/* ============================================================
   Diego Cob — Personal Brand Website
   style.css
   ============================================================ */

/* ------------------------------------------------------------
   1. Custom Properties
   ------------------------------------------------------------ */
:root {
  --color-bg: #ffffff;
  --color-text-primary: #0f0f0f;
  --color-text-secondary: #5c5c5c;
  --color-accent: #1b4fd8;
  --color-accent-hover: #1440b8;
  --color-dark-bg: #0f0f0f;
  --color-dark-text: #ffffff;
  --color-border: #e8e8e8;
  --color-card-bg: #f7f7f7;
  --color-muted: #c0c0c0;
  --color-grid-divider: #333333;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
  --space-2xl: 144px;

  --max-width: 1200px;
  --font-base: 'Inter', sans-serif;
  --nav-height: 72px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --transition-fast: 0.2s ease;
}


/* ------------------------------------------------------------
   2. Reset & Global Base
   ------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-size: 17px;
  line-height: 1.7;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* Shared eyebrow / section-label */
.section-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

/* Scroll fade-in */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    transition: none;
    opacity: 1;
    transform: none;
  }
}


/* ------------------------------------------------------------
   3. Navigation
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--space-md);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav__logo {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text-primary);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text-primary);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav__hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (max-width: 768px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md) var(--space-md);
  }

  .nav__menu--open {
    display: flex;
  }

  .nav__item {
    width: 100%;
  }

  .nav__link {
    display: block;
    padding-block: 14px;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__item:last-child .nav__link {
    border-bottom: none;
  }
}


/* ------------------------------------------------------------
   4. Buttons
   ------------------------------------------------------------ */
.btn--primary,
.btn--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn--primary {
  background-color: var(--color-accent);
  color: #ffffff;
  border: 2px solid var(--color-accent);
  padding: 14px 28px;
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-text-primary);
  padding: 12px 26px;
}

.btn--ghost:hover {
  background-color: var(--color-text-primary);
  color: #ffffff;
}


/* ------------------------------------------------------------
   5. Hero
   ------------------------------------------------------------ */

/*
  Layout intent:
  - .hero is the full-bleed section; it starts at y:0 behind the fixed nav.
  - padding-top must clear the nav (--nav-height: 72px) plus breathing room.
    calc(var(--nav-height) + clamp(40px, 5vw, 80px)) guarantees content never
    slides under the nav regardless of viewport width or zoom level.
  - padding-inline uses max() to replicate the same left-edge alignment that
    max-width + margin-inline:auto gives other sections — at 1920px this
    automatically pushes the text column inward ~360px from the edge,
    matching the grid of every other section.
  - min-height: nav-height + max(480px, 31.25vw) ensures the visible area
    below the nav is never less than 480px. The 31.25vw term (375/1200)
    matches the SVG's natural aspect ratio so cover-fit crops minimally.
  - .hero__photo uses object-position: 65% center to surface the paper-plane
    illustration (which lives in the right portion of the wide canvas) rather
    than the empty sky on the left side.
*/

.hero {
  /* 800/1920 = 41.67vw matches sunset SVG's natural 2.4:1 ratio */
  min-height: calc(var(--nav-height) + max(480px, 41.67vw));
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-block: calc(var(--nav-height) + clamp(40px, 5vw, 80px)) clamp(40px, 5vw, 80px);
  padding-inline: max(var(--space-md), calc((100% - var(--max-width)) / 2 + var(--space-md)));
  /* Fallback color matches dominant dark left-side tone of the watercolor image.
     Prevents any zoom-rounding gap from exposing the white body or accent blue. */
  background-color: #1a1a2e;
}

/* Dark-to-transparent gradient overlay ensures WCAG AA contrast for white text
   over any tone in the watercolor image. Sits above the photo, below the content. */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.62) 0%,
    rgba(0, 0, 0, 0.42) 45%,
    rgba(0, 0, 0, 0.08) 100%
  );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: clamp(340px, 48%, 580px);
}

.hero__label {
  display: block;
  font-size: clamp(10px, 1vw, 13px);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.80);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.hero__heading {
  font-size: clamp(28px, 3.5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: #ffffff;
}

.hero__tagline {
  font-size: clamp(14px, 1.3vw, 17px);
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 48px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Ghost button scoped to hero — white border/text for contrast on dark overlay */
.hero .btn--ghost {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.80);
}

.hero .btn--ghost:hover {
  background-color: #ffffff;
  color: var(--color-text-primary);
}

.hero__photo {
  position: absolute;
  inset: 0;
  z-index: 0;
  /* min-width/min-height guard against sub-pixel shortfall at non-integer zoom
     levels where width/height:100% can resolve to 1–2 px less than the container */
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  pointer-events: none;
}

.hero__photo-img {
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

@media (max-width: 768px) {
  .hero {
    min-height: calc(var(--nav-height) + 380px);
    /* revert to simple padding on mobile; no wide-viewport centering needed */
    padding-block: calc(var(--nav-height) + 32px) 48px;
    padding-inline: 20px;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__photo-img {
    /* on narrow screens keep the plane roughly centred horizontally */
    object-position: 60% center;
  }
}


/* ------------------------------------------------------------
   6. Stats
   ------------------------------------------------------------ */
.stats {
  background-color: var(--color-dark-bg);
  padding: var(--space-lg) var(--space-md);
}

.stats__grid {
  max-width: var(--max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--color-grid-divider);
}

.stats__card {
  background-color: var(--color-dark-bg);
  padding: 40px 32px;
  text-align: center;
}

.stats__number {
  display: block;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  color: var(--color-dark-text);
  line-height: 1;
}

.stats__label {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

@media (max-width: 768px) {
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ------------------------------------------------------------
   7. About
   ------------------------------------------------------------ */
.about {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 80px;
  align-items: start;
}

.about__photo {
  position: sticky;
  top: 100px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.about__photo-img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.about__intro {
  margin-bottom: 32px;
}

.about__heading {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-top: 12px;
}

.about__body p {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.about__body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .about {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .about__photo {
    position: static;
    max-width: 280px;
    margin-inline: auto;
  }
}


/* ------------------------------------------------------------
   8. Services
   ------------------------------------------------------------ */
.services {
  background-color: var(--color-card-bg);
  padding: var(--space-2xl) var(--space-md);
}

.services__header {
  max-width: var(--max-width);
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}

.services__heading {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.services__grid {
  max-width: var(--max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.services__card {
  background-color: var(--color-bg);
  padding: 40px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.services__icon {
  font-size: 24px;
  color: var(--color-accent);
  margin-bottom: 20px;
  display: block;
}

.services__card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.services__card-body {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
}


/* ------------------------------------------------------------
   9. Impact Stories
   ------------------------------------------------------------ */
.stories {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin-inline: auto;
}

.stories__header {
  margin-bottom: var(--space-lg);
}

.stories__heading {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.stories__card {
  padding-bottom: 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--color-border);
}

.stories__card:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.stories__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.stories__number {
  font-size: 13px;
  color: var(--color-muted);
  font-weight: 600;
  min-width: 28px;
}

.stories__tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stories__title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

.stories__body {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.stories__rule {
  display: none;
}

@media (max-width: 768px) {
  .stories__number {
    display: none;
  }
}


/* ------------------------------------------------------------
   10. Clients
   ------------------------------------------------------------ */
.clients {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin-inline: auto;
}

.clients__header {
  margin-bottom: var(--space-sm);
}

.clients__heading {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.clients__intro {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-top: var(--space-sm);
}

.clients__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
}

.client-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  cursor: default;
}

.client-logo:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}


/* ------------------------------------------------------------
   11. Testimonials
   ------------------------------------------------------------ */
.testimonials {
  background-color: var(--color-card-bg);
  padding: var(--space-2xl) var(--space-md);
}

.testimonials__header {
  max-width: var(--max-width);
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}

.testimonials__heading {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.testimonials__grid {
  max-width: var(--max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.testimonials__card {
  background-color: var(--color-bg);
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.testimonials__quote-mark {
  display: block;
  font-size: 64px;
  line-height: 1;
  color: var(--color-border);
  font-family: Georgia, serif;
  margin-bottom: -16px;
}

.testimonials__blockquote p {
  font-size: 17px;
  color: var(--color-text-primary);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 24px;
}

.testimonials__attribution {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
  font-style: normal;
}

@media (max-width: 768px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}


/* ------------------------------------------------------------
   12. Certifications
   ------------------------------------------------------------ */
.certs {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin-inline: auto;
}

.certs__header {
  margin-bottom: var(--space-sm);
}

.certs__heading {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.certs__intro {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-top: var(--space-sm);
  margin-bottom: 56px;
}

.certs__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.certs__card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: border-color var(--transition-fast);
}

.certs__card:hover {
  border-color: var(--color-accent);
}

.certs__icon {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  display: block;
}

.certs__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.certs__issuer {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.certs__year {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .certs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .certs__grid {
    grid-template-columns: 1fr;
  }
}


/* ------------------------------------------------------------
   13. Contact
   ------------------------------------------------------------ */
.contact {
  background-color: var(--color-dark-bg);
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
}

.contact__heading {
  font-size: clamp(32px, 5vw, 52px);
  color: var(--color-dark-text);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: var(--max-width);
  margin-inline: auto;
}

.contact__body {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.65);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.contact__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.contact__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  color: var(--color-dark-text);
  font-weight: 600;
  font-size: 15px;
  transition: border-color var(--transition-fast);
}

.contact__btn:hover {
  border-color: var(--color-dark-text);
}


/* ------------------------------------------------------------
   14. Footer
   ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin-inline: auto;
}

.site-footer__copy {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.site-footer__nav {
  display: flex;
  gap: var(--space-sm);
}

.site-footer__link {
  color: var(--color-text-secondary);
  font-size: 18px;
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-text-primary);
}

@media (max-width: 480px) {
  .site-footer {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}