title {
        font-size: 1.5rem;
    }
}