/* ============================================================
   adelyons.com — Global Styles
   Design: light theme inspired by cleangeek.app
   Blue accent (#2563eb) + white/off-white backgrounds
   ============================================================ */

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

:root {
  --color-bg:           #ffffff;
  --color-bg-alt:       #f8fafc;
  --color-bg-dark:      #0f172a;
  --color-surface:      #ffffff;
  --color-accent:       #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #dbeafe;
  --color-text:         #0f172a;
  --color-text-secondary: #64748b;
  --color-text-light:   #94a3b8;
  --color-border:       #e2e8f0;

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

  --radius:    0.5rem;
  --radius-lg: 0.75rem;

  --shadow:    0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.1);

  --transition: 200ms ease;

  --max-width: 72rem;
  --section-gap: clamp(4rem, 10vw, 8rem);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── Accessibility ───────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

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

/* ── Layout Utilities ────────────────────────────────────── */
.container {
  width: min(var(--max-width), 100% - 2rem);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-gap);
}

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-text);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ── Header / Nav ────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color var(--transition);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Hamburger — hidden on desktop */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius);
}

.hamburger__bar {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hamburger open state */
.nav__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Nav (single breakpoint) ─────────────────────── */
@media (max-width: 768px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    inset: 64px 0 0 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    background: var(--color-bg);
    font-size: 1.25rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
  }

  .nav__links.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav__link {
    font-size: 1.125rem;
  }
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding-block: clamp(3rem, 8vw, 5rem);
  background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 50%, #f8fafc 100%);
  text-align: center;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 4rem);
  color: var(--color-text);
}

.hero__tagline {
  font-size: clamp(1.0625rem, 2.5vw, 1.375rem);
  color: var(--color-text-secondary);
  max-width: 48ch;
}

/* ── Apps ────────────────────────────────────────────────── */
.apps {
  width: 100%;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.apps__subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-top: -1.5rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
}

.apps__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.app-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.app-card__icon {
  font-size: 2.25rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.app-card__icon--image img {
  display: block;
  width: 2.75rem;
  height: 2.75rem;
  object-fit: contain;
}

.app-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
}

.app-card__tagline {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.app-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ── About ───────────────────────────────────────────────── */
.about {
  background-color: var(--color-bg-alt);
}

.about__content {
  max-width: 90ch;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  color: var(--color-text-secondary);
  text-align: center;
}

.about__content p {
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
}

/* ── Contact ─────────────────────────────────────────────── */
.contact {
  background-color: var(--color-bg-dark);
}

.contact .section__title {
  color: #ffffff;
}

.contact__inner {
  max-width: 600px;
}

.contact__intro {
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #cbd5e1;
}

.form-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.7em 0.9em;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-input::placeholder {
  color: var(--color-text-light);
  opacity: 0.6;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

/* Form status message */
.form-status {
  min-height: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  border-radius: var(--radius);
  padding: 0;
}

.form-status:not(:empty) {
  padding: 0.75em 1em;
}

.form-status--success {
  background: rgba(34, 197, 94, 0.12);
  color: #34d399;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-status--error {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Contact button override — white on dark bg */
.contact .btn--primary {
  background-color: var(--color-accent);
  color: #fff;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 2rem;
  text-align: center;
}

.site-footer p {
  font-size: 0.875rem;
  color: var(--color-text-light);
}