/* ===== CYBERSHIELD - STYLES ===== */

:root {
    --bg: #f6f8fb;
    --bg-alt: #eef2f7;
    --surface: #ffffff;
    --surface-2: #f3f6fa;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-muted: #5b6678;
    --primary: #0f9d76;
    --primary-strong: #0b7d5e;
    --primary-soft: #e3f6ef;
    --accent: #2563eb;
    --safe: #0f9d76;
    --safe-soft: #e3f6ef;
    --warn: #c27803;
    --warn-soft: #fff4dc;
    --danger: #dc2626;
    --danger-soft: #fdecec;
    --whatsapp: #1fa855;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 10px 30px -12px rgba(15, 23, 42, 0.18), 0 2px 6px rgba(15, 23, 42, 0.05);
    --radius: 16px;
    --radius-sm: 10px;
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --gutter: 16px;
    --nav-h: 60px;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0b1220;
        --bg-alt: #0f1829;
        --surface: #131d31;
        --surface-2: #1a263d;
        --border: #24324c;
        --text: #e8eef8;
        --text-muted: #9aa8bf;
        --primary: #22c597;
        --primary-strong: #3ad7aa;
        --primary-soft: rgba(34, 197, 151, 0.14);
        --accent: #60a5fa;
        --safe: #22c597;
        --safe-soft: rgba(34, 197, 151, 0.14);
        --warn: #f5b83d;
        --warn-soft: rgba(245, 184, 61, 0.14);
        --danger: #f87171;
        --danger-soft: rgba(248, 113, 113, 0.14);
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow: 0 16px 40px -16px rgba(0, 0, 0, 0.6), 0 2px 6px rgba(0, 0, 0, 0.25);
        color-scheme: dark;
    }
}

:root[data-theme="dark"] {
    --bg: #0b1220;
    --bg-alt: #0f1829;
    --surface: #131d31;
    --surface-2: #1a263d;
    --border: #24324c;
    --text: #e8eef8;
    --text-muted: #9aa8bf;
    --primary: #22c597;
    --primary-strong: #3ad7aa;
    --primary-soft: rgba(34, 197, 151, 0.14);
    --accent: #60a5fa;
    --safe: #22c597;
    --safe-soft: rgba(34, 197, 151, 0.14);
    --warn: #f5b83d;
    --warn-soft: rgba(245, 184, 61, 0.14);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.14);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 16px 40px -16px rgba(0, 0, 0, 0.6), 0 2px 6px rgba(0, 0, 0, 0.25);
    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + 12px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
a { color: var(--accent); }
img { max-width: 100%; display: block; }
button { font: inherit; }

:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    border-radius: 6px;
}

.icon {
    width: 1em;
    height: 1em;
    flex: none;
    fill: currentColor;
    vertical-align: -0.125em;
}

.visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: absolute;
    left: 8px; top: -60px;
    padding: 8px 14px;
    background: var(--text);
    color: var(--bg);
    border-radius: 8px;
    z-index: 100;
}
.skip-link:focus { top: 8px; }

.container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 max(var(--gutter), env(safe-area-inset-left));
}

.container-narrow { max-width: 760px; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 12px;
    border: 1px solid transparent;
    font-weight: 700;
    font-size: 0.98rem;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: translateY(1px); }
.btn-sm { min-height: 38px; padding: 0 14px; font-size: 0.9rem; }
.btn-block { width: 100%; }

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 16px -6px var(--primary);
}
.btn-primary:hover { background: var(--primary-strong); }

.btn-ghost {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface-2); }

.btn-whatsapp { background: var(--whatsapp); color: #fff; }
.btn-whatsapp:hover { filter: brightness(1.05); }

/* ===== NAV ===== */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    height: var(--nav-h);
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 800;
    font-size: 1.1rem;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 1rem;
}

.nav-links {
    display: none;
    gap: 24px;
    margin-left: auto;
}
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}
.nav-links a:hover { color: var(--text); }

.nav-github { margin-left: auto; }
.nav-github span { display: none; }

/* ===== HERO ===== */
.hero {
    padding: 28px 0 48px;
    background:
        radial-gradient(900px 400px at 10% -10%, color-mix(in srgb, var(--primary) 16%, transparent), transparent 70%),
        radial-gradient(700px 400px at 100% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
}

.hero-grid {
    display: grid;
    gap: 28px;
    align-items: start;
}

.hero-copy h1 {
    font-size: clamp(1.9rem, 6.5vw, 3.3rem);
    font-weight: 800;
    margin: 12px 0 14px;
}

.accent {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lead {
    font-size: clamp(1rem, 2.4vw, 1.15rem);
    color: var(--text-muted);
    max-width: 34em;
}

.trust-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}
.trust-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
}
.trust-list .icon {
    width: 30px; height: 30px;
    padding: 8px;
    border-radius: 8px;
    background: var(--primary-soft);
    color: var(--primary);
}

/* ===== CHECKER ===== */
.checker {
    padding: 18px;
    box-shadow: var(--shadow);
}

.checker-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}
.checker-head h2 { font-size: 1.2rem; }

.tabs {
    display: inline-flex;
    padding: 4px;
    border-radius: 12px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}
.tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 38px;
    padding: 0 14px;
    border: 0;
    border-radius: 9px;
    background: transparent;
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
}
.tab.is-active {
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-sm);
}

.dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 210px;
    padding: 24px 16px;
    text-align: center;
    border: 2px dashed color-mix(in srgb, var(--primary) 45%, var(--border));
    border-radius: 14px;
    background: color-mix(in srgb, var(--primary-soft) 60%, var(--surface));
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s, transform 0.15s;
}
.dropzone:hover { border-color: var(--primary); }
.dropzone.is-dragover {
    border-color: var(--primary);
    background: var(--primary-soft);
    transform: scale(1.01);
}
.dropzone:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }

.dropzone-icon {
    display: grid;
    place-items: center;
    width: 56px; height: 56px;
    margin-bottom: 6px;
    border-radius: 16px;
    background: var(--primary);
    color: #fff;
    font-size: 1.4rem;
    box-shadow: 0 8px 20px -8px var(--primary);
}
.dropzone-title { font-weight: 700; font-size: 1.05rem; }
.dropzone-hint { color: var(--text-muted); font-size: 0.88rem; }

kbd {
    font-family: inherit;
    font-size: 0.8em;
    padding: 1px 6px;
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 5px;
    background: var(--surface);
}

#message-input {
    display: block;
    width: 100%;
    min-height: 160px;
    margin-bottom: 12px;
    padding: 14px;
    resize: vertical;
    font: inherit;
    font-size: 16px; /* stops iOS zoom on focus */
    color: var(--text);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 12px;
}
#message-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.examples { margin-top: 14px; }
.examples-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 36px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }

/* progress */
.progress-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 20px 4px;
    text-align: center;
}

.scan-preview {
    position: relative;
    width: min(220px, 70%);
    max-height: 260px;
    overflow: hidden;
    border-radius: 12px;
    border: 1px solid var(--border);
}
.scan-preview img { width: 100%; height: auto; object-fit: cover; }
.scan-line {
    position: absolute;
    left: 0; right: 0;
    height: 3px;
    background: var(--primary);
    box-shadow: 0 0 16px 4px var(--primary);
    animation: scan 1.8s ease-in-out infinite;
}
@keyframes scan {
    0% { top: 0; }
    50% { top: calc(100% - 3px); }
    100% { top: 0; }
}

.spinner {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 4px solid var(--primary-soft);
    border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.progress-label { font-weight: 600; }
.progress-bar {
    width: 100%;
    max-width: 360px;
    height: 8px;
    border-radius: 99px;
    background: var(--surface-2);
    overflow: hidden;
}
.progress-bar span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s ease;
}

/* ===== RESULT ===== */
.verdict {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 14px;
    padding: 16px;
    border-radius: 14px;
    background: var(--level-soft, var(--surface-2));
    border: 1px solid color-mix(in srgb, var(--level, var(--border)) 35%, transparent);
}
.verdict.is-danger { --level: var(--danger); --level-soft: var(--danger-soft); }
.verdict.is-warning { --level: var(--warn); --level-soft: var(--warn-soft); }
.verdict.is-safe { --level: var(--safe); --level-soft: var(--safe-soft); }

.verdict-icon {
    display: grid;
    place-items: center;
    width: 48px; height: 48px;
    border-radius: 14px;
    background: var(--level, var(--text-muted));
    color: #fff;
    font-size: 1.3rem;
}
.verdict-text { display: flex; flex-direction: column; min-width: 0; }
.verdict-label {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--level, var(--text));
    letter-spacing: 0.02em;
}
.verdict-sub { font-size: 0.92rem; color: var(--text); }

.gauge { position: relative; width: 64px; height: 64px; }
.gauge svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.gauge circle { fill: none; stroke-width: 3.6; }
.gauge-track { stroke: color-mix(in srgb, var(--level, var(--border)) 20%, transparent); }
.gauge-value {
    stroke: var(--level, var(--primary));
    stroke-linecap: round;
    stroke-dasharray: 0 100;
    transition: stroke-dasharray 0.8s ease;
}
.gauge-number {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 1rem;
    color: var(--level, var(--text));
}

.result-heading { font-size: 1rem; margin: 18px 0 10px; }

.reasons {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 8px;
}
.reason {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    padding: 12px;
    border-radius: 12px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}
.reason-icon {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border-radius: 10px;
    font-size: 0.9rem;
    background: var(--danger-soft);
    color: var(--danger);
}
.reason.is-mid .reason-icon { background: var(--warn-soft); color: var(--warn); }
.reason.is-ok .reason-icon { background: var(--safe-soft); color: var(--safe); }
.reason-title { font-weight: 700; font-size: 0.95rem; }
.reason-desc { font-size: 0.9rem; color: var(--text-muted); }

.advice {
    margin-top: 14px;
    padding: 14px;
    border-radius: 12px;
    border-left: 4px solid var(--accent);
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
    font-size: 0.93rem;
}
.advice strong { display: block; margin-bottom: 4px; }
.advice ul { margin: 0; padding-left: 18px; }

.extracted {
    margin-top: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}
.extracted summary {
    padding: 12px 14px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.92rem;
}
.extracted p {
    padding: 0 14px 14px;
    max-height: 200px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.result-actions {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

/* ===== SECTIONS ===== */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }

.section-head {
    max-width: 640px;
    margin-bottom: 28px;
}
.section-head h2 {
    font-size: clamp(1.5rem, 4.5vw, 2.2rem);
    font-weight: 800;
    margin: 8px 0 10px;
}
.section-head p { color: var(--text-muted); }

.modus-grid {
    display: grid;
    gap: 12px;
}
.modus-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    padding: 16px;
}
.modus-icon {
    display: grid;
    place-items: center;
    width: 42px; height: 42px;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 1.05rem;
}
.modus-card h3 { font-size: 1rem; margin-bottom: 4px; }
.modus-card p { font-size: 0.9rem; color: var(--text-muted); }

.steps {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: grid;
    gap: 12px;
}
.step { padding: 20px; }
.step-num {
    display: grid;
    place-items: center;
    width: 36px; height: 36px;
    margin-bottom: 12px;
    border-radius: 50%;
    background: var(--text);
    color: var(--bg);
    font-weight: 800;
}
.step h3 { font-size: 1.05rem; margin-bottom: 6px; }
.step p { color: var(--text-muted); font-size: 0.93rem; }

.help {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    padding: 20px;
    border-color: color-mix(in srgb, var(--danger) 30%, var(--border));
}
.help-icon {
    display: grid;
    place-items: center;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--danger-soft);
    color: var(--danger);
    font-size: 1.2rem;
}
.help h3 { font-size: 1.05rem; margin-bottom: 8px; }
.help ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 0.93rem; }

.faq { display: grid; gap: 10px; }
.faq details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
}
.faq summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 16px;
    font-weight: 700;
    cursor: pointer;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: '+';
    flex: none;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--text-muted);
    transition: transform 0.2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 16px 16px; color: var(--text-muted); }

/* ===== FOOTER ===== */
.footer {
    padding: 32px 0 calc(32px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border);
}
.footer-inner {
    display: grid;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.footer a { font-weight: 600; text-decoration: none; }

/* ===== TOAST ===== */
.toast {
    position: fixed;
    left: 50%;
    bottom: calc(20px + env(safe-area-inset-bottom));
    transform: translate(-50%, calc(100% + 40px));
    visibility: hidden;
    max-width: calc(100% - 32px);
    padding: 12px 18px;
    border-radius: 12px;
    background: var(--text);
    color: var(--bg);
    font-weight: 600;
    font-size: 0.92rem;
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, visibility 0.25s;
    z-index: 100;
}
.toast.is-visible { transform: translate(-50%, 0); visibility: visible; }
.toast.is-error { background: var(--danger); color: #fff; }

/* ===== RESPONSIVE ===== */

/* large phones */
@media (min-width: 480px) {
    .result-actions { grid-template-columns: 1fr 1fr; }
    .result-actions .btn-primary { grid-column: 1 / -1; }
    .checker { padding: 22px; }
}

/* tablets and car displays */
@media (min-width: 640px) {
    :root { --gutter: 24px; }
    .nav-github span { display: inline; }
    .modus-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .trust-list { grid-template-columns: 1fr; }
    .footer-inner {
        grid-template-columns: auto 1fr auto;
        align-items: center;
        gap: 20px;
    }
}

@media (min-width: 820px) {
    .nav-links { display: flex; }
    .nav-github { margin-left: 0; }
    .hero { padding: 48px 0 72px; }
    .section { padding: 80px 0; }
}

/* desktop: copy on the left, checker on the right */
@media (min-width: 1000px) {
    :root { --gutter: 32px; }
    .hero-grid {
        grid-template-columns: 1fr 1.05fr;
        grid-template-rows: auto auto;
        column-gap: 56px;
        row-gap: 24px;
    }
    .hero-copy { grid-column: 1; grid-row: 1; align-self: end; }
    .trust-list { grid-column: 1; grid-row: 2; align-self: start; }
    .checker { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
    .checker { padding: 26px; }
    .modus-grid { grid-template-columns: repeat(3, 1fr); }
}

/* short landscape screens (phones sideways, car head units) */
@media (max-height: 520px) and (orientation: landscape) {
    .hero { padding: 20px 0 32px; }
    .dropzone { min-height: 150px; }
    .trust-list { display: none; }
    .lead { font-size: 0.98rem; }
}

@media (max-height: 520px) and (orientation: landscape) and (min-width: 760px) {
    .hero-grid {
        grid-template-columns: 0.9fr 1.1fr;
        gap: 28px;
        align-items: start;
    }
    .hero-copy h1 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); }
    .checker { padding: 16px; }
    .checker-head { margin-bottom: 10px; }
}

/* very small phones */
@media (max-width: 360px) {
    :root { --gutter: 12px; }
    .tab { padding: 0 10px; }
    .verdict { grid-template-columns: auto 1fr; }
    .gauge { grid-column: 1 / -1; justify-self: start; width: 56px; height: 56px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}