/* =============================================================
   SuiteState — Landing page stylesheet
   Design philosophy: editorial, refined, confident.
   Inspired by Stripe / Linear / Vercel official pages —
   anchored to a B2B audience that values clarity over flash.
   ============================================================= */

/* ----- Design tokens ----- */
:root {
    /* Brand — official SuiteState colors */
    --teal: #11A691;           /* Primary brand color */
    --teal-bright: #1FC2AB;    /* Lifted variant for highlights / glow */
    --teal-deep: #0D8170;      /* Deepened variant for hover states */
    --ink-deep: #1A1A1A;       /* Brand black, primary background */
    --ink-soft: #242424;       /* Card / block backgrounds */
    --ink-line: #2E2E2E;       /* Borders, separators */

    /* Typography */
    --paper: #F4F1EA;          /* warm off-white, never pure white */
    --paper-dim: #C8C5BC;
    --paper-fade: #8A8780;

    /* Functional */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 22px;

    /* Type system */
    --font-display: 'Instrument Serif', 'Times New Roman', serif;
    --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

    /* Spacing rhythm */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Layout */
    --max-content: 1200px;
    --max-prose: 720px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.6;
    background: var(--ink-deep);
    color: var(--paper);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* ----- Subtle grain texture (depth without busyness) ----- */
.grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    mix-blend-mode: overlay;
}

/* ----- Reveal animation (subtle, one-shot on load) ----- */
@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    animation: reveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: var(--delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        animation: none;
        opacity: 1;
    }
    html {
        scroll-behavior: auto;
    }
}

/* =============================================================
   NAVIGATION
   ============================================================= */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(26, 26, 26, 0.78);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid rgba(244, 241, 234, 0.06);
}

.nav-inner {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 1.1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--paper);
    font-weight: 500;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.brand-mark {
    width: 28px;
    height: 28px;
    color: var(--teal);
    flex-shrink: 0;
}

.brand-name {
    font-family: var(--font-sans);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--paper-dim);
    font-size: 0.92rem;
    font-weight: 400;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

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

.nav-github {
    color: var(--paper) !important;
    padding: 0.45rem 0.9rem;
    border: 1px solid rgba(244, 241, 234, 0.15);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.nav-github:hover {
    border-color: var(--teal);
    background: rgba(17, 166, 145, 0.08);
}

@media (max-width: 720px) {
    .nav-links {
        gap: 1.2rem;
    }
    .nav-links a:not(.nav-github) {
        display: none;
    }
}

/* =============================================================
   HERO
   ============================================================= */
.hero {
    position: relative;
    padding: 7rem 2rem 6rem;
    overflow: hidden;
    isolation: isolate;
}

.hero-inner {
    max-width: var(--max-content);
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--paper-fade);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--teal-bright);
    box-shadow: 0 0 12px var(--teal-bright);
    animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--paper);
    max-width: 14ch;
    margin-bottom: 1.8rem;
}

.hero-title em {
    font-style: italic;
    color: var(--teal-bright);
    font-family: var(--font-display);
}

.hero-lede {
    font-size: clamp(1.05rem, 1.4vw, 1.25rem);
    line-height: 1.55;
    color: var(--paper-dim);
    max-width: 52ch;
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.4rem;
    background: var(--teal);
    color: var(--ink-deep);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    border: 1px solid var(--teal);
}

.btn-primary:hover {
    background: var(--teal-bright);
    border-color: var(--teal-bright);
    transform: translateY(-1px);
}

.btn-primary svg {
    transition: transform 0.2s ease;
}

.btn-primary:hover svg {
    transform: translateX(2px);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.4rem;
    color: var(--paper);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 400;
    font-size: 0.95rem;
    border: 1px solid rgba(244, 241, 234, 0.15);
    transition: all 0.2s ease;
}

.btn-ghost:hover {
    border-color: var(--paper);
    background: rgba(244, 241, 234, 0.05);
}

/* Decorative grid pattern in hero corner */
.hero-decoration {
    position: absolute;
    top: 50%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    max-width: 800px;
    max-height: 800px;
    transform: translateY(-50%);
    z-index: 1;
    pointer-events: none;
    opacity: 0.4;
}

.grid-lines {
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(17, 166, 145, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 166, 145, 0.08) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 60% 50%, black 0%, transparent 65%);
    -webkit-mask-image: radial-gradient(circle at 60% 50%, black 0%, transparent 65%);
}

/* =============================================================
   SECTION (generic)
   ============================================================= */
.section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 2;
}

.section-alt {
    background: var(--ink-soft);
    border-top: 1px solid var(--ink-line);
    border-bottom: 1px solid var(--ink-line);
}

.section-inner {
    max-width: var(--max-content);
    margin: 0 auto;
}

.section-head {
    margin-bottom: 4rem;
    max-width: var(--max-prose);
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--teal);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--paper);
    margin-bottom: 1rem;
}

.section-sub {
    font-size: 1.1rem;
    color: var(--paper-dim);
    line-height: 1.55;
    font-weight: 300;
}

/* =============================================================
   MODULES GRID
   ============================================================= */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}

.module-card {
    background: var(--ink-soft);
    border: 1px solid var(--ink-line);
    border-radius: var(--radius-md);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 0% 0%, rgba(17, 166, 145, 0.08), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.module-card:hover {
    border-color: rgba(17, 166, 145, 0.4);
    transform: translateY(-2px);
}

.module-card:hover::before {
    opacity: 1;
}

.module-card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.module-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
}

.module-icon svg {
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

.module-status {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    align-items: flex-end;
}

.badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    padding: 0.25rem 0.55rem;
    border-radius: 4px;
    font-weight: 500;
}

.badge-live {
    background: rgba(17, 166, 145, 0.15);
    color: var(--teal-bright);
    border: 1px solid rgba(17, 166, 145, 0.3);
}

.badge-license {
    background: transparent;
    color: var(--paper-fade);
    border: 1px solid rgba(244, 241, 234, 0.15);
}

.module-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 1.85rem;
    line-height: 1.15;
    color: var(--paper);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.module-desc {
    color: var(--paper-dim);
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.module-features {
    list-style: none;
    margin-bottom: 1.8rem;
}

.module-features li {
    color: var(--paper-dim);
    font-size: 0.88rem;
    line-height: 1.5;
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.4rem;
}

.module-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 8px;
    height: 1px;
    background: var(--teal);
}

.module-actions {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--ink-line);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--teal-bright);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    transition: gap 0.2s ease;
}

.link-arrow:hover {
    gap: 0.6rem;
}

.link-arrow:hover svg {
    transform: translate(2px, -2px);
}

.link-arrow svg {
    transition: transform 0.2s ease;
}

/* "More coming" placeholder card */
.module-card--soon {
    background: transparent;
    border: 1px dashed rgba(244, 241, 234, 0.15);
    justify-content: center;
    text-align: left;
}

.module-card--soon::before {
    display: none;
}

.module-card--soon:hover {
    border-color: rgba(244, 241, 234, 0.3);
    transform: none;
}

.soon-mark {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--teal);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.soon-text {
    color: var(--paper-dim);
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

/* =============================================================
   PRINCIPLES (Why we work this way)
   ============================================================= */
.principles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.principle {
    position: relative;
}

.principle-num {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 3.5rem;
    color: var(--teal);
    opacity: 0.4;
    line-height: 1;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.principle-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 1.7rem;
    color: var(--paper);
    margin-bottom: 0.85rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.principle-text {
    color: var(--paper-dim);
    font-size: 0.98rem;
    line-height: 1.6;
    font-weight: 300;
}

/* =============================================================
   ABOUT
   ============================================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 5rem;
    align-items: start;
}

@media (max-width: 880px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.about-text .section-label {
    margin-bottom: 1rem;
}

.about-lede {
    font-size: 1.3rem;
    line-height: 1.45;
    color: var(--paper);
    font-family: var(--font-display);
    font-style: italic;
    margin-bottom: 1.5rem;
    margin-top: 1rem;
}

.about-body {
    color: var(--paper-dim);
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 1.2rem;
    font-weight: 300;
}

.about-meta {
    background: var(--ink-soft);
    border: 1px solid var(--ink-line);
    border-radius: var(--radius-md);
    padding: 2rem;
    position: sticky;
    top: 6rem;
}

.about-meta dl {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

.meta-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-row dt {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--paper-fade);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.meta-row dd {
    color: var(--paper);
    font-size: 0.95rem;
    line-height: 1.4;
}

/* =============================================================
   FOOTER
   ============================================================= */
.footer {
    padding: 6rem 2rem 3rem;
    border-top: 1px solid var(--ink-line);
    background: var(--ink-soft);
    position: relative;
    z-index: 2;
}

.footer-inner {
    max-width: var(--max-content);
    margin: 0 auto;
}

.footer-cta {
    margin-bottom: 5rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid var(--ink-line);
}

.footer-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--paper);
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
    line-height: 1.05;
}

.footer-email {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 3vw, 2rem);
    color: var(--teal-bright);
    text-decoration: none;
    font-style: italic;
    letter-spacing: -0.01em;
    transition: gap 0.25s ease;
}

.footer-email:hover {
    gap: 0.85rem;
}

.footer-email svg {
    transition: transform 0.25s ease;
}

.footer-email:hover svg {
    transform: translate(3px, -3px);
}

.footer-meta {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
}

@media (max-width: 720px) {
    .footer-meta {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--paper);
    font-size: 0.95rem;
}

.footer-brand .brand-mark {
    color: var(--teal);
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

@media (max-width: 720px) {
    .footer-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1.2rem;
    }
}

.footer-links a {
    color: var(--paper-dim);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.footer-legal {
    text-align: right;
    color: var(--paper-fade);
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@media (max-width: 720px) {
    .footer-legal {
        justify-content: center;
        text-align: center;
    }
}

.footer-sep {
    color: var(--paper-fade);
    opacity: 0.5;
}

/* =============================================================
   RESPONSIVE TWEAKS
   ============================================================= */
@media (max-width: 640px) {
    .hero {
        padding: 4rem 1.5rem 4rem;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .footer {
        padding: 4rem 1.5rem 2rem;
    }

    .nav-inner {
        padding: 1rem 1.5rem;
    }

    .module-card {
        padding: 1.5rem;
    }

    .about-meta {
        padding: 1.5rem;
        position: static;
    }
}

/* =============================================================
   LOGO (replaces inline brand-mark SVG)
   ============================================================= */
.brand-logo {
    height: 28px;
    width: auto;
    display: block;
    flex-shrink: 0;
}

.footer-logo {
    height: 32px;
    width: auto;
    display: block;
    flex-shrink: 0;
}

@media (max-width: 480px) {
    .brand-logo {
        height: 24px;
    }
}