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

:root {
    --bg-base:        #080c10;
    --bg-panel:       #0f1720;
    --bg-card:        #162030;
    --bg-input:       #1c2940;
    --border:         #1e3350;
    --border-focus:   #38bdf8;
    --text-primary:   #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted:     #475569;
    --accent-blue:    #38bdf8;
    --accent-violet:  #818cf8;
    --accent-grad:    linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    --danger:         #f43f5e;
    --success:        #34d399;
    --warning:        #fbbf24;
    --radius-sm:      6px;
    --radius-md:      12px;
    --radius-lg:      18px;
    --transition:     0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --font-ui:        'Inter', system-ui, sans-serif;
    --font-brand:     'Outfit', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-ui);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ── Reusable ── */
.glass {
    background: rgba(15, 23, 32, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(30, 51, 80, 0.5);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: var(--accent-grad);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(56, 189, 248, 0.35);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: transparent;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.btn-ghost:hover {
    border-color: var(--accent-blue);
    background: rgba(56, 189, 248, 0.05);
}

.btn-lg { padding: 14px 32px; font-size: 15px; }

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

.section-header h2 {
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    line-height: 1.2;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.6;
}

/* ── Scroll Animations ── */
.anim-fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.anim-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Navigation ── */
#landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(8, 12, 16, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 51, 80, 0.3);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: 20px;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-logo { width: 28px; height: 28px; flex-shrink: 0; }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn svg { width: 24px; height: 24px; }
.mobile-menu-close { display: none; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-links a {
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-links a:not(.nav-btn-primary):not(.nav-btn-secondary) { color: var(--text-secondary); }
.nav-links a:not(.nav-btn-primary):not(.nav-btn-secondary):hover { color: var(--text-primary); }

.nav-btn-secondary {
    color: var(--text-primary) !important;
    border: 1px solid var(--border);
}

.nav-btn-secondary:hover { border-color: var(--accent-blue) !important; }

.nav-btn-primary {
    background: var(--accent-grad);
    color: #fff !important;
    font-weight: 600 !important;
}

.nav-btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
}

/* ═══════════════════════════════════════════════════════ HERO ═══ */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 24px 60px;
    overflow: hidden;
}

.hero-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(56, 189, 248, 0.07) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 30%, rgba(129, 140, 248, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    animation: float 12s ease-in-out infinite;
}

.hero-orb-1 {
    width: 400px;
    height: 400px;
    background: rgba(56, 189, 248, 0.08);
    top: 10%;
    left: 10%;
}

.hero-orb-2 {
    width: 350px;
    height: 350px;
    background: rgba(129, 140, 248, 0.06);
    bottom: 15%;
    right: 10%;
    animation-delay: -6s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, -20px); }
}

.hero-inner {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hero-badge {
    display: inline-flex;
    width: fit-content;
    padding: 6px 16px;
    border-radius: 99px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    color: var(--accent-blue);
}

.hero-title {
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: clamp(2.8rem, 5.5vw, 4.2rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-note {
    font-size: 13px;
    color: var(--text-muted);
}

/* ── Laptop Mockup ── */
.hero-visual {
    display: flex;
    justify-content: center;
    perspective: 1200px;
}

.laptop-frame {
    width: 100%;
    max-width: 520px;
}

.laptop-screen {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    overflow: hidden;
}

.screen-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(15, 23, 32, 0.8);
    border-bottom: 1px solid var(--border);
}

.toolbar-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    opacity: 0.4;
}

.toolbar-dot:first-child { background: #f43f5e; opacity: 0.7; }
.toolbar-dot:nth-child(2) { background: #fbbf24; opacity: 0.7; }
.toolbar-dot:nth-child(3) { background: #34d399; opacity: 0.7; }

.toolbar-label {
    margin-left: 8px;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

.screen-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 240px;
}

.screen-transcript {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.5;
}

.transcript-line { transition: all 0.3s ease; }
.transcript-line.faded { color: var(--text-muted); }
.transcript-line.active { color: var(--text-primary); }

.highlight-ref {
    color: var(--accent-blue);
    font-weight: 600;
    background: rgba(56, 189, 248, 0.1);
    padding: 1px 5px;
    border-radius: 3px;
}

.screen-projector {
    text-align: center;
    padding: 20px 16px;
    background: var(--bg-base);
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: var(--radius-sm);
}

.projector-verse-ref {
    font-family: var(--font-brand);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.projector-verse-text {
    font-size: 14px;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
}

.laptop-base {
    height: 14px;
    background: linear-gradient(180deg, #1a2332 0%, #141c28 100%);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    border: 1px solid var(--border);
    border-top: none;
    position: relative;
}

.laptop-base::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--text-muted);
    opacity: 0.2;
    border-radius: 2px;
}

/* ═══════════════════════════════════════════════════ FEATURES ═══ */
#features {
    padding: 80px 24px;
    position: relative;
}

/* ── Sticky Showcase ── */
.showcase {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.showcase-sticky {
    position: sticky;
    top: 100px;
}

.showcase-screen {
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: all 0.4s ease;
}

.showcase-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.showcase-visual {
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: opacity 0.3s ease;
}

.sv-transcript {
    font-size: 14px;
    line-height: 1.6;
    padding: 16px;
    background: rgba(8, 12, 16, 0.6);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.sv-faded { color: var(--text-muted); }

.sv-ref {
    color: var(--accent-blue);
    font-weight: 600;
    background: rgba(56, 189, 248, 0.08);
    padding: 1px 4px;
    border-radius: 3px;
}

.sv-arrow {
    display: flex;
    justify-content: center;
    color: var(--text-muted);
}

.sv-verse {
    text-align: center;
    padding: 16px;
    background: rgba(8, 12, 16, 0.6);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(56, 189, 248, 0.15);
}

.sv-verse-ref {
    font-family: var(--font-brand);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.sv-verse-text {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.5;
}

.showcase-scroll {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.showcase-step {
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all 0.3s ease;
    cursor: default;
}

.showcase-step.active {
    background: rgba(15, 23, 32, 0.5);
    border-color: rgba(56, 189, 248, 0.15);
}

.showcase-step-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.showcase-step-icon svg { width: 20px; height: 20px; }

.showcase-step h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}

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

/* ── Tool Grid ── */
.tool-grid {
    max-width: 1000px;
    margin: 64px auto 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.tool-heading {
    font-family: var(--font-brand);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.tool-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    transition: all 0.25s ease;
}

.tool-item:hover {
    border-color: rgba(56, 189, 248, 0.2);
    transform: translateX(4px);
}

.tool-icon {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-icon svg { width: 18px; height: 18px; }

.tool-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.tool-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ── Icon Colors ── */
.auto-detect-icon { background: rgba(56, 189, 248, 0.1); color: var(--accent-blue); }
.live-transcribe-icon { background: rgba(129, 140, 248, 0.1); color: var(--accent-violet); }
.semantic-icon { background: rgba(52, 211, 153, 0.1); color: var(--success); }
.dual-screen-icon { background: rgba(251, 191, 36, 0.1); color: var(--warning); }
.multi-trans-icon { background: rgba(244, 63, 94, 0.1); color: var(--danger); }
.confidence-icon { background: rgba(251, 191, 36, 0.1); color: #fbbf24; }
.image-upload-icon { background: rgba(244, 114, 182, 0.1); color: #f472b6; }
.multi-display-icon { background: rgba(45, 212, 191, 0.1); color: #2dd4bf; }
.manual-search-icon { background: rgba(56, 189, 248, 0.1); color: var(--accent-blue); }
.chapter-browser-icon { background: rgba(167, 139, 250, 0.1); color: #a78bfa; }
.verse-nav-icon { background: rgba(251, 146, 60, 0.1); color: #fb923c; }

/* ═══════════════════════════════════════════════════ OFFLINE ═══ */
#offline {
    position: relative;
    padding: 100px 24px;
    text-align: center;
    overflow: hidden;
}

.offline-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 50% at 50% 50%, rgba(52, 211, 153, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 30% 60%, rgba(56, 189, 248, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.offline-inner {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
}

.offline-badge {
    display: inline-flex;
    padding: 6px 16px;
    border-radius: 99px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.2);
    color: var(--success);
    margin-bottom: 24px;
}

.offline-title {
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    margin-bottom: 16px;
}

.offline-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 36px;
}

.offline-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.offline-feat {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    background: rgba(15, 23, 32, 0.5);
    border: 1px solid rgba(52, 211, 153, 0.15);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.offline-feat-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
}

.offline-feat-icon svg { width: 16px; height: 16px; }

/* ═══════════════════════════════════════════════ HOW IT WORKS ═══ */
#how-it-works {
    padding: 80px 24px;
}

.timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.timeline-line {
    position: absolute;
    left: 19px;
    top: 20px;
    bottom: 20px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-blue), var(--accent-violet));
    opacity: 0.2;
    border-radius: 1px;
}

.timeline-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 16px 0;
    position: relative;
}

.timeline-dot {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-panel);
    border: 2px solid var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: 14px;
    color: var(--accent-blue);
    position: relative;
    z-index: 1;
}

.timeline-card {
    flex: 1;
    padding: 20px 24px;
    border-radius: var(--radius-md);
}

.timeline-card h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}

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

/* ═════════════════════════════════════════════════ DOWNLOAD ═══ */
#download {
    padding: 80px 24px;
}

.download-row {
    display: flex;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
    justify-content: center;
    flex-wrap: wrap;
}

.download-card {
    border-radius: var(--radius-md);
    padding: 32px 24px;
    flex: 1;
    min-width: 220px;
    max-width: 280px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all var(--transition);
}

.download-card:hover {
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.download-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon svg { width: 26px; height: 26px; }
.download-card h3 { font-size: 17px; font-weight: 700; }
.download-arch { font-size: 12px; color: var(--text-muted); }

.download-btn {
    width: 100%;
    margin-top: 4px;
}

.download-detail {
    font-size: 12px;
    color: var(--text-muted);
}

.download-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 24px;
}

.download-note a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
}

.download-note a:hover { text-decoration: underline; }

/* ═════════════════════════════════════════════════════ CTA ═══ */
#cta {
    position: relative;
    padding: 100px 24px;
    text-align: center;
    overflow: hidden;
}

.cta-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 50%, rgba(56, 189, 248, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 60% 40%, rgba(129, 140, 248, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.cta-inner {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.cta-inner h2 {
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: clamp(1.8rem, 3vw, 2.2rem);
}

.cta-inner p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 8px;
}

/* ═══════════════════════════════════════════════════ FOOTER ═══ */
#landing-footer {
    border-top: 1px solid var(--border);
    padding: 40px 24px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: 16px;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-logo { width: 24px; height: 24px; }
.footer-tagline { font-size: 13px; color: var(--text-secondary); }
.footer-copy { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ── Auth Pages ── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.auth-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: 18px;
    background: var(--accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.auth-logo svg,
.auth-logo img { width: 26px; height: 26px; }

.auth-title {
    font-family: var(--font-brand);
    font-weight: 900;
    font-size: 24px;
    text-align: center;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    text-align: center;
    margin-top: -12px;
}

.auth-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 14px;
    padding: 12px 14px;
    outline: none;
    transition: border-color var(--transition);
}

.form-group input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.form-group input::placeholder { color: var(--text-muted); }

.auth-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-grad);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.auth-btn:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
}

.auth-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.auth-error {
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--danger);
    font-size: 13px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.auth-error.hidden { display: none; }

.auth-alt { font-size: 13px; color: var(--text-secondary); }

.auth-alt a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
}

.auth-alt a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════ RESPONSIVE ═══ */
@media (max-width: 768px) {
    input, select, textarea { font-size: 16px !important; }

    .mobile-menu-btn { display: block; }

    .mobile-menu-close {
        display: block;
        align-self: flex-end;
        background: none;
        border: none;
        color: var(--text-secondary);
        cursor: pointer;
        padding: 4px;
        margin-bottom: 4px;
    }

    .mobile-menu-close svg { width: 24px; height: 24px; }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        right: 24px;
        left: auto;
        width: 260px;
        background: var(--bg-panel);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        flex-direction: column;
        padding: 20px;
        gap: 12px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    }

    .nav-links.active { display: flex; }

    .nav-links a:not(.nav-btn-primary):not(.nav-btn-secondary) {
        display: block;
        font-size: 16px;
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-btn-primary, .nav-btn-secondary {
        width: 100%;
        text-align: center;
        margin-top: 8px;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text { align-items: center; }
    .hero-subtitle { max-width: 100%; }
    .hero-actions { justify-content: center; }

    .hero-visual { order: -1; }
    .laptop-frame { max-width: 380px; }

    .showcase {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .showcase-sticky {
        position: relative;
        top: 0;
    }

    .tool-grid { grid-template-columns: 1fr; gap: 32px; }

    .offline-features { flex-direction: column; align-items: center; }

    .timeline-line { left: 19px; }

    .cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .cta-actions .btn-primary,
    .cta-actions .btn-ghost {
        width: 100%;
        text-align: center;
    }

    .download-row { flex-direction: column; align-items: center; }
    .download-card { max-width: 100%; }
}

@media (min-width: 769px) {
    .auth-logo {
        flex-direction: row;
        gap: 12px;
        font-size: 28px;
    }

    .auth-logo svg,
    .auth-logo img {
        width: 44px;
        height: 44px;
    }
}