/* =============================================================================
   Bike Adventure Series — photos.bikeadventureseries.com
   Stylesheet completo (design system BAS applicato)
   ============================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@500;600;700;800&family=Lato:wght@400;700;900&display=swap");

/* -----------------------------------------------------------------------------
   1. Tokens BAS
   -------------------------------------------------------------------------- */
:root {
  /* Brand core */
  --bas-maroon:     #7a113c;
  --bas-maroon-800: #5a0c2c;
  --bas-maroon-400: #a24361;
  --bas-maroon-100: #f3dde4;
  --bas-blue:       #88b5e2;
  --bas-blue-600:   #5b92cc;
  --bas-blue-100:   #dae9f6;
  --bas-sage:       #d0d8bb;
  --bas-sage-100:   #e8ecdc;
  --bas-off-white:  #fefced;
  --bas-black:      #000000;

  /* Danger (per "non sono io" e errori). Rosso caldo, in armonia col marroon. */
  --bas-danger:     #b8362d;
  --bas-danger-800: #8e261f;

  /* Semantici */
  --bg:           var(--bas-off-white);
  --bg-alt:       var(--bas-sage);
  --bg-inverse:   var(--bas-maroon);
  --surface:      var(--bas-off-white);
  --fg:           var(--bas-black);
  --fg-muted:     #3a3a3a;
  --fg-subtle:    #6a6a6a;
  --fg-on-maroon: var(--bas-off-white);
  --accent:       var(--bas-maroon);
  --accent-secondary: var(--bas-blue);
  --border-hair:  rgba(0,0,0,0.12);
  --border-maroon: rgba(122,17,60,0.22);
  --focus-ring:   var(--bas-blue);

  /* Typography */
  --font-display: "Barlow Condensed", "Aktiv Grotesk Ex Deva", "Helvetica Neue", sans-serif;
  --font-body:    "Lato", -apple-system, "Segoe UI", sans-serif;

  /* Spacing 4px scale */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px; --sp-5: 24px;
  --sp-6: 32px; --sp-7: 48px; --sp-8: 64px; --sp-9: 96px; --sp-10: 128px;

  /* Radii — restrained */
  --r-1: 2px; --r-2: 4px; --r-3: 8px;

  /* Motion */
  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur-fast: 120ms;
  --dur-base: 240ms;

  /* Layout */
  --cw-narrow: 560px;     /* form pages */
  --cw-regular: 1040px;   /* gallery */
}

/* -----------------------------------------------------------------------------
   2. Reset + base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  /* iOS notch safe + sticky topbar offset gestito da .page */
  min-height: 100vh;
  min-height: 100dvh;
  display: flex; flex-direction: column;
}

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

a {
  color: var(--accent-secondary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease-standard);
}
a:hover { border-bottom-color: currentColor; }
a:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: var(--r-1); }

::selection { background: var(--bas-maroon); color: var(--bas-off-white); }

/* -----------------------------------------------------------------------------
   3. Layout shell
   -------------------------------------------------------------------------- */

/* Sticky topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bas-off-white);
  border-bottom: 1px solid var(--border-maroon);
  padding: var(--sp-3) var(--sp-5);
  padding-top: max(var(--sp-3), env(safe-area-inset-top));
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  padding-right: max(var(--sp-5), env(safe-area-inset-right));
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-4);
}
.topbar__brand { display: flex; align-items: center; gap: var(--sp-3); }
.topbar__brand img { height: 32px; width: auto; }
.topbar__tag {
  font-family: var(--font-body);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-subtle);
  border-left: 1px solid var(--border-maroon);
  padding-left: var(--sp-3);
}
@media (max-width: 480px) {
  .topbar__tag { display: none; }
  .topbar { padding: var(--sp-3) var(--sp-4); }
}

/* Main column */
.page {
  flex: 1;
  width: 100%;
  max-width: var(--cw-narrow);
  margin: 0 auto;
  padding: var(--sp-6) var(--sp-5) var(--sp-8);
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  padding-right: max(var(--sp-5), env(safe-area-inset-right));
}
.page--wide { max-width: var(--cw-regular); }

/* Footer */
.footer {
  border-top: 1px solid var(--border-maroon);
  padding: var(--sp-5);
  padding-bottom: max(var(--sp-5), env(safe-area-inset-bottom));
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-subtle);
  background: var(--bas-off-white);
}
.footer__inner {
  max-width: var(--cw-regular);
  margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-4);
  justify-content: space-between;
}
.footer__links { display: flex; gap: var(--sp-4); flex-wrap: wrap; }
.footer a { color: var(--fg-subtle); }
.footer a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* -----------------------------------------------------------------------------
   4. Typography
   -------------------------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 11vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--sp-5);
}
.display--lg { font-size: clamp(48px, 13vw, 96px); }

h1, .h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin: 0 0 var(--sp-4);
}

h2, .h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 4.5vw, 28px);
  line-height: 1.1;
  color: var(--accent);
  margin: 0 0 var(--sp-3);
}

h3, .h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.2;
  color: var(--accent);
  margin: 0 0 var(--sp-3);
}

p { margin: 0 0 var(--sp-4); }

.overline {
  font-family: var(--font-body);
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--sp-3);
  display: inline-flex; align-items: center; gap: var(--sp-2);
}
.overline img { height: 14px; width: auto; }

.lead {
  font-size: 18px;
  line-height: 1.5;
  color: var(--fg-muted);
}
.muted { color: var(--fg-subtle); }
.small { font-size: 13px; }

/* Divider with shape stamp */
.divider {
  display: flex; align-items: center; gap: var(--sp-3);
  margin: var(--sp-6) 0;
}
.divider__line { flex: 1; height: 1px; background: var(--border-maroon); }
.divider img { width: 20px; height: 20px; opacity: 0.85; }

/* -----------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 16px 24px;
  min-height: 48px;
  border-radius: var(--r-2);
  border: 0;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--sp-2);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
  -webkit-tap-highlight-color: transparent;
}
.btn:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.btn:active { transform: translateY(1px); }
.btn--block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.45; cursor: not-allowed; pointer-events: none;
}

.btn--primary {
  background: var(--bas-maroon);
  color: var(--bas-off-white);
}
.btn--primary:hover { background: var(--bas-maroon-800); border-bottom-color: transparent; }

.btn--secondary {
  background: transparent;
  color: var(--bas-maroon);
  border: 2px solid var(--bas-maroon);
  padding: 14px 22px;
}
.btn--secondary:hover {
  background: var(--bas-maroon);
  color: var(--bas-off-white);
  border-bottom-color: var(--bas-maroon);
}

.btn--danger {
  background: transparent;
  color: var(--bas-danger);
  border: 2px solid var(--bas-danger);
  padding: 14px 22px;
}
.btn--danger:hover {
  background: var(--bas-danger);
  color: var(--bas-off-white);
  border-bottom-color: var(--bas-danger);
}

.btn--ghost {
  background: transparent;
  color: var(--accent-secondary);
  padding: 12px 0;
  min-height: 44px;
  border-bottom: 2px solid transparent;
  border-radius: 0;
}
.btn--ghost:hover { border-bottom-color: var(--accent-secondary); }

.btn--sm {
  font-size: 13px; padding: 10px 14px; min-height: 40px;
}

/* -----------------------------------------------------------------------------
   6. Form
   -------------------------------------------------------------------------- */
.form { display: flex; flex-direction: column; gap: var(--sp-5); }

.field { display: flex; flex-direction: column; gap: var(--sp-2); }
.field__label {
  font-family: var(--font-body);
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent);
}
.field__hint {
  font-size: 13px; color: var(--fg-subtle); line-height: 1.4;
}
.field__hint--inline {
  margin-top: 2px;
}
.field__error {
  font-size: 13px; color: var(--bas-danger); font-weight: 700; line-height: 1.4;
  display: flex; align-items: flex-start; gap: var(--sp-2);
}

.input {
  font-family: var(--font-body);
  font-size: 16px;          /* >=16 evita zoom iOS */
  font-weight: 400;
  padding: 14px 14px;
  min-height: 48px;
  border: 1px solid var(--border-maroon);
  border-radius: var(--r-1);
  background: var(--bas-off-white);
  color: var(--fg);
  outline: none;
  width: 100%;
  transition: border-color var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur-fast) var(--ease-standard);
}
.input:focus {
  border-color: var(--focus-ring);
  box-shadow: 0 0 0 3px rgba(136,181,226,0.35);
}
.input::placeholder { color: #9a9a9a; }
.input.is-invalid {
  border-color: var(--bas-danger);
  box-shadow: 0 0 0 3px rgba(184,54,45,0.18);
}

/* File picker — wrap a real input. */
.file {
  position: relative;
  border: 2px dashed var(--border-maroon);
  border-radius: var(--r-2);
  background: var(--bas-off-white);
  padding: var(--sp-5);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-standard),
              background var(--dur-fast) var(--ease-standard);
}
.file:hover, .file:focus-within {
  border-color: var(--bas-maroon);
  background: var(--bas-maroon-100);
}
.file input[type="file"] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.file__icon {
  width: 36px; height: 36px;
  margin: 0 auto var(--sp-3);
  display: block;
  color: var(--bas-maroon);
}
.file__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--bas-maroon);
  margin: 0 0 var(--sp-1);
}
.file__sub {
  font-size: 13px; color: var(--fg-subtle); margin: 0;
}
.file__preview {
  margin-top: var(--sp-4);
  display: none;
  align-items: center; gap: var(--sp-3);
  text-align: left;
}
.file.is-filled .file__preview { display: flex; }
.file.is-filled .file__placeholder { display: none; }
.file__preview img {
  width: 64px; height: 64px;
  object-fit: cover;
  border-radius: var(--r-1);
  border: 1px solid var(--border-maroon);
}
.file__preview .file__name {
  font-weight: 700; font-size: 14px;
  word-break: break-all;
}
.file__preview .file__meta {
  font-size: 12px; color: var(--fg-subtle);
}
.file__change {
  margin-left: auto;
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--bas-maroon);
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

/* Checkbox */
.check {
  display: flex; gap: var(--sp-3);
  align-items: flex-start;
  cursor: pointer;
  line-height: 1.5;
  padding: var(--sp-3) 0;
}
.check input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 22px; height: 22px;
  min-width: 22px;
  margin: 1px 0 0;
  border: 2px solid var(--bas-maroon);
  border-radius: var(--r-1);
  background: var(--bas-off-white);
  display: grid; place-items: center;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-standard);
}
.check input[type="checkbox"]:checked {
  background: var(--bas-maroon);
}
.check input[type="checkbox"]:checked::after {
  content: "";
  width: 12px; height: 7px;
  border: 2px solid var(--bas-off-white);
  border-top: 0; border-right: 0;
  transform: rotate(-45deg) translate(1px,-1px);
}
.check input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--focus-ring); outline-offset: 2px;
}
.check__text { font-size: 14px; color: var(--fg); }
.check__text a { color: var(--accent-secondary); border-bottom: 1px solid currentColor; }

/* -----------------------------------------------------------------------------
   7. Alerts / banners
   -------------------------------------------------------------------------- */
.alert {
  display: flex; gap: var(--sp-3);
  align-items: flex-start;
  padding: var(--sp-4);
  border-radius: var(--r-2);
  font-size: 14px;
  line-height: 1.5;
  border: 1px solid var(--border-maroon);
  background: var(--bas-maroon-100);
  color: var(--fg);
  margin: 0 0 var(--sp-5);
}
.alert--error {
  background: #fbe6e3;
  border-color: rgba(184,54,45,0.35);
  color: #5a1a14;
}
.alert--info {
  background: var(--bas-blue-100);
  border-color: rgba(91,146,204,0.35);
}
.alert__icon { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; }
.alert__body strong { font-weight: 700; }

/* -----------------------------------------------------------------------------
   8. Privacy note
   -------------------------------------------------------------------------- */
.privacy-note {
  display: flex; gap: var(--sp-3);
  align-items: flex-start;
  padding: var(--sp-4);
  border-left: 3px solid var(--bas-maroon);
  background: var(--bas-sage-100);
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-muted);
  border-radius: 0;
}
.privacy-note > img,
.privacy-note > svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.privacy-note strong { color: var(--accent); }

/* -----------------------------------------------------------------------------
   9. Gallery
   -------------------------------------------------------------------------- */
.gallery-head {
  display: flex; flex-direction: column; gap: var(--sp-3);
  margin: 0 0 var(--sp-5);
}
.gallery-meta {
  display: flex; flex-wrap: wrap; gap: var(--sp-4);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}
.gallery-meta span {
  display: inline-flex; align-items: center; gap: var(--sp-2);
}
.gallery-meta strong {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
}
.gallery-actions {
  display: flex; flex-wrap: wrap; gap: var(--sp-3);
  margin: var(--sp-5) 0;
}
.zip-action { flex-direction: column; align-items: stretch; }

.zip-status {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-4);
  border: 1px solid var(--border-maroon);
  border-radius: var(--r-2);
  background: var(--bas-off-white);
}
.zip-status--working { border-style: dashed; }
.zip-status__spinner {
  flex: none;
  width: 28px; height: 28px;
  border: 3px solid var(--border-maroon);
  border-top-color: var(--bas-maroon);
  border-radius: 50%;
  animation: spin 720ms linear infinite;
}
.zip-status__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--accent);
}
.zip-status__sub {
  margin: var(--sp-2) 0 0;
  color: var(--fg-muted);
  font-size: 14px;
  line-height: 1.5;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  max-width: 560px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); max-width: none; gap: var(--sp-5); }
}

/* Photo card */
.photo {
  display: flex; flex-direction: column;
  background: var(--bas-off-white);
  border: 1px solid var(--border-maroon);
  border-radius: var(--r-2);
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-standard);
}
.photo__thumb {
  position: relative;
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--bas-sage-100);
  overflow: hidden;
  border: 0;
  outline: 0;
}
.photo__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--dur-base) var(--ease-standard);
}
.photo__thumb:hover img { transform: scale(1.03); }
.photo__thumb:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; }

.photo__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border-maroon);
}
.photo__btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  border: 0;
  padding: var(--sp-3) var(--sp-3);
  min-height: 48px;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--sp-2);
  color: var(--accent);
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard);
}
.photo__btn--download:hover {
  background: var(--bas-maroon);
  color: var(--bas-off-white);
}
.photo__btn--report {
  border-left: 1px solid var(--border-maroon);
  color: var(--bas-danger);
}
.photo__btn--report:hover {
  background: var(--bas-danger);
  color: var(--bas-off-white);
}
.photo__btn svg { width: 16px; height: 16px; }

/* Hidden card (HTMX swap result) */
.photo--hidden {
  border: 1px dashed var(--border-maroon);
  background: var(--bas-sage-100);
  aspect-ratio: 1 / 1;
  padding: var(--sp-4);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  font-size: 12px;
  color: var(--fg-subtle);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 700;
}

/* Empty / error states */
.empty {
  padding: var(--sp-7) var(--sp-4);
  text-align: center;
  border: 1px dashed var(--border-maroon);
  border-radius: var(--r-2);
  background: var(--bas-sage-100);
}
.empty img { width: 40px; margin: 0 auto var(--sp-4); opacity: 0.6; }
.empty h2 { margin-bottom: var(--sp-3); }
.empty p { color: var(--fg-muted); max-width: 38ch; margin: 0 auto var(--sp-3); }

/* -----------------------------------------------------------------------------
   10. Event header (gallery title block)
   -------------------------------------------------------------------------- */
.event-head {
  border-bottom: 1px solid var(--border-maroon);
  padding-bottom: var(--sp-5);
  margin-bottom: var(--sp-5);
}
.event-head .overline { margin-bottom: var(--sp-2); }
.event-head h1 { margin-bottom: var(--sp-3); }

/* -----------------------------------------------------------------------------
   11. Upload loading overlay (form submit feedback)
   -------------------------------------------------------------------------- */
.loading {
  position: fixed; inset: 0;
  background: rgba(254,252,237,0.95);
  display: none;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: var(--sp-4);
  z-index: 100;
  padding: var(--sp-5);
  text-align: center;
}
.loading.is-active { display: flex; }
.loading__spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--border-maroon);
  border-top-color: var(--bas-maroon);
  border-radius: 50%;
  animation: spin 720ms linear infinite;
}
.loading__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
.loading__sub { color: var(--fg-muted); font-size: 14px; margin: 0; max-width: 36ch; }
@keyframes spin { to { transform: rotate(360deg); } }

/* -----------------------------------------------------------------------------
   12. Process steps (submitted page)
   -------------------------------------------------------------------------- */
.steps {
  list-style: none;
  padding: 0;
  margin: var(--sp-5) 0;
  display: flex; flex-direction: column;
  gap: var(--sp-3);
}
.steps li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border-maroon);
  align-items: start;
}
.steps li:last-child { border-bottom: 0; }
.steps__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  color: var(--bas-maroon);
}
.steps__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg);
  margin: 0 0 2px;
}
.steps__body { font-size: 14px; color: var(--fg-muted); margin: 0; line-height: 1.45; }

/* -----------------------------------------------------------------------------
   13. Decorative corner stamp (off-grid)
   -------------------------------------------------------------------------- */
.stamp {
  position: absolute;
  width: 80px; height: 80px;
  opacity: 0.85;
  pointer-events: none;
}
.stamp--tr { top: var(--sp-6); right: var(--sp-5); }
.stamp--br { bottom: var(--sp-6); right: var(--sp-5); }

.relative { position: relative; }

/* -----------------------------------------------------------------------------
   14. Print: hide non-essential
   -------------------------------------------------------------------------- */
@media print {
  .topbar, .footer, .gallery-actions, .photo__actions { display: none !important; }
}