/* ============================================================
   Fonts — local Montserrat (no external imports)
   ============================================================ */
@font-face {
    font-family: 'Montserrat';
    src: url('../assets/regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('../assets/semibold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

/* ============================================================
   Design tokens — light mode (default)
   ============================================================ */
:root {
    --color-bg:             #FFFFFF;
    --color-surface:        #F5F3F4;
    --color-border:         rgba(35, 31, 32, 0.1);
    --color-text-primary:   #231F20;
    --color-text-secondary: #6B6B6B;
    --color-accent:         #2D6BE4;

    --font-family:          'Montserrat', sans-serif;
    --font-weight-regular:  400;
    --font-weight-semibold: 600;

    --radius-sm:   4px;
    --radius-pill: 100px;

    --max-width:   1200px;

    --transition-theme: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ============================================================
   Dark mode — driven entirely by #theme-toggle checkbox, no JS
   ============================================================ */
body:has(#theme-toggle:checked) {
    --color-bg:             #231F20;
    --color-surface:        #161314;
    --color-border:         rgba(255, 255, 255, 0.08);
    --color-text-primary:   #FFFFFF;
    --color-text-secondary: #6B6B6B;
    --color-accent:         #2D6BE4;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    font-size: 16px;
    line-height: 1.6;
    transition: var(--transition-theme);
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================================
   Theme toggle
   ============================================================ */
#theme-toggle {
    display: none;
}

.theme-toggle-label {
    display: inline-flex;
    align-items: center;
    width: 48px;
    height: 26px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.theme-toggle-label::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: var(--color-accent);
    border-radius: 50%;
    left: 3px;
    transition: transform 0.25s ease;
}

/* Slide the knob when checked — #theme-toggle and header are siblings inside body */
#theme-toggle:checked ~ header .theme-toggle-label::after {
    transform: translateX(22px);
}

/* ============================================================
   Header
   ============================================================ */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-theme);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-accent);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
    padding: 6rem 2rem 5rem;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.hero-inner {
    max-width: 720px;
    margin: 0 auto;
}

.hero-logo {
    height: 256px;
    width: auto;
    margin: 0 auto 2.25rem;
    border-radius: var(--radius-sm);
}

.hero-kicker {
    display: inline-block;
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 2rem;
    padding: 0.35rem 0.9rem;
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-pill);
    opacity: 0.85;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: var(--font-weight-semibold);
    line-height: 1.18;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.hero h1 em {
    font-style: normal;
    color: var(--color-accent);
}

.hero-sub {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.85;
    max-width: 560px;
    margin: 0 auto 2.75rem;
}

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

.btn-primary {
    display: inline-block;
    background: var(--color-accent);
    color: #ffffff;
    font-family: var(--font-family);
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 0.9rem 2.25rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: filter 0.2s ease, transform 0.15s ease;
    text-decoration: none;
}

.btn-primary:hover {
    filter: brightness(0.88);
    transform: translateY(-1px);
}

.hero-trust {
    font-size: 11px;
    color: var(--color-text-secondary);
    letter-spacing: 0.04em;
}

/* ============================================================
   Stats bar
   ============================================================ */
.stats {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-theme);
}

.stats-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}

.stat-cell {
    padding: 2rem 1.5rem;
    text-align: center;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-theme);
}

/* 2-column mobile: no right border on even cells */
.stat-cell:nth-child(2n) {
    border-right: none;
}

/* 2-column mobile: no bottom border on last row */
.stat-cell:nth-child(n+3) {
    border-bottom: none;
}

.stat-number {
    font-size: 2.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    line-height: 1;
    letter-spacing: -0.025em;
}

.stat-label {
    font-size: 9px;
    color: var(--color-text-secondary);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-top: 0.45rem;
}

/* ============================================================
   Features
   ============================================================ */
.features {
    padding: 4rem 2rem;
    border-bottom: 1px solid var(--color-border);
}

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

.section-label {
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.feature-card {
    background: var(--color-surface);
    padding: 1.75rem 1.5rem 1.75rem 1.5rem;
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: var(--transition-theme);
}

.feature-number {
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    letter-spacing: 0.14em;
    margin-bottom: 0.6rem;
}

.feature-title {
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: 0.35rem;
    line-height: 1.3;
}

.feature-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

/* ============================================================
   Contact
   ============================================================ */
.contact {
    padding: 4rem 2rem;
    border-top: 1px solid var(--color-border);
}

.contact-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

.contact-info h2 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.015em;
    margin-bottom: 0.75rem;
}

.contact-info p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    max-width: 360px;
}

.link-linkedin {
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: opacity 0.2s;
}

.link-linkedin:hover {
    opacity: 0.7;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-form input,
.contact-form textarea {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    padding: 0.85rem 1rem;
    font-size: 13px;
    font-family: var(--font-family);
    border-radius: var(--radius-sm);
    outline: none;
    width: 100%;
    transition: border-color 0.2s ease, var(--transition-theme);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.55;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--color-accent);
}

.contact-form textarea {
    min-height: 110px;
    resize: vertical;
}

.form-row {
    display: flex;
    gap: 0.75rem;
}

.form-row .col {
    flex: 1;
    min-width: 0;
}

@media (max-width: 479px) {
    .form-row {
        flex-direction: column;
    }
}

/* ============================================================
   Footer
   ============================================================ */
footer {
    padding: 1.5rem 2rem;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    transition: var(--transition-theme);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
}

.footer-address {
    font-size: 11px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.footer-link {
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: opacity 0.2s;
}

.footer-link:hover {
    opacity: 0.7;
}

/* ============================================================
   Responsive — tablet ≥ 600px
   ============================================================ */
@media (min-width: 600px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

/* ============================================================
   Responsive — desktop ≥ 900px
   ============================================================ */
@media (min-width: 900px) {
    /* Stats: single row of 4 */
    .stats-inner {
        grid-template-columns: repeat(4, 1fr);
    }

    .stat-cell {
        border-bottom: none;
    }

    /* Restore right border on even cells (overrides mobile rule) */
    .stat-cell:nth-child(2n) {
        border-right: 1px solid var(--color-border);
    }

    .stat-cell:last-child {
        border-right: none;
    }

    /* Features: 3-column grid */
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Contact: side-by-side */
    .contact-inner {
        grid-template-columns: 1fr 1fr;
        gap: 5rem;
        align-items: start;
    }
}