/* =========================================================
   PixConvert — Main Stylesheet
   Theme is controlled entirely through the CSS variables
   below. Change these to re-skin the whole site.
   ========================================================= */

:root {
  /* Colors */
  --color-header-bg: #1c1c1c;
  --color-header-bg-2: #262626;
  --color-body-bg: #f7f7f7;
  --color-card-bg: #ffffff;
  --color-border: #e6e6e6;
  --color-accent: #c0392b;
  --color-accent-dark: #a53225;
  --color-text-dark: #222222;
  --color-text-body: #555555;
  --color-text-muted: #8a8a8a;
  --color-nav-link: #cfcfcf;
  --color-white: #ffffff;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --fs-h1: 2.6rem;
  --fs-h2: 1.5rem;
  --fs-body: 1rem;

  /* Layout */
  --max-width: 1140px;
  --radius: 8px;
  --radius-sm: 4px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-main);
  color: var(--color-text-body);
  background: var(--color-body-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

img {
  max-width: 100%;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* -------------------- Header / Nav -------------------- */

.site-header {
  background: linear-gradient(180deg, var(--color-header-bg) 0%, var(--color-header-bg-2) 100%);
  color: var(--color-white);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
}

.logo svg {
  width: 26px;
  height: 26px;
}

.logo:hover {
  text-decoration: none;
  color: var(--color-white);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-nav-link);
  font-size: 0.95rem;
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.nav-account {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-account a {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-account a:hover {
  text-decoration: none;
  opacity: 0.85;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

/* Mobile dropdown menu (toggled via .nav-open on .site-header by main.js) */
@media (max-width: 640px) {
  .site-header {
    position: relative;
  }

  .nav-bar {
    flex-wrap: wrap;
    row-gap: 14px;
  }

  .site-header.nav-open .main-nav,
  .site-header.nav-open .nav-account {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
    order: 5;
    padding-top: 6px;
  }
}

/* -------------------- Hero -------------------- */

section.hero {
  background: linear-gradient(180deg, var(--color-header-bg) 0%, var(--color-header-bg-2) 100%);
  margin-top: -1px; /* seams flush with header above */
}

.hero {
  padding: 40px 0 60px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-copy h1 {
  font-size: var(--fs-h1);
  font-weight: 800;
  color: var(--color-white);
  margin: 0 0 14px;
}

.hero-copy p {
  color: #b7b7b7;
  max-width: 520px;
  margin: 0;
  font-size: 1rem;
}

.hero-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.hero-controls span {
  color: #cfcfcf;
  font-size: 0.95rem;
}

.format-select {
  background: #2e2e2e;
  border: 1px solid #3d3d3d;
  color: var(--color-white);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  min-width: 90px;
  appearance: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

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

/* -------------------- Upload Section -------------------- */

.upload-section {
  text-align: center;
  padding: 40px 0 30px;
}

.btn-select-file {
  background: var(--color-accent);
  color: var(--color-white);
  border: none;
  padding: 16px 30px;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-select-file:hover {
  background: var(--color-accent-dark);
}

.upload-hint {
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

#file-input {
  display: none;
}

.dropzone {
  max-width: 640px;
  margin: 24px auto 0;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone.dragover {
  border-color: var(--color-accent);
  background: #fdf3f2;
}

/* -------------------- Converter Grid Card -------------------- */

.converter-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 900px;
  margin: 0 auto 60px;
  padding: 26px 30px 34px;
}

.converter-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-dark);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.converter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 30px;
}

.converter-grid a {
  font-size: 0.92rem;
  padding: 3px 0;
  display: block;
}

/* -------------------- Features -------------------- */

.features {
  background: var(--color-body-bg);
  padding: 20px 0 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 60px;
}

.feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.feature .icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  color: var(--color-text-dark);
}

.feature h3 {
  margin: 4px 0 8px;
  font-size: 1.1rem;
  color: var(--color-text-dark);
}

.feature p {
  margin: 0;
  font-size: 0.95rem;
}

/* -------------------- Stats Bar -------------------- */

.stats-bar {
  text-align: center;
  padding: 22px 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--color-border);
}

.stats-bar strong {
  color: var(--color-text-dark);
}

/* -------------------- Footer -------------------- */

.site-footer {
  background: #eeeeee;
  padding: 44px 0 26px;
  font-size: 0.92rem;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.footer-columns h4 {
  color: var(--color-text-dark);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  margin: 0 0 14px;
}

.footer-columns ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-columns li {
  margin-bottom: 10px;
}

.footer-columns a {
  overflow-wrap: break-word;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid #dcdcdc;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 10px;
}

/* -------------------- Generic Content Pages -------------------- */

.page-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 50px 24px 70px;
  background: var(--color-card-bg);
}

.page-content h1 {
  color: var(--color-text-dark);
  font-size: 2rem;
  margin-bottom: 8px;
}

.page-content h2 {
  color: var(--color-text-dark);
  font-size: 1.25rem;
  margin-top: 34px;
}

.page-content .updated {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 30px;
}

.page-content ul {
  padding-left: 20px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 480px;
}

.contact-form label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-dark);
}

.contact-form input,
.contact-form textarea {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.95rem;
}

.contact-form button {
  align-self: flex-start;
}

.form-status {
  font-size: 0.9rem;
  margin-top: 4px;
}

.form-status.success { color: #2c7a4b; }
.form-status.error { color: var(--color-accent); }

.error-page {
  text-align: center;
  padding: 100px 24px;
}

.error-page h1 {
  font-size: 5rem;
  margin: 0;
  color: var(--color-accent);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

/* -------------------- Responsive -------------------- */

@media (max-width: 860px) {
  .converter-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .footer-columns { grid-template-columns: repeat(2, 1fr); gap: 30px 24px; }
  .hero { padding: 34px 0 48px; }
  .upload-section { padding: 34px 0 30px; }
}

@media (max-width: 640px) {
  .main-nav, .nav-account { display: none; }
  .mobile-toggle { display: block; }
  .nav-bar { padding: 13px 0; }
  .hero { padding: clamp(24px, 6vw, 34px) 0 clamp(50px, 12vw, 70px); flex-direction: column; align-items: flex-start; }
  .hero-controls { flex-wrap: wrap; }
  :root { --fs-h1: 1.9rem; }
  .converter-grid { grid-template-columns: 1fr 1fr; }
  .footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 16px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .container { padding: 0 18px; }
  .upload-section { padding: clamp(20px, 6vw, 28px) 0 24px; }
  .btn-select-file { width: 100%; justify-content: center; padding: 15px 20px; }
  .dropzone { padding: 22px 16px; margin: 20px auto 0; }
  .converter-card { padding: 20px 18px 26px; }
  .format-select { min-width: 76px; padding: 9px 12px; font-size: 0.88rem; }
  .hero-controls span { font-size: 0.85rem; }
  .feature { gap: 14px; }
  .page-content { padding: 34px 18px 50px; }
  .contact-form { max-width: 100%; }
  .contact-form button { align-self: stretch; text-align: center; justify-content: center; }
  .stats-bar { font-size: 0.85rem; padding: 18px 12px; }
}

@media (max-width: 420px) {
  .converter-grid { grid-template-columns: 1fr; }
  :root { --fs-h1: 1.6rem; }
  .hero-copy p { font-size: 0.92rem; }
}