/* ===== SIC-JS INTEGRITY GATE — v1.1 Edition ===== */
/* Design: v1.1 Protocol Style — JetBrains Mono × Deep Navy × Cyan */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg:        #020c18;
    --bg2:       #040d1a;
    --cyan:      #06b6d4;
    --cyan-dim:  rgba(6,182,212,0.12);
    --cyan-glow: rgba(6,182,212,0.3);
    --green:     #10b981;
    --amber:     #f59e0b;
    --red:       #ef4444;
    --white:     #f0f6ff;
    --muted:     rgba(240,246,255,0.45);
    --border:    rgba(6,182,212,0.12);
    --border-h:  rgba(6,182,212,0.4);
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', sans-serif;

    /* Status */
    --color-pass: #10b981;
    --color-pass-soft: rgba(16,185,129,0.12);
    --color-halt: #ef4444;
    --color-halt-soft: rgba(239,68,68,0.12);
    --color-warning: #f59e0b;
    --color-warning-soft: rgba(245,158,11,0.1);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--white);
    line-height: 1.7;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Scanline overlay */
body::after {
    content: '';
    position: fixed; inset: 0; z-index: 9999;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
    pointer-events: none;
}

/* Ambient glow */
body::before {
    content: '';
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(ellipse 70% 40% at 50% 0%, rgba(6,182,212,0.07) 0%, transparent 60%),
        radial-gradient(ellipse 50% 30% at 100% 60%, rgba(6,182,212,0.04) 0%, transparent 50%);
    pointer-events: none; z-index: 0;
}

/* ===== NAV ===== */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 2rem; height: 60px;
    background: rgba(2,12,24,0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 600;
    letter-spacing: 0.12em; color: var(--cyan); text-decoration: none;
    display: flex; align-items: center; gap: 0.5rem;
}

.logo-svg { width: 26px; height: 26px; flex-shrink: 0; }

.nav-links {
    display: flex; align-items: center; gap: 0.25rem; list-style: none;
}
.nav-links a {
    font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.08em;
    color: var(--muted); text-decoration: none; padding: 0.4rem 0.85rem;
    border-radius: 4px; transition: all 0.2s; text-transform: uppercase;
}
.nav-links a:hover { color: var(--white); background: rgba(6,182,212,0.06); }
.nav-links a.active { color: var(--cyan); }
.nav-links a.nav-cta {
    color: var(--cyan); border: 1px solid var(--border-h);
    background: rgba(6,182,212,0.05);
}

.nav-right { display: flex; align-items: center; gap: 0.75rem; }
.nav-badge {
    font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--green);
    display: flex; align-items: center; gap: 0.4rem;
}
.nav-badge::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
    background: var(--green); box-shadow: 0 0 6px var(--green);
    animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* Hamburger */
.hamburger {
    display: none; flex-direction: column; gap: 4px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span { width: 20px; height: 1.5px; background: var(--muted); display: block; transition: all 0.2s; }

/* ===== LAYOUT ===== */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: calc(80px + 2rem) var(--space-lg) var(--space-3xl);
    position: relative; z-index: 1;
}

/* ===== PAGE HEADER ===== */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.page-eyebrow {
    font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.2em;
    text-transform: uppercase; color: var(--cyan); margin-bottom: 0.75rem; opacity: 0.8;
}

.page-header h1 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700; color: var(--white);
    letter-spacing: -0.02em; margin-bottom: 0.75rem;
}

.tagline {
    font-family: var(--font-mono); font-size: 0.78rem;
    color: var(--muted); font-style: italic; letter-spacing: 0.02em;
}

/* Lang switch */
.lang-switch { position: absolute; right: 0; top: 50%; transform: translateY(-50%); }
.lang-toggle { display: none; }
.lang-label {
    display: flex; align-items: center; gap: 0.4rem;
    font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.1em;
    cursor: pointer; color: var(--muted);
    background: rgba(6,182,212,0.06); border: 1px solid var(--border);
    border-radius: 4px; padding: 0.3rem 0.6rem;
    transition: border-color 0.2s;
}
.lang-label:hover { border-color: var(--border-h); }
.lang-text { transition: color 0.2s; }
.lang-toggle:checked ~ .lang-label .lang-text.zh { color: var(--cyan); }
.lang-toggle:not(:checked) ~ .lang-label .lang-text.en { color: var(--cyan); }

/* ===== CARDS ===== */
.input-section,
.result-section {
    background: rgba(4,13,26,0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    position: relative; overflow: hidden;
    transition: border-color var(--transition-base);
}

.input-section:hover,
.result-section:hover {
    border-color: var(--border-h);
}

/* Top accent line */
.input-section::before,
.result-section::before {
    content: '';
    position: absolute; top: 0; left: 50%; transform: translateX(-50%);
    width: 50%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.5;
}

.input-section h2,
.result-header h2 {
    font-size: 1rem; font-weight: 600; color: var(--white);
    margin-bottom: var(--space-sm); letter-spacing: -0.01em;
}

.description {
    color: var(--muted); font-size: 0.85rem;
    margin-bottom: var(--space-xl); line-height: 1.65;
}

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: var(--space-lg); }

.form-group label {
    display: block; font-family: var(--font-mono);
    font-size: 0.82rem; font-weight: 600; color: var(--cyan);
    text-transform: uppercase; letter-spacing: 0.14em;
    margin-bottom: var(--space-sm);
}

textarea, select {
    width: 100%; padding: var(--space-md);
    background: rgba(2,8,16,0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--white); font-family: var(--font-sans);
    font-size: 0.9rem; line-height: 1.6;
    transition: all var(--transition-fast);
}

textarea { resize: vertical; min-height: 130px; }
textarea::placeholder { color: rgba(240,246,255,0.2); font-family: var(--font-mono); font-size: 0.78rem; }

textarea:focus, select:focus {
    outline: none; border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(6,182,212,0.1);
}

select {
    cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2306b6d4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: calc(var(--space-md) * 2 + 16px);
    font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em;
}

select option { background: var(--bg2); }

/* ===== PRIMARY BUTTON ===== */
.btn-primary {
    display: flex; align-items: center; justify-content: center;
    gap: var(--space-sm); width: 100%;
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: 1px solid var(--cyan);
    border-radius: var(--radius-md);
    color: var(--cyan); font-family: var(--font-mono);
    font-size: 0.78rem; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    cursor: pointer; transition: all var(--transition-base);
    position: relative; overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute; inset: 0;
    background: rgba(6,182,212,0.06);
    opacity: 0; transition: opacity var(--transition-base);
}

.btn-primary:hover {
    background: rgba(6,182,212,0.08);
    box-shadow: 0 0 20px rgba(6,182,212,0.2);
    transform: translateY(-1px);
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-icon { font-size: 0.9rem; }

/* ===== RESULT SECTION ===== */
.result-section { animation: fadeSlideUp 0.5s ease; }

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.result-header {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: var(--space-lg); margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

/* ===== DECISION BADGES ===== */
.decision-badge {
    display: inline-flex; align-items: center; gap: var(--space-xs);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono); font-size: 0.82rem;
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em;
}

.decision-badge.pass {
    background: var(--color-pass-soft); color: var(--color-pass);
    border: 1px solid rgba(16,185,129,0.3);
    box-shadow: 0 0 12px rgba(16,185,129,0.15);
}

.decision-badge.halt {
    background: var(--color-halt-soft); color: var(--color-halt);
    border: 1px solid rgba(239,68,68,0.3);
    box-shadow: 0 0 12px rgba(239,68,68,0.15);
    animation: pulseHalt 2.5s ease-in-out infinite;
}

@keyframes pulseHalt {
    0%, 100% { box-shadow: 0 0 12px rgba(239,68,68,0.15); }
    50%       { box-shadow: 0 0 24px rgba(239,68,68,0.3); }
}

/* ===== RISK GRID ===== */
.risk-grid {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md); margin-bottom: var(--space-xl);
}

.risk-card {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--space-md);
    background: rgba(2,8,16,0.6);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}
.risk-card:hover { border-color: var(--border-h); }

.risk-label {
    font-family: var(--font-mono); font-size: 0.82rem;
    font-weight: 500; color: var(--muted);
}

.risk-value {
    font-family: var(--font-mono); font-size: 0.82rem;
    font-weight: 700; padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase; letter-spacing: 0.08em;
}
.risk-value.low     { background: var(--color-pass-soft); color: var(--color-pass); }
.risk-value.medium  { background: var(--color-warning-soft); color: var(--color-warning); }
.risk-value.high    { background: var(--color-halt-soft); color: var(--color-halt); }

/* ===== INFO BOXES ===== */
.reasoning-box {
    background: rgba(2,8,16,0.5);
    border-left: 2px solid var(--cyan);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-lg); margin-bottom: var(--space-lg);
}

.reasoning-box h3 {
    font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600;
    color: var(--cyan); text-transform: uppercase; letter-spacing: 0.14em;
    margin-bottom: var(--space-sm);
}

.reasoning-box p {
    font-size: 0.9rem; color: rgba(240,246,255,0.7); line-height: 1.7;
}

.confirmations-box {
    background: var(--color-warning-soft);
    border-left: 2px solid var(--color-warning);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-lg); margin-bottom: var(--space-lg);
}

.confirmations-box h3 {
    display: flex; align-items: center; gap: var(--space-sm);
    font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600;
    color: var(--color-warning); margin-bottom: var(--space-md);
    text-transform: uppercase; letter-spacing: 0.1em;
}

.confirmations-box ul { list-style: none; margin-bottom: var(--space-md); }
.confirmations-box li {
    font-size: 0.88rem; color: rgba(240,246,255,0.7);
    padding-left: var(--space-lg); margin-bottom: var(--space-sm);
    position: relative;
}
.confirmations-box li::before { content: '—'; position: absolute; left: 0; color: var(--color-warning); }

.recommended-action {
    font-family: var(--font-mono); font-size: 0.82rem; font-style: italic;
    color: var(--muted); padding-top: var(--space-md);
    border-top: 1px solid rgba(245,158,11,0.15);
}

/* ===== SIC-JS STATE LOG ===== */
.sic-js-box {
    background: rgba(2,8,16,0.7);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.sic-js-box h3 {
    font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600;
    color: var(--white); margin-bottom: var(--space-xs);
    text-transform: uppercase; letter-spacing: 0.1em;
}

.sic-js-description {
    font-family: var(--font-mono); font-size: 0.85rem; color: var(--muted);
    margin-bottom: var(--space-md);
}

.sic-js-box pre {
    background: rgba(2,6,12,0.9);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: var(--space-md); overflow: auto; max-height: 240px;
    font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.7;
    color: var(--cyan); margin-bottom: var(--space-md);
}

.btn-secondary {
    display: inline-flex; align-items: center; gap: var(--space-xs);
    padding: 0.3rem 0.75rem;
    background: transparent; border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--muted);
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500;
    letter-spacing: 0.08em; text-transform: uppercase;
    cursor: pointer; transition: all var(--transition-fast);
}
.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); }

/* ===== LOADING STATE ===== */
.loading { text-align: center; padding: var(--space-3xl) var(--space-xl); }

.spinner {
    width: 36px; height: 36px;
    border: 1.5px solid var(--border);
    border-top-color: var(--cyan);
    border-radius: 50%; margin: 0 auto var(--space-lg);
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading p {
    font-family: var(--font-mono); font-size: 0.82rem;
    color: var(--muted); letter-spacing: 0.08em;
}

/* ===== ERROR STATE ===== */
.error-box {
    background: var(--color-halt-soft);
    border-left: 2px solid var(--color-halt);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-lg); text-align: center;
}
.error-box p { font-family: var(--font-mono); color: var(--color-halt); font-size: 0.82rem; }

/* ===== FOOTER ===== */
footer {
    position: relative; z-index: 10; border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
    display: flex; align-items: flex-start; justify-content: space-between;
    flex-wrap: wrap; gap: 2rem; max-width: 720px; margin: 0 auto;
}
.footer-left { max-width: 480px; }
.footer-left p { font-size: 0.85rem; color: var(--muted); line-height: 1.7; margin-bottom: 0.4rem; }
.footer-credit {
    font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
    color: rgba(240,246,255,0.2); margin-top: 0.75rem;
}
.footer-links-col { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links-col a {
    font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.08em;
    color: var(--muted); text-decoration: none; transition: color 0.2s;
}
.footer-links-col a:hover { color: var(--cyan); }

/* ===== UTILITIES ===== */
.hidden { display: none !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
    .container { padding: calc(80px + 1rem) var(--space-md) var(--space-2xl); }
    .page-header h1 { font-size: 1.4rem; }
    .input-section, .result-section { padding: var(--space-lg); }
    .risk-grid { grid-template-columns: 1fr; }
    .result-header { flex-direction: column; align-items: flex-start; gap: var(--space-md); }
    .nav-links { display: none; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: fixed; top: 60px; left: 0; right: 0;
        background: rgba(2,12,24,0.97);
        padding: 1rem; gap: 0.25rem;
        border-bottom: 1px solid var(--border); z-index: 99;
    }
    .hamburger { display: flex; }
    footer { flex-direction: column; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-h); }

::selection { background: rgba(6,182,212,0.3); color: var(--white); }