/* ═══════════════════════════════════════════════════════════
   Secure Message Link — Frontend (Expéditeur) v4.2
   Charte : Blanc & Bleu · Fully Responsive
════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --c-bg:        #f0f5fc;
  --c-surf:      #ffffff;
  --c-surf2:     #f5f8ff;
  --c-surf3:     #e8f0fc;
  --c-border:    #ccd9f0;
  --c-border2:   #b0c8e8;
  --c-accent:    #1d6bc4;
  --c-accent-h:  #1558a8;
  --c-accent-lt: #3b82e8;
  --c-accent-bg: #e8f0fc;
  --c-green:     #0d9f6e;
  --c-red:       #dc2626;
  --c-text:      #0f1d36;
  --c-text-2:    #3b5278;
  --c-text-3:    #7a93b8;
  --font-ui:    'Inter', -apple-system, sans-serif;
  --font-title: 'Space Grotesk', sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --r-sm:  8px;
  --r-md:  14px;
  --r-lg:  20px;
  --r-xl:  28px;
  --panel-pad-h: 36px;
  --panel-pad-v: 40px;
}

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

html { -webkit-text-size-adjust: 100%; }

.sml-view-body {
  background: var(--c-bg);
  min-height: 100dvh;
  min-height: 100vh;
  color: var(--c-text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

/* ── Page wrappers ───────────────────────────────────────── */
.sml-app,
.sml-view-app {
  width: 100%;
  max-width: 620px;
  margin-inline: auto;
  padding: 32px 16px 64px;
  font-family: var(--font-ui);
  color: var(--c-text);
}

/* ── Panel ───────────────────────────────────────────────── */
.sml-panel {
  background: var(--c-surf);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--panel-pad-v) var(--panel-pad-h);
  box-shadow: 0 0 48px rgba(29,107,196,.10), 0 8px 40px rgba(29,107,196,.08);
  animation: sml-fade-up .35s ease both;
}

@keyframes sml-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Panel header ────────────────────────────────────────── */
.sml-panel-header {
  text-align: center;
  margin-bottom: 28px;
}

.sml-lock-icon {
  font-size: clamp(40px, 8vw, 52px);
  display: block;
  text-align: center;
  margin-bottom: 12px;
  animation: sml-rock 3s ease-in-out infinite;
}
@keyframes sml-rock {
  0%,100% { transform: rotate(0); }
  20%     { transform: rotate(-9deg); }
  40%     { transform: rotate(9deg); }
  60%     { transform: rotate(-4deg); }
  80%     { transform: rotate(4deg); }
}

.sml-panel-title {
  font-family: var(--font-title);
  font-size: clamp(20px, 5vw, 28px);
  font-weight: 800;
  color: var(--c-accent);
  margin-bottom: 6px;
  letter-spacing: -.4px;
  line-height: 1.2;
}
.sml-panel-sub {
  color: var(--c-text-2);
  font-size: clamp(13px, 3vw, 15px);
  line-height: 1.55;
}

/* ── Fields ──────────────────────────────────────────────── */
.sml-form { display: flex; flex-direction: column; gap: 0; }

.sml-field { margin-bottom: 16px; }

.sml-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.sml-field-row > .sml-field { margin-bottom: 0; }

.sml-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--c-text-3);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 7px;
}
.sml-opt      { font-weight: 400; opacity: .6; }
.sml-required { color: var(--c-red); }

.sml-input,
.sml-textarea,
.sml-select {
  width: 100%;
  background: var(--c-surf);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  color: var(--c-text);
  font-family: var(--font-ui);
  font-size: 16px; /* ≥16px évite zoom iOS */
  padding: 12px 15px;
  outline: none;
  transition: border-color .18s, box-shadow .18s;
  appearance: none;
  -webkit-appearance: none;
}
.sml-input:focus,
.sml-textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(29,107,196,.15);
}
.sml-input::placeholder,
.sml-textarea::placeholder { color: var(--c-text-3); }
.sml-textarea { resize: vertical; min-height: 110px; }
.sml-mono { font-family: var(--font-mono); font-size: 13px; }

/* ── Color picker ────────────────────────────────────────── */
.sml-color-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 4px;
  align-items: center;
}
.sml-color-dot {
  width: 26px; height: 26px;
  border-radius: 50%;
  cursor: pointer;
  border: 2.5px solid transparent;
  flex-shrink: 0;
  transition: transform .15s, border-color .15s;
}
.sml-color-dot:hover { transform: scale(1.18); }
.sml-color-dot.sml-color-selected { border-color: var(--c-text); transform: scale(1.15); }

/* ── Toggle ──────────────────────────────────────────────── */
.sml-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 4px 0;
}
.sml-toggle-input { display: none; }
.sml-toggle-track {
  width: 44px; height: 24px;
  border-radius: 12px;
  background: var(--c-border);
  border: 1.5px solid var(--c-border2);
  position: relative;
  flex-shrink: 0;
  transition: background .2s, border-color .2s;
}
.sml-toggle-track::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
  transition: left .2s;
}
.sml-toggle-input:checked + .sml-toggle-track {
  background: var(--c-accent);
  border-color: var(--c-accent);
}
.sml-toggle-input:checked + .sml-toggle-track::after { left: 23px; }
.sml-toggle-label { font-size: 14px; color: var(--c-text-2); line-height: 1.4; }

/* ── Animation selector ──────────────────────────────────── */
.sml-anim-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 6px;
}
.sml-anim-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 6px 10px;
  background: var(--c-surf2);
  border: 2px solid var(--c-border);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: border-color .18s, background .18s;
  user-select: none;
}
.sml-anim-card:hover { border-color: var(--c-accent-lt); background: var(--c-accent-bg); }
.sml-anim-card.sml-anim-selected {
  border-color: var(--c-accent);
  background: var(--c-accent-bg);
  box-shadow: 0 0 0 3px rgba(29,107,196,.15);
}
.sml-anim-radio   { display: none; }
.sml-anim-preview { font-size: 22px; line-height: 1; }
.sml-anim-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--c-text-2);
  text-align: center;
  line-height: 1.3;
}
.sml-anim-card.sml-anim-selected .sml-anim-label { color: var(--c-accent); }

/* ── Upload zone ─────────────────────────────────────────── */
.sml-upload-zone {
  border: 2px dashed var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surf2);
  position: relative;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  min-height: 88px;
  overflow: hidden;
}
.sml-upload-zone:hover { border-color: var(--c-accent); background: var(--c-accent-bg); }
.sml-file-input {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.sml-upload-inner { text-align: center; padding: 20px 16px; pointer-events: none; }
.sml-upload-icon  { font-size: 28px; }
.sml-upload-text  { margin: 4px 0; font-weight: 500; font-size: 14px; color: var(--c-text-2); }
.sml-upload-hint  { font-size: 12px; color: var(--c-text-3); }
.sml-upload-preview {
  padding: 12px;
  text-align: center;
}
.sml-upload-preview img,
.sml-upload-preview video {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--r-sm);
  display: block;
  margin-inline: auto;
}

/* ── Alerts ──────────────────────────────────────────────── */
.sml-alert {
  padding: 12px 15px;
  border-radius: var(--r-sm);
  font-size: 14px;
  margin-bottom: 14px;
  line-height: 1.5;
}
.sml-alert-error   { background: rgba(220,38,38,.08);  border: 1px solid rgba(220,38,38,.25);  color: #b91c1c; }
.sml-alert-success { background: rgba(13,159,110,.08); border: 1px solid rgba(13,159,110,.25); color: #065f46; }

/* ── Submit button ───────────────────────────────────────── */
.sml-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background: linear-gradient(135deg, var(--c-accent), #1e40af);
  color: #fff;
  border: none;
  border-radius: var(--r-md);
  padding: 15px 24px;
  font-family: var(--font-title);
  font-size: clamp(14px, 4vw, 16px);
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: transform .15s, box-shadow .15s, opacity .15s;
  box-shadow: 0 6px 24px rgba(29,107,196,.35);
  letter-spacing: .02em;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.sml-submit-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(29,107,196,.48); }
.sml-submit-btn:active:not(:disabled){ transform: translateY(0); }
.sml-submit-btn:disabled { opacity: .45; cursor: not-allowed; }

.sml-btn-ghost {
  display: block;
  width: 100%;
  text-align: center;
  background: transparent;
  color: var(--c-text-2);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 13px;
  font-size: 15px;
  cursor: pointer;
  margin-top: 12px;
  transition: color .2s, border-color .2s;
  text-decoration: none;
  font-family: var(--font-ui);
  touch-action: manipulation;
}
.sml-btn-ghost:hover { color: var(--c-accent); border-color: var(--c-accent); }

/* ── Code gate : 3 cases chiffres, fond blanc ────────────── */
.sml-code-input-row {
  display: flex;
  gap: clamp(12px, 4vw, 20px);
  justify-content: center;
  margin: 28px 0 20px;
}
.sml-code-char {
  width: clamp(70px, 22vw, 90px);
  height: clamp(80px, 24vw, 100px);
  background: #ffffff;
  border: 2.5px solid var(--c-border2);
  border-radius: var(--r-lg);
  text-align: center;
  font-family: var(--font-mono);
  font-size: clamp(30px, 9vw, 42px);
  font-weight: 700;
  color: var(--c-accent);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  caret-color: transparent;
  box-shadow: 0 2px 8px rgba(29,107,196,.08);
  -webkit-appearance: none;
  appearance: none;
}
.sml-code-char:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(29,107,196,.18);
  background: #ffffff;
}
.sml-code-char.filled {
  border-color: var(--c-accent);
  background: #ffffff;
}

/* ── Code display (résultat) ─────────────────────────────── */
.sml-code-display {
  font-family: var(--font-mono);
  font-size: clamp(40px, 14vw, 64px);
  letter-spacing: clamp(12px, 4vw, 22px);
  color: var(--c-accent);
  font-weight: 700;
  padding: 14px 8px;
  background: var(--c-accent-bg);
  border-radius: var(--r-md);
  margin: 8px 0 4px;
  display: block;
  text-align: center;
}

/* ── Result cards ────────────────────────────────────────── */
.sml-result-card {
  background: var(--c-surf2);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 12px;
}
.sml-result-code-card { text-align: center; }
.sml-result-header    { text-align: center; margin-bottom: 24px; }

.sml-hint { font-size: 12px; color: var(--c-text-3); margin-top: 4px; }

.sml-copy-row { display: flex; gap: 8px; align-items: stretch; }
.sml-copy-row .sml-input { flex: 1; min-width: 0; font-size: 13px; }
.sml-copy-btn {
  flex-shrink: 0;
  background: var(--c-surf3);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-sm);
  color: var(--c-text);
  font-size: 18px;
  padding: 0 14px;
  cursor: pointer;
  transition: background .15s, color .15s;
  touch-action: manipulation;
}
.sml-copy-btn:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }

/* ── Success icon ────────────────────────────────────────── */
.sml-success-icon {
  font-size: clamp(44px, 10vw, 56px);
  display: block;
  margin-bottom: 10px;
  animation: sml-bounce .5s cubic-bezier(.36,.07,.19,.97);
  text-align: center;
}
@keyframes sml-bounce { 0%,100%{transform:scale(1)} 30%{transform:scale(1.28)} 60%{transform:scale(.95)} }

/* ── Share row ───────────────────────────────────────────── */
.sml-share-section { margin-bottom: 8px; }
.sml-share-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.sml-share-btn {
  flex: 1;
  min-width: 80px;
  text-align: center;
  padding: 11px 12px;
  border-radius: var(--r-sm);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  color: #fff;
  font-family: var(--font-title);
  transition: opacity .15s, transform .15s;
  touch-action: manipulation;
}
.sml-share-btn:hover { opacity: .88; transform: translateY(-2px); }
.sml-share-wa { background: #25D366; }
.sml-share-tg { background: #229ED9; }
.sml-share-fb { background: #1877F2; }

/* ── Message view (destinataire) ─────────────────────────── */
.sml-msg-header {
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  padding: 20px 22px;
  margin: calc(-1 * var(--panel-pad-v)) calc(-1 * var(--panel-pad-h)) 22px;
  background: linear-gradient(135deg, var(--c-surf2), var(--c-surf3));
  border-bottom: 1.5px solid var(--c-border);
}
.sml-msg-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.sml-msg-from { font-size: 13px; color: var(--c-accent); font-weight: 600; }
.sml-msg-date { font-size: 12px; color: var(--c-text-3); }
.sml-msg-title {
  font-family: var(--font-title);
  font-size: clamp(18px, 5vw, 22px);
  font-weight: 800;
  color: var(--c-text);
}

.sml-msg-body {
  font-size: clamp(14px, 4vw, 16px);
  line-height: 1.75;
  color: var(--c-text);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  margin-bottom: 18px;
}

.sml-msg-stats {
  font-size: 13px;
  color: var(--c-text-3);
  margin-bottom: 20px;
}

/* ── Media (message view) ────────────────────────────────── */
.sml-msg-media {
  margin-bottom: 18px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--c-surf2);
  border: 1.5px solid var(--c-border);
}
.sml-msg-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 400px;
}
.sml-msg-media video,
.sml-msg-media audio {
  display: block;
  width: 100%;
  max-width: 100%;
}
.sml-msg-media audio { padding: 12px; }

/* ── Chat section ────────────────────────────────────────── */
.sml-chat-section {
  border-top: 1.5px solid var(--c-border);
  padding-top: 20px;
  margin-top: 4px;
}
.sml-chat-title {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 14px;
}
.sml-chat-thread {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}
.sml-chat-bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.55;
  max-width: 85%;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.sml-chat-bubble-recipient {
  background: var(--c-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
  align-self: flex-end;
  margin-left: auto;
}
.sml-chat-bubble-sender {
  background: var(--c-surf2);
  border: 1.5px solid var(--c-border);
  color: var(--c-text);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}
.sml-chat-meta {
  font-size: 11px;
  opacity: .65;
  margin-top: 4px;
}
.sml-chat-compose {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sml-textarea-sm {
  font-size: 15px;
  min-height: 80px;
}
.sml-btn-reply {
  align-self: flex-end;
  background: var(--c-accent);
  color: #fff;
  border: none;
  border-radius: var(--r-md);
  padding: 10px 20px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: background .15s, transform .15s;
  touch-action: manipulation;
}
.sml-btn-reply:hover { background: var(--c-accent-h); transform: translateY(-1px); }

/* ── Panel error ─────────────────────────────────────────── */
.sml-panel-error { text-align: center; }
.sml-big-icon { font-size: clamp(44px, 10vw, 60px); display: block; margin-bottom: 14px; }
.sml-panel-error h2 {
  font-family: var(--font-title);
  font-size: clamp(18px, 5vw, 22px);
  font-weight: 800;
  color: var(--c-text);
  margin-bottom: 8px;
}
.sml-panel-error p { color: var(--c-text-2); margin-bottom: 20px; font-size: 15px; }

/* ── Animations applicables au corps du message ──────────── */
@keyframes sml-kf-fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes sml-kf-slideUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sml-kf-bounce  { 0%,100%{transform:translateY(0)} 20%{transform:translateY(-18px)} 40%{transform:translateY(0)} 60%{transform:translateY(-8px)} 80%{transform:translateY(0)} }
@keyframes sml-kf-zoom    { from { opacity: 0; transform: scale(.7); } to { opacity: 1; transform: scale(1); } }
@keyframes sml-kf-pulse   { 0%,100%{transform:scale(1)} 50%{transform:scale(1.04)} }
@keyframes sml-kf-shake   { 0%,100%{transform:translateX(0)} 15%{transform:translateX(-10px)} 30%{transform:translateX(10px)} 45%{transform:translateX(-8px)} 60%{transform:translateX(8px)} 75%{transform:translateX(-4px)} 90%{transform:translateX(4px)} }

.sml-anim-fadeIn  { animation: sml-kf-fadeIn  .7s ease forwards; }
.sml-anim-slideUp { animation: sml-kf-slideUp .65s ease forwards; }
.sml-anim-bounce  { animation: sml-kf-bounce  .9s ease; }
.sml-anim-zoom    { animation: sml-kf-zoom    .55s cubic-bezier(.34,1.56,.64,1) forwards; }
.sml-anim-pulse   { animation: sml-kf-pulse   1.2s ease 3; }
.sml-anim-shake   { animation: sml-kf-shake   .75s ease; }

/* ══════════════════════════════════════════════════════════
   RESPONSIVE — tablette & mobile
══════════════════════════════════════════════════════════ */

/* Tablette (≤ 768px) */
@media (max-width: 768px) {
  .sml-app,
  .sml-view-app {
    padding: 24px 12px 56px;
  }

  .sml-panel {
    --panel-pad-h: 24px;
    --panel-pad-v: 28px;
    border-radius: var(--r-lg);
  }

  .sml-field-row {
    grid-template-columns: 1fr;
  }
  .sml-field-row > .sml-field { margin-bottom: 14px; }
  .sml-field-row > .sml-field:last-child { margin-bottom: 0; }

  .sml-anim-grid { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .sml-anim-preview { font-size: 18px; }
  .sml-anim-label   { font-size: 9px; }

  .sml-share-row { gap: 6px; }
  .sml-share-btn { font-size: 13px; padding: 10px 8px; }
}

/* Mobile (≤ 480px) */
@media (max-width: 480px) {
  .sml-app,
  .sml-view-app {
    padding: 16px 10px 52px;
  }

  .sml-panel {
    --panel-pad-h: 16px;
    --panel-pad-v: 22px;
    border-radius: var(--r-md);
  }

  /* Code gate : cases bien centrées */
  .sml-code-input-row {
    gap: 12px;
    margin: 22px 0 16px;
  }
  .sml-code-char {
    width: clamp(60px, 26vw, 80px);
    height: clamp(68px, 28vw, 88px);
    font-size: clamp(26px, 10vw, 36px);
    border-radius: var(--r-md);
  }

  /* Grille animation 2×4 sur petit écran */
  .sml-anim-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .sml-anim-card { padding: 10px 6px 8px; }
  .sml-anim-preview { font-size: 20px; }
  .sml-anim-label   { font-size: 10px; }

  /* Boutons partage empilés */
  .sml-share-row { flex-direction: column; }
  .sml-share-btn { min-width: 0; }

  /* Chat bubbles */
  .sml-chat-bubble { max-width: 92%; }

  /* Media pleine largeur */
  .sml-msg-media img { max-height: 280px; }

  /* Bouton répondre pleine largeur */
  .sml-btn-reply { align-self: stretch; width: 100%; text-align: center; }

  /* Copy row */
  .sml-copy-btn { padding: 0 10px; font-size: 16px; }
}

/* Très petit écran (≤ 360px) */
@media (max-width: 360px) {
  .sml-code-char {
    width: clamp(52px, 28vw, 72px);
    height: clamp(60px, 30vw, 80px);
    font-size: clamp(22px, 11vw, 32px);
  }
  .sml-panel-title { font-size: 18px; }
}

/* Safari iOS : évite le zoom auto sur focus input */
@supports (-webkit-touch-callout: none) {
  .sml-input,
  .sml-textarea,
  .sml-code-char { font-size: 16px; }
}