/* Smart Irrigation — landing page */

.si-landing {
    background: var(--si-body-bg);
    color: var(--si-text);
}

.si-landing-nav {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--si-border);
}

.si-landing-nav .navbar-brand {
    display: flex;
    align-items: center;
    padding: 0;
}

.si-landing-nav .si-logo-wordmark .si-logo-image {
    max-height: 44px;
}

.si-landing-nav .nav-link {
    color: var(--si-text-muted);
    font-weight: 500;
    font-size: 0.925rem;
    padding: 0.5rem 0.85rem !important;
    border-radius: 8px;
    transition: color 0.15s, background 0.15s;
}

.si-landing-nav .nav-link:hover {
    color: var(--si-text);
    background: rgba(15, 23, 42, 0.04);
}

.si-hero {
    position: relative;
    overflow: hidden;
    padding: 4.5rem 0 5rem;
    background: linear-gradient(160deg, #0f172a 0%, #1e293b 45%, #0f766e 100%);
    color: #fff;
}

.si-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 20%, rgba(16, 185, 129, 0.25), transparent),
        radial-gradient(ellipse 50% 40% at 10% 80%, rgba(6, 182, 212, 0.15), transparent);
    pointer-events: none;
}

.si-hero .container {
    position: relative;
    z-index: 1;
}

.si-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.25rem;
}

.si-hero-badge .si-live-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--si-primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.35);
    animation: si-pulse-dot 2s ease-in-out infinite;
}

@keyframes si-pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.si-hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
}

.si-hero h1 span {
    background: linear-gradient(135deg, #34d399, #22d3ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.si-hero-lead {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.75);
    max-width: 32rem;
    line-height: 1.65;
    margin-bottom: 2rem;
}

.si-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.btn-si-hero-outline {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-weight: 600;
    border-radius: var(--si-radius-sm);
    padding: 0.65rem 1.35rem;
    transition: background 0.15s, border-color 0.15s;
}

.btn-si-hero-outline:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.35);
    color: #fff;
}

.si-hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.si-hero-stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.si-hero-stat span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.si-hero-preview {
    position: relative;
}

.si-preview-card {
    background: var(--si-surface);
    border-radius: var(--si-radius);
    box-shadow: var(--si-shadow-lg), 0 25px 60px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    border: 1px solid var(--si-border);
}

.si-preview-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.15rem;
    background: #f8fafc;
    border-bottom: 1px solid var(--si-border);
}

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

.si-preview-body {
    padding: 1.15rem;
}

.si-preview-zone {
    background: #f8fafc;
    border: 1px solid var(--si-border);
    border-radius: var(--si-radius-sm);
    padding: 0.85rem;
    margin-bottom: 0.65rem;
}

.si-preview-zone:last-child {
    margin-bottom: 0;
}

.si-preview-zone-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--si-text);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.si-preview-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    padding: 0.35rem 0;
}

.si-preview-row + .si-preview-row {
    border-top: 1px dashed var(--si-border);
}

.si-preview-value {
    font-weight: 600;
    color: var(--si-primary);
}

.si-preview-valve {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
}

.si-preview-valve.is-open {
    background: rgba(16, 185, 129, 0.12);
    color: var(--si-primary);
}

.si-preview-valve.is-closed {
    background: rgba(100, 116, 139, 0.1);
    color: var(--si-text-muted);
}

.si-section {
    padding: 5rem 0;
}

.si-section-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--si-primary);
    margin-bottom: 0.5rem;
}

.si-section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.si-section-subtitle {
    color: var(--si-text-muted);
    font-size: 1.05rem;
    max-width: 36rem;
    line-height: 1.65;
}

.si-feature-card {
    background: var(--si-surface);
    border: 1px solid var(--si-border);
    border-radius: var(--si-radius);
    padding: 1.75rem;
    height: 100%;
    transition: box-shadow 0.2s, transform 0.2s;
}

.si-feature-card:hover {
    box-shadow: var(--si-shadow-lg);
    transform: translateY(-3px);
}

.si-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--si-primary-soft);
    color: var(--si-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1.15rem;
}

.si-feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.si-feature-card p {
    color: var(--si-text-muted);
    font-size: 0.925rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.si-steps {
    counter-reset: step;
}

.si-step {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.si-step:last-child {
    margin-bottom: 0;
}

.si-step-num {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--si-primary), var(--si-accent));
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.si-step h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.si-step p {
    color: var(--si-text-muted);
    font-size: 0.925rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.si-cta {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #fff;
    border-radius: var(--si-radius);
    padding: 3.5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.si-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 120%, rgba(16, 185, 129, 0.2), transparent);
    pointer-events: none;
}

.si-cta .container {
    position: relative;
    z-index: 1;
}

.si-cta h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.si-cta p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 28rem;
    margin: 0 auto 1.75rem;
    line-height: 1.65;
}

.si-landing-footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--si-border);
    background: var(--si-surface);
}

.si-landing-footer .si-logo-wordmark .si-logo-image {
    max-height: 36px;
}

.si-landing-footer a {
    color: var(--si-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.15s;
}

.si-landing-footer a:hover {
    color: var(--si-primary);
}

.si-contact-card {
    background: var(--si-surface);
    border: 1px solid var(--si-border);
    border-radius: var(--si-radius);
    padding: 2rem;
    box-shadow: var(--si-shadow);
}

.si-contact-info a {
    color: var(--si-text);
    text-decoration: none;
    font-weight: 500;
}

.si-contact-info a:hover {
    color: var(--si-primary);
}

.si-recaptcha-notice a {
    color: var(--si-text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.si-recaptcha-notice a:hover {
    color: var(--si-primary);
}

@media (max-width: 991.98px) {
    .si-hero {
        padding: 3rem 0 3.5rem;
    }

    .si-hero-preview {
        margin-top: 2.5rem;
    }

    .si-section {
        padding: 3.5rem 0;
    }
}