/* ===== LiftSense Landing & Auth Pages — Design System ===== */
@import url('styles.css');

/* ── Landing Page ── */
.landing-body {
    display: block;
    overflow-x: hidden;
}

.landing-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(11, 17, 32, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

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

.nav-logo { display: flex; align-items: center; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

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

.btn-nav {
    padding: 8px 20px;
    background: var(--gradient-brand);
    color: #fff !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-secondary);
    margin: 5px 0;
    border-radius: 2px;
    transition: var(--transition);
}

/* ── Hero ── */
.hero {
    padding: 140px 24px 80px;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-content { max-width: 560px; }

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid var(--border-active);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    margin-bottom: 48px;
}

.btn-hero-primary {
    padding: 14px 32px;
    background: var(--gradient-brand);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px var(--accent-glow);
}

.btn-hero-secondary {
    padding: 14px 32px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition);
}

.btn-hero-secondary:hover {
    border-color: var(--border-active);
    background: rgba(59, 130, 246, 0.06);
}

.hero-stats { display: flex; gap: 40px; }

.hero-stat { display: flex; flex-direction: column; gap: 4px; }

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

.stat-label { font-size: 0.8rem; color: var(--text-muted); }

/* ── Hero Visual ── */
.hero-visual { position: relative; }

.hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    backdrop-filter: blur(8px);
    margin-bottom: 16px;
    animation: float 4s ease-in-out infinite;
}

.hero-card-secondary {
    animation-delay: 1s;
    margin-left: 40px;
    width: 85%;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 14px;
}

.hero-card-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.hero-card-dot-danger { background: var(--danger); animation: pulse-dot 1.5s infinite; }
.hero-card-dot-safe { background: var(--safe); }

.hero-card-body { display: flex; gap: 20px; align-items: flex-end; }

.hero-card-kpi {
    display: flex;
    flex-direction: column;
}

.hero-kpi-value {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--danger);
    line-height: 1;
}

.hero-kpi-label { font-size: 0.75rem; color: var(--text-muted); }

.hero-card-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 60px;
    flex: 1;
}

.mini-bar {
    flex: 1;
    border-radius: 4px 4px 0 0;
    transition: height 0.3s;
}

.mini-bar.high { background: var(--danger); height: 80%; }
.mini-bar.medium { background: var(--warning); height: 50%; }
.mini-bar.low { background: var(--safe); height: 25%; }

.hero-mini-stats { display: flex; gap: 24px; width: 100%; }

.mini-stat { display: flex; flex-direction: column; gap: 2px; }

.mini-stat-val {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mini-stat-lbl { font-size: 0.72rem; color: var(--text-muted); }

/* ── Section Common ── */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 56px;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all var(--transition);
}

.feature-card:hover {
    border-color: var(--border-active);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-sm);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ── How It Works ── */
.how-it-works { padding: 100px 0; background: rgba(13, 21, 38, 0.5); }

.steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 0 20px;
}

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

.step-connector {
    width: 40px;
    height: 2px;
    background: var(--border);
    margin-top: 28px;
    flex-shrink: 0;
}

/* ── Pricing ── */
.pricing { padding: 100px 0; }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
}

.pricing-card:hover {
    border-color: var(--border-active);
    transform: translateY(-4px);
}

.pricing-featured {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(59,130,246,0.08), var(--bg-card));
    position: relative;
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--gradient-brand);
    color: #fff;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
}

.plan-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.plan-price {
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.plan-price span {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.plan-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 24px;
}

.plan-features {
    list-style: none;
    flex: 1;
    margin-bottom: 28px;
}

.plan-features li {
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.plan-features li:last-child { border-bottom: none; }

.plan-features li::before {
    content: "✓";
    color: var(--safe);
    font-weight: 700;
    margin-right: 8px;
}

.btn-plan {
    display: block;
    text-align: center;
    padding: 12px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition);
}

.btn-plan:hover {
    border-color: var(--accent);
    background: rgba(59,130,246,0.08);
}

.btn-plan-primary {
    display: block;
    text-align: center;
    padding: 12px 0;
    background: var(--gradient-brand);
    color: #fff;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition);
}

.btn-plan-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

/* ── Footer ── */
.landing-footer {
    padding: 60px 0 32px;
    border-top: 1px solid var(--border);
    background: rgba(13, 21, 38, 0.8);
}

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

.footer-brand h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
}

.footer-links h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 4px 0;
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 20px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

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

.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}
.auth-logo img {
    width: 160px;
    height: auto;
    object-fit: contain;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 32px;
}

/* Auth tabs */
.auth-tabs {
    display: flex;
    background: rgba(15, 22, 40, 0.6);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 28px;
}

.auth-tab {
    flex: 1;
    padding: 10px 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition);
    font-family: var(--font);
}

.auth-tab.active {
    background: var(--accent);
    color: #fff;
}

/* Signup mode toggle */
.signup-mode-toggle {
    display: flex;
    background: rgba(15, 22, 40, 0.6);
    border-radius: var(--radius-sm);
    padding: 3px;
    margin-bottom: 20px;
}

.signup-mode-btn {
    flex: 1;
    padding: 8px 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 5px;
    transition: all var(--transition);
    font-family: var(--font);
}

.signup-mode-btn.active {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent);
}

/* Forms */
.auth-form { display: none; }
.auth-form.active { display: block; }

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font);
    transition: all var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    display: none;
    padding: 10px 14px;
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: var(--danger);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.form-error.visible { display: block; }

/* Password strength meter */
.password-strength { height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; margin-top: 8px; }

.strength-bar {
    height: 100%;
    border-radius: 2px;
    transition: all 0.3s ease;
    width: 0;
}

.strength-bar.weak { width: 25%; background: var(--danger); }
.strength-bar.fair { width: 50%; background: var(--warning); }
.strength-bar.good { width: 75%; background: var(--accent); }
.strength-bar.strong { width: 100%; background: var(--safe); }

.password-rules {
    list-style: none;
    margin-top: 8px;
    font-size: 0.75rem;
}

.password-rules li {
    color: var(--text-muted);
    padding: 2px 0;
    transition: color var(--transition);
}

.password-rules li.valid { color: var(--safe); }
.password-rules li.invalid { color: var(--text-muted); }

/* Submit button */
.btn-auth-submit {
    width: 100%;
    padding: 14px 0;
    background: var(--gradient-brand);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font);
    margin-top: 8px;
}

.btn-auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

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

.btn-auth-submit.loading::after {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

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

.auth-footer-link {
    text-align: center;
    margin-top: 20px;
}

.auth-footer-link a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition);
}

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

.session-loaded { display: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title { font-size: 2rem; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    .hero-visual { display: none; }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-sidebar);
        flex-direction: column;
        padding: 16px;
        gap: 12px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .step-connector {
        width: 2px;
        height: 24px;
        margin-top: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
}