/* ==========================================================
   Linecraft AI - Design System Base
   Shared on every page: tokens, reset, nav, footer, lead modal,
   buttons and section typography primitives.
   File: css/base.css
   ========================================================== */

:root {
    --bg-canvas: #fafafa;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f4f5f7;
    --bg-inverse: #050040;

    --ink-heavy: #050040;
    --ink-standard: #1f242e;
    --ink-muted: #5e6678;
    --ink-faint: #9ea5b5;
    --ink-on-dark: #ffffff;

    --border-subtle: #e6e9ef;
    --border-standard: #d6dae3;
    --border-dark: #1b1754;

    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-blue: #2563eb;
    --accent-green: #10b981;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-editorial: 'Instrument Serif', Georgia, serif;
    --font-mono: 'JetBrains Mono', monospace;

    --shadow-figma-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(10, 14, 29, 0.04);
    --shadow-popover: 0 12px 36px -4px rgba(5, 0, 64, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-canvas);
    color: var(--ink-standard);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Shared fade-up reveal, triggered by IntersectionObserver in base.js */
.reveal-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);
}

.reveal-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Subtle Figma Workspace Dot-Grid */
.figma-grid-canvas {
    background-image: radial-gradient(circle, #cbd5e1 0.75px, transparent 0.75px);
    background-size: 24px 24px;
    background-position: center top;
}

.stage-boundary {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================
   Header: Intercom Floating Island Nav
   ========================================================== */
.header-container {
    position: sticky;
    top: 16px;
    z-index: 1000;
    width: 100%;
    padding: 0 20px;
}

.nav-dock {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(214, 218, 227, 0.8);
    border-radius: var(--radius-full);
    padding: 8px 16px 8px 24px;
    box-shadow: 0 4px 20px rgba(5, 0, 64, 0.04);
    position: relative;
}

.nav-brand .logo {
    height: 32px;
    display: block;
}

.nav-links-cluster {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-dropdown {
    position: relative;
}

.dropdown-trigger {
    background: transparent;
    border: none;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink-standard);
    padding: 8px 14px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.dropdown-trigger:hover {
    background: var(--bg-surface-elevated);
    color: var(--ink-heavy);
}

.dropdown-trigger .chevron {
    transition: transform 0.2s ease;
}

.nav-dropdown.active .chevron {
    transform: rotate(180deg);
}

.dropdown-popover {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-popover);
    padding: 8px;
    min-width: 280px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-dropdown.active .dropdown-popover {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.popover-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease;
}

.popover-item:hover {
    background: var(--bg-surface-elevated);
}

.item-icon-box {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #eef2ff;
    flex-shrink: 0;
}

.item-icon-box img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.popover-item strong {
    display: block;
    font-size: 0.85rem;
    color: var(--ink-heavy);
}

.popover-item p {
    font-size: 0.75rem;
    color: var(--ink-muted);
}

.nav-action-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cta-pill-dark {
    background: var(--ink-heavy);
    color: var(--ink-on-dark);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.cta-pill-dark:hover {
    background: #020024;
    transform: translateY(-1px);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 20px;
    height: 2px;
    background: var(--ink-heavy);
    display: block;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-toggle.is-active span:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.mobile-toggle.is-active span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile nav drawer: flattens the dropdowns into an accordion so
   nothing floats off-screen on small viewports. */
@media (max-width: 992px) {
    .nav-links-cluster {
        display: none;
    }

    .nav-links-cluster.mobile-open {
        display: flex;
        flex-direction: column;
        gap: 2px;
        position: absolute;
        top: calc(100% + 10px);
        left: 16px;
        right: 16px;
        background: var(--bg-surface);
        border: 1px solid var(--border-standard);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-popover);
        padding: 10px;
    }

    .nav-links-cluster.mobile-open .nav-dropdown {
        width: 100%;
    }

    .nav-links-cluster.mobile-open .dropdown-trigger {
        width: 100%;
        justify-content: space-between;
    }

    .nav-links-cluster.mobile-open .dropdown-popover {
        position: static;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        box-shadow: none;
        border: none;
        min-width: 0;
        padding: 2px 4px 12px 12px;
        display: none;
    }

    .nav-links-cluster.mobile-open .nav-dropdown.active .dropdown-popover {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }
}

/* ==========================================================
   Shared Button / CTA Primitives
   ========================================================== */
.cta-figma-primary {
    background: var(--ink-heavy);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(5, 0, 64, 0.15);
}

.cta-figma-primary:hover {
    background: #020020;
    transform: translateY(-1px);
}

.cta-figma-secondary {
    background: #ffffff;
    color: var(--ink-standard);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-standard);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.cta-figma-secondary:hover {
    background: var(--bg-surface-elevated);
    border-color: #b9beca;
}

.kbd-hint {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink-faint);
    background: var(--bg-surface-elevated);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-subtle);
}

.full-width {
    width: 100%;
}

/* ==========================================================
   Shared Section Typography Primitives
   ========================================================== */
.section-kicker {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-blue);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.35rem;
    line-height: 1.2;
    font-weight: 700;
    color: var(--ink-heavy);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-lead {
    font-size: 1.05rem;
    color: var(--ink-muted);
    line-height: 1.6;
}

.spec-coordinate-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.spec-coordinate-tag .crosshair {
    color: var(--accent-blue);
    font-size: 0.9rem;
}

.canvas-header-spec {
    text-align: center;
    max-width: 820px;
    margin: 0 auto 56px auto;
}

/* ==========================================================
   Product Hero (reused on product pages: Ikshana, Rishi)
   ========================================================== */
.prod-hero-section {
    padding: 140px 0 0 0;
}

.prod-hero-grid {
    text-align: center;
}

.prod-hero-copy {
    max-width: 760px;
    margin: 0 auto;
}

.prod-hero-title {
    font-size: 2.9rem;
    line-height: 1.15;
    font-weight: 700;
    color: var(--ink-heavy);
    letter-spacing: -0.02em;
    margin-bottom: 18px;
}

.prod-hero-lead {
    font-size: 1.1rem;
    color: var(--ink-muted);
    line-height: 1.6;
    max-width: 620px;
    margin: 0 auto 32px auto;
}

.prod-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* ==========================================================
   Module Explorer (reused on product pages: Ikshana, Rishi)
   ========================================================== */
.module-explorer-section {
    padding: 100px 0;
    background: #ffffff;
    border-top: 1px solid var(--border-subtle);
}

.me-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.me-sidebar {
    display: none;
}

.me-sticky-nav {
    position: sticky;
    top: 100px;
}

.me-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.me-link {
    display: block;
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    border-left: 2px solid transparent;
    font-size: 0.85rem;
    color: var(--ink-muted);
    text-decoration: none;
    transition: all 0.15s ease;
}

.me-link:hover {
    color: var(--ink-heavy);
    background: var(--bg-surface-elevated);
}

.me-link.active {
    color: var(--ink-heavy);
    font-weight: 600;
    border-left-color: var(--accent-blue);
    background: var(--bg-surface-elevated);
}

.me-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.module-card {
    background: #ffffff;
    border: 1px solid var(--border-standard);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-figma-card);
    scroll-margin-top: 130px;
}

.mc-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.mc-icon img {
    width: 22px;
    height: 22px;
}

.mc-title {
    font-size: 1.3rem;
    color: var(--ink-heavy);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.mc-desc {
    font-size: 0.95rem;
    color: var(--ink-muted);
    line-height: 1.6;
    margin-bottom: 20px;
    max-width: 640px;
}

.mc-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin-bottom: 24px;
}

.mc-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--ink-standard);
    font-weight: 500;
}

.mc-features svg {
    color: var(--accent-green);
    flex-shrink: 0;
}

.mc-visual img {
    width: 100%;
    display: block;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.mc-read-more {
    margin-top: 4px;
}

.mc-read-more a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-decoration: none;
}

.mc-read-more a:hover {
    text-decoration: underline;
}

@media (min-width: 1024px) {
    .me-layout {
        grid-template-columns: 240px 1fr;
    }

    .me-sidebar {
        display: block;
    }
}

@media (max-width: 992px) {
    .prod-hero-title {
        font-size: 2.1rem;
    }
}

@media (max-width: 600px) {
    .module-card {
        padding: 28px 20px;
    }
}

/* ==========================================================
   Pre-Footer Conversion Banner (reused on every page)
   ========================================================== */
.pre-footer-banner {
    padding: 40px 0 80px 0;
}

.dark-banner-container {
    background: var(--ink-heavy);
    border-radius: var(--radius-lg);
    padding: 80px 48px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.banner-grid-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
}

.banner-content-stack {
    position: relative;
    z-index: 2;
    max-width: 740px;
    margin: 0 auto;
}

.banner-h2 {
    font-size: 2.8rem;
    line-height: 1.15;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.banner-subtext {
    font-size: 1.05rem;
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 36px;
}

.banner-action-row {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-banner-light {
    background: #ffffff;
    color: var(--ink-heavy);
    border: none;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.cta-banner-light:hover {
    transform: translateY(-1px);
}

.cta-banner-ghost {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    padding: 14px 24px;
    display: flex;
    align-items: center;
}

/* ==========================================================
   Footer
   ========================================================== */
.site-footer {
    background: #ffffff;
    border-top: 1px solid var(--border-subtle);
    padding: 80px 0 40px 0;
}

.footer-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 64px;
    margin-bottom: 60px;
}

.footer-logo {
    height: 28px;
    margin-bottom: 16px;
}

.footer-mantra {
    font-size: 0.95rem;
    color: var(--ink-muted);
    line-height: 1.5;
    margin-bottom: 24px;
}

.trust-pill-badges {
    display: flex;
    gap: 12px;
}

.sprinto-badge {
    height: 56px;
    object-fit: contain;
}

.footer-nav-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-link-group h5 {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--ink-faint);
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.footer-link-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link-group a {
    text-decoration: none;
    color: var(--ink-standard);
    font-size: 0.9rem;
    transition: color 0.15s ease;
}

.footer-link-group a:hover {
    color: var(--accent-blue);
}

.footer-sub-bar {
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--ink-faint);
    flex-wrap: wrap;
    gap: 12px;
}

.sub-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.sub-links a {
    color: var(--ink-faint);
    text-decoration: none;
}

.sub-links a:hover {
    color: var(--ink-standard);
}

/* ==========================================================
   Lead Modal (Intercom Dialog)
   ========================================================== */
.figma-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(5, 0, 64, 0.45);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.figma-modal-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-dialog-box {
    background: #ffffff;
    border: 1px solid var(--border-standard);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-popover);
    width: 90%;
    max-width: 520px;
    padding: 40px;
    position: relative;
    transform: translateY(10px);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.figma-modal-backdrop.open .modal-dialog-box {
    transform: translateY(0);
}

.dialog-close {
    position: absolute;
    top: 20px;
    right: 20px;
    border: none;
    background: none;
    font-size: 1.5rem;
    color: var(--ink-faint);
    cursor: pointer;
}

.dialog-kicker {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-blue);
    display: block;
    margin-bottom: 4px;
}

.dialog-title {
    font-size: 1.65rem;
    color: var(--ink-heavy);
    margin-bottom: 8px;
}

.dialog-desc {
    font-size: 0.9rem;
    color: var(--ink-muted);
    margin-bottom: 24px;
}

.lead-form,
.lead-form-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-block label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink-standard);
}

.input-block input,
.input-block textarea {
    border: 1px solid var(--border-standard);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.9rem;
    background: #ffffff;
    outline: none;
    transition: border-color 0.15s ease;
}

.input-block input:focus,
.input-block textarea:focus {
    border-color: var(--ink-heavy);
}

.dialog-success-view {
    text-align: center;
    padding: 20px 0;
}

.success-glyph {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #dcfce7;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: bold;
    margin: 0 auto 16px auto;
}

/* ==========================================================
   Responsive Adaptations (nav, footer, banner)
   ========================================================== */
@media (max-width: 992px) {
    .footer-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .banner-h2 {
        font-size: 2rem;
    }
}