/* =====================================================================
   Matendo Medics — base.css
   Design tokens, reset, typography, layout primitives.
   ===================================================================== */

:root {
    /* Brand — deep teal hero with vibrant accent */
    --c-primary:        #1e7e7c;
    --c-primary-dark:   #0f4f4d;
    --c-primary-light:  #34b3ae;
    --c-accent:         #ffba08;
    --c-accent-warm:    #ff7a59;

    --c-ink:            #0a1f1e;     /* hero / dark sections */
    --c-ink-2:          #122d2c;

    --c-bg:             #ffffff;
    --c-bg-alt:         #f6f9f9;
    --c-bg-soft:        #eef6f5;
    --c-surface:        #ffffff;
    --c-border:         #e5e7eb;
    --c-border-soft:    #eef0f3;

    --c-text:           #0f172a;
    --c-text-muted:     #5b6776;
    --c-text-soft:      #8a95a3;
    --c-text-inverted:  #ffffff;

    --c-success:        #10b981;
    --c-warning:        #f59e0b;
    --c-error:          #ef4444;

    --radius-sm: 6px;
    --radius:    12px;
    --radius-lg: 18px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow:    0 6px 20px rgba(15, 23, 42, .08);
    --shadow-lg: 0 18px 50px rgba(15, 23, 42, .14);
    --shadow-glow: 0 18px 50px rgba(30, 126, 124, .25);

    --container: 1200px;
    --container-narrow: 560px;

    --space-1: 4px;
    --space-2: 6px;
    --space-3: 10px;
    --space-4: 14px;
    --space-5: 20px;
    --space-6: 28px;
    --space-7: 40px;
    --space-8: 52px;
    --space-9: 72px;
    --space-10: 96px;

    /* One symmetric horizontal gutter, applied to .container, .nav-container,
       .hero, .footer — keeps left/right breathing room equal at every breakpoint. */
    --gutter: clamp(20px, 4vw, 56px);

    --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

    --ease:           cubic-bezier(.2, .7, .2, 1);
    --ease-out:       cubic-bezier(.16, 1, .3, 1);
    --transition:     200ms var(--ease);
    --transition-slow:480ms var(--ease-out);
}

* { box-sizing: border-box; }

html { font-size: 13px; }
@media (min-width: 1200px) { html { font-size: 14px; } }

html, body {
    margin: 0; padding: 0;
    font-family: var(--font-sans);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.5;
    font-size: .94rem;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-primary-dark); text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 var(--space-3); color: var(--c-text); font-weight: 700; letter-spacing: -0.015em; font-family: var(--font-display); }
h1 { font-size: clamp(1.6rem, 1.05rem + 1.8vw, 2.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.25rem, .95rem + .9vw, 1.65rem); letter-spacing: -0.015em; }
h3 { font-size: 1.05rem; letter-spacing: -0.005em; }
h4 { font-size: .95rem; }

p { margin: 0 0 var(--space-3); font-size: .94rem; }
small { font-size: .8rem; }

ul, ol { margin: 0 0 var(--space-4); padding-left: 1.25rem; }

.container       { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container.narrow{ max-width: var(--container-narrow); }

.section          { padding: var(--space-6) 0; }
.section-alt      { background: var(--c-bg-alt); }

.section-title    { text-align: center; margin-bottom: var(--space-2); }
.section-sub      { text-align: center; color: var(--c-text-muted); margin: 0 auto var(--space-4); max-width: 720px; font-size: .92rem; }

.text-center { text-align: center; }
.muted       { color: var(--c-text-muted); }
.small       { font-size: .875rem; }
.mt-16       { margin-top: var(--space-4); }
.mt-32       { margin-top: var(--space-6); }
.w-full      { width: 100%; }

.span-2 { grid-column: span 2; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); }

@media (max-width: 720px) {
    .grid-2, .two-col { grid-template-columns: 1fr; }
    .span-2 { grid-column: auto; }
}

.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute; left: -9999px; top: var(--space-3);
    background: var(--c-text); color: #fff; padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-3); z-index: 1000; }

:focus-visible {
    outline: 3px solid var(--c-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* =====================================================================
   SCROLL-REVEAL utilities (driven by IntersectionObserver in main.js)
   ===================================================================== */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
    will-change: opacity, transform;
}
[data-reveal="fade"]    { transform: none; }
[data-reveal="left"]    { transform: translateX(-32px); }
[data-reveal="right"]   { transform: translateX(32px); }
[data-reveal="zoom"]    { transform: scale(.94); }
[data-reveal].is-in     { opacity: 1; transform: none; }

/* Stagger children when the parent is the trigger. */
[data-reveal-stagger] > * {
    opacity: 0; transform: translateY(20px);
    transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
[data-reveal-stagger].is-in > * { opacity: 1; transform: none; }
[data-reveal-stagger].is-in > *:nth-child(1) { transition-delay:  60ms; }
[data-reveal-stagger].is-in > *:nth-child(2) { transition-delay: 130ms; }
[data-reveal-stagger].is-in > *:nth-child(3) { transition-delay: 200ms; }
[data-reveal-stagger].is-in > *:nth-child(4) { transition-delay: 270ms; }
[data-reveal-stagger].is-in > *:nth-child(5) { transition-delay: 340ms; }
[data-reveal-stagger].is-in > *:nth-child(6) { transition-delay: 410ms; }
[data-reveal-stagger].is-in > *:nth-child(7) { transition-delay: 480ms; }
[data-reveal-stagger].is-in > *:nth-child(8) { transition-delay: 550ms; }

@media (prefers-reduced-motion: reduce) {
    [data-reveal], [data-reveal-stagger] > * {
        opacity: 1 !important; transform: none !important; transition: none !important;
    }
    * { animation-duration: 0ms !important; transition-duration: 0ms !important; }
}

/* =====================================================================
   PAGE ENTER — runs once on every page load, on every page.
   Subtle fade + lift; respects prefers-reduced-motion above.
   ===================================================================== */
main { animation: pageEnter 520ms cubic-bezier(.16, 1, .3, 1) both; }
@keyframes pageEnter {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: none; }
}