/* ============================================
   SoftKnife Landing Page — Dark Premium Theme
   ============================================ */

:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #111127;
    --bg-card: #161633;
    --bg-window: #0d0d24;
    --border-color: #1e1e3f;
    --text-primary: #e8e8f0;
    --text-secondary: #9191b0;
    --text-dim: #6060805;
    --accent-primary: #6366f1;
    --accent-secondary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #6366f1, #06b6d4);
    --green: #22c55e;
    --red: #ef4444;
    --yellow: #eab308;
    --orange: #f97316;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navigation ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-svg { height: 40px; width: auto; }
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-primary); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-outline:hover { background: rgba(99, 102, 241, 0.1); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover { border-color: var(--text-secondary); color: var(--text-primary); }

.btn-sm { padding: 6px 16px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

/* ---- Hero ---- */
.hero {
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.05) 50%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--accent-primary);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ---- Pain Points ---- */
.problems {
    padding: 100px 0;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.pain-card {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.pain-before {
    padding: 28px 24px;
    background: var(--bg-card);
}

.pain-after {
    padding: 28px 24px;
    background: rgba(34, 197, 94, 0.05);
    border-top: 1px solid rgba(34, 197, 94, 0.15);
}

.pain-emoji {
    font-size: 32px;
    margin-bottom: 12px;
}

.pain-card h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.pain-before h3 { color: var(--text-primary); }
.pain-after h3 { color: var(--green); }

.pain-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- Washer-Dryer Section ---- */
.washer-dryer {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.wd-card {
    text-align: center;
}

.wd-card h2 {
    font-size: clamp(24px, 3.5vw, 36px);
    font-weight: 800;
    margin-bottom: 40px;
    letter-spacing: -1px;
}

.wd-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.wd-item {
    padding: 20px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.wd-item.old {
    opacity: 0.7;
}

.wd-icon { font-size: 28px; margin-bottom: 10px; }

.wd-item h4 {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 6px;
}

.wd-item p {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.wd-divider {
    position: relative;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wd-divider::before {
    content: '';
    position: absolute;
    left: 20%;
    right: 20%;
    height: 1px;
    background: var(--border-color);
}

.wd-divider span {
    position: relative;
    padding: 8px 24px;
    background: var(--bg-secondary);
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-primary);
}

.wd-single {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
}

.wd-score {
    font-size: 80px;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.wd-score span {
    font-size: 32px;
    font-weight: 400;
}

.wd-message {
    text-align: left;
    max-width: 400px;
}

.wd-message h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.wd-message p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- Demo Windows ---- */
.demo-section {
    padding: 40px 0 100px;
}

.demo-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
}

.demo-window {
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-window);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.demo-window-main {
    grid-row: 1 / 3;
}

.window-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.window-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }

.window-title {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.window-body {
    padding: 20px;
}

/* Score Display */
.score-display {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 24px;
}

.score-circle {
    position: relative;
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

.score-circle svg { width: 100%; height: 100%; }

.score-number {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -60%);
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
}

.score-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, 60%);
    font-size: 14px;
    color: var(--text-secondary);
}

.score-details { flex: 1; }

.score-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.status-progress { background: rgba(99, 102, 241, 0.15); color: var(--accent-primary); }

.score-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.score-meta strong { color: var(--text-primary); }

.practice-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.practice-badge.comprehensive { background: rgba(34, 197, 94, 0.15); color: var(--green); }

.practice-text { font-size: 12px; color: var(--text-secondary); margin-left: 8px; }

/* Milestones */
.milestones { display: flex; flex-direction: column; gap: 10px; }

.milestone {
    display: grid;
    grid-template-columns: 20px 1fr 60px 100px;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
}

.milestone-icon { font-size: 14px; text-align: center; }
.milestone.passed .milestone-icon { color: var(--green); }
.milestone.failed .milestone-icon { color: var(--red); }
.milestone.pending .milestone-icon { color: var(--text-secondary); font-size: 8px; }

.milestone-name { font-size: 13px; font-weight: 500; }
.milestone-score { font-size: 12px; color: var(--text-secondary); text-align: right; font-family: monospace; }

.milestone-bar {
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.milestone-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--accent-gradient);
    transition: width 1s ease;
}

.milestone-fill.failed-fill { background: var(--red); }
.milestone-fill.pending-fill { background: var(--text-secondary); }

/* Terminal Window */
.window-terminal {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.8;
}

.terminal-line { white-space: nowrap; }
.term-prompt { color: var(--green); }
.term-cmd { color: var(--text-primary); }
.term-info { color: var(--accent-secondary); }
.term-warn { color: var(--yellow); font-weight: 600; }
.term-ok { color: var(--green); font-weight: 600; }
.term-critical { color: var(--red); font-weight: 600; }
.term-dim { color: var(--text-secondary); }

/* Finding Lifecycle */
.finding-item {
    padding: 14px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
    margin-bottom: 10px;
}

.finding-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.severity-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.severity-badge.critical { background: rgba(239, 68, 68, 0.15); color: var(--red); }
.severity-badge.high { background: rgba(249, 115, 22, 0.15); color: var(--orange); }
.severity-badge.medium { background: rgba(234, 179, 8, 0.15); color: var(--yellow); }

.finding-title { font-size: 13px; font-weight: 500; }

.finding-flow {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.flow-step {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.flow-step.done { background: rgba(34, 197, 94, 0.1); color: var(--green); }
.flow-step.active { background: rgba(99, 102, 241, 0.2); color: var(--accent-primary); border: 1px solid var(--accent-primary); }
.flow-step.verified { background: rgba(34, 197, 94, 0.2); color: var(--green); border: 1px solid var(--green); }
.flow-step.reopened { background: rgba(239, 68, 68, 0.2); color: var(--red); border: 1px solid var(--red); }

.flow-arrow { color: var(--text-secondary); font-size: 12px; }

.finding-meta {
    display: flex;
    gap: 12px;
    font-size: 11px;
    color: var(--text-secondary);
}

.finding-ticket { color: var(--accent-secondary); }

/* ---- Features ---- */
.features {
    padding: 100px 0;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 16px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    padding: 28px 24px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: border-color 0.3s, transform 0.3s;
}

.feature-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- How It Works ---- */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 220px;
    padding: 0 16px;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.step h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.step p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: var(--border-color);
    margin-top: 24px;
    flex-shrink: 0;
}

/* ---- Scoring ---- */
.scoring {
    padding: 100px 0;
}

.dimensions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.dimension-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.dimension-value {
    font-size: 64px;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.dimension-value.risk {
    background: linear-gradient(135deg, var(--orange), var(--red));
    -webkit-background-clip: text;
    background-clip: text;
}

.dimension-value.confidence {
    background: linear-gradient(135deg, var(--green), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
}

.dimension-unit {
    font-size: 24px;
    font-weight: 400;
}

.dimension-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.dimension-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- Capabilities ---- */
.capabilities {
    padding: 100px 0;
}

.capability-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.capability-card {
    display: flex;
    gap: 24px;
    padding: 28px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

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

.capability-number {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.capability-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.capability-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 10px;
}

.capability-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ---- Detail Panels (expandable explanations) ---- */
.detail-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--accent-secondary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 12px;
    transition: all 0.2s;
}

.detail-toggle:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--accent-secondary);
}

.detail-panel {
    display: none;
    margin-top: 16px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.detail-panel.open {
    display: block;
}

.detail-step {
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.detail-step strong {
    color: var(--text-primary);
}

.detail-code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 12px;
    border-radius: 6px;
    margin-top: 6px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.detail-highlight-red {
    color: var(--red);
    font-weight: 700;
}

.detail-highlight-green {
    color: var(--green);
    font-weight: 700;
}

.detail-weights {
    margin-top: 16px;
    font-size: 13px;
}

.detail-weights strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 8px;
}

.detail-weight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.detail-weight-grid span {
    font-family: monospace;
    font-size: 11px;
    color: var(--text-secondary);
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 4px;
}

/* ---- Compliance ---- */
.compliance {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.compliance-card {
    padding: 20px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}

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

.compliance-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.compliance-desc {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: monospace;
}

/* ---- Patent ---- */
.patent-section {
    padding: 60px 0;
}

.patent-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 32px;
    border-radius: 12px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.patent-icon { font-size: 48px; flex-shrink: 0; }

.patent-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.patent-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

.patent-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.patent-item {
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ---- CTA ---- */
.cta-section {
    padding: 100px 0;
    text-align: center;
    background: var(--bg-secondary);
}

.cta-section h2 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 32px;
}

/* ---- Footer ---- */
.footer {
    padding: 60px 0 32px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 12px;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 10px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .compliance-grid { grid-template-columns: repeat(2, 1fr); }
    .pain-grid { grid-template-columns: 1fr; }
    .wd-grid { grid-template-columns: repeat(3, 1fr); }
    .wd-single { flex-direction: column; text-align: center; }
    .wd-message { text-align: center; }
    .demo-grid { grid-template-columns: 1fr; }
    .demo-window-main { grid-row: auto; }
    .dimensions { grid-template-columns: 1fr; }
    .steps { flex-direction: column; align-items: center; }
    .step-connector { width: 2px; height: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-ctas { flex-direction: column; align-items: center; }
    .nav-links { gap: 16px; }
    .score-display { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .wd-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-links a:not(.btn) { display: none; }
    .footer-grid { grid-template-columns: 1fr; }
}