/* ─────────────────────────────────────────────
   KeyProbe — API Key Tester
   Clean professional light mode · Google Sans
───────────────────────────────────────────── */

:root {
  --bg:             #f8f9fc;
  --bg-alt:         #f1f3f8;
  --surface:        #ffffff;
  --surface-hover:  #f5f6fa;
  --border:         #e2e5ed;
  --border-active:  #c5cad8;
  --text-primary:   #111827;
  --text-secondary: #4b5563;
  --text-muted:     #9ca3af;
  --accent:         #1a73e8;
  --accent-light:   #e8f0fe;
  --accent-glow:    rgba(26,115,232,0.15);
  --success:        #0f9d58;
  --success-bg:     #e6f4ea;
  --success-border: #a8d5b5;
  --success-text:   #137333;
  --error:          #d93025;
  --error-bg:       #fce8e6;
  --error-border:   #f5a9a4;
  --error-text:     #c5221f;
  --warn-bg:        #fef9e7;
  --warn-border:    #f5d87a;
  --warn-text:      #b06000;
  --radius-sm:      10px;
  --font:           'Google Sans', 'Product Sans', -apple-system, sans-serif;
  --font-mono:      'Google Sans Mono', 'Roboto Mono', monospace;
  --tr:             0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm:      0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:      0 12px 40px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-xl:      0 24px 64px rgba(0,0,0,0.14), 0 8px 24px rgba(0,0,0,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Dot grid background ── */
.grid-overlay {
  position: fixed; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, #dde1ea 1px, transparent 0);
  background-size: 28px 28px;
  opacity: 0.65;
  pointer-events: none;
  z-index: 0;
}
.grid-overlay::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 700px 500px at 10% 0%,   rgba(26,115,232,0.05) 0%, transparent 70%),
    radial-gradient(ellipse 500px 400px at 90% 100%, rgba(15,157,88,0.04)  0%, transparent 70%);
}

/* ─────────────────────────────────────────────
   MODAL OVERLAY
───────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(17, 24, 39, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}
.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ── Modal box ── */
.modal-box {
  position: relative;
  width: 100%; max-width: 520px;
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  transform: translateY(24px) scale(0.97);
  transition: transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-overlay.open .modal-box {
  transform: translateY(0) scale(1);
}

/* colour variants */
.modal-success { border-top: 4px solid var(--success); }
.modal-error   { border-top: 4px solid var(--error); }
.modal-warn    { border-top: 4px solid #f9a825; }

/* ── Close button ── */
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: background var(--tr), color var(--tr), border-color var(--tr);
  z-index: 2;
}
.modal-close svg { width: 15px; height: 15px; }
.modal-close:hover { background: var(--surface-hover); color: var(--text-primary); border-color: var(--border-active); }

/* ── Modal header ── */
.modal-header {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 28px 28px 18px;
}
.modal-icon-wrap {
  flex-shrink: 0;
}
.modal-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  animation: iconPop 0.4s cubic-bezier(0.34,1.56,0.64,1) 0.1s both;
}
.modal-success .modal-icon { background: rgba(15,157,88,0.1); }
.modal-error   .modal-icon { background: rgba(217,48,37,0.08); }
.modal-warn    .modal-icon { background: rgba(249,168,37,0.1); }

@keyframes iconPop {
  from { transform: scale(0.4); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.modal-header-text { flex: 1; min-width: 0; padding-top: 4px; }
.modal-title {
  font-size: 1.15rem; font-weight: 700;
  line-height: 1.2; margin-bottom: 6px;
}
.modal-success .modal-title { color: var(--success-text); }
.modal-error   .modal-title { color: var(--error-text); }
.modal-warn    .modal-title { color: var(--warn-text); }

.modal-msg {
  font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6;
}

/* ── Detail pills ── */
.modal-details {
  display: flex; flex-wrap: wrap; gap: 7px;
  padding: 0 28px 18px;
}
.detail-pill {
  display: flex; align-items: center; gap: 5px;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 99px; padding: 5px 12px;
  font-family: var(--font-mono); font-size: 0.72rem;
}
.pill-label { color: var(--text-muted); margin-right: 2px; }
.pill-val   { color: var(--text-primary); font-weight: 500; }

/* ── Extra info block ── */
.modal-extra { padding: 0 28px 20px; }

.extra-block { border-radius: 10px; overflow: hidden; }
.extra-success { background: rgba(15,157,88,0.06);  border: 1px solid rgba(15,157,88,0.2); }
.extra-error   { background: rgba(217,48,37,0.04);  border: 1px solid rgba(217,48,37,0.16); }
.extra-warn    { background: rgba(249,168,37,0.07); border: 1px solid rgba(249,168,37,0.28); }

.extra-row {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 16px 12px;
}
.extra-ico { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; }
.extra-success .extra-ico { color: var(--success-text); }
.extra-error   .extra-ico { color: var(--error-text); }
.extra-warn    .extra-ico { color: var(--warn-text); }

.extra-title {
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.07em; text-transform: uppercase; margin-bottom: 4px;
}
.extra-success .extra-title { color: var(--success-text); }
.extra-error   .extra-title { color: var(--error-text); }
.extra-warn    .extra-title { color: var(--warn-text); }

.extra-desc { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.6; }

/* Stats row (success) */
.extra-stat-row {
  display: flex;
  border-top: 1px solid rgba(15,157,88,0.15);
}
.extra-stat {
  flex: 1;
  display: flex; flex-direction: column; align-items: center;
  padding: 12px 8px; gap: 3px;
  border-right: 1px solid rgba(15,157,88,0.15);
}
.extra-stat:last-child { border-right: none; }
.stat-val {
  font-size: 0.88rem; font-weight: 700;
  color: var(--success-text); font-family: var(--font-mono);
}
.stat-lbl {
  font-size: 0.67rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500;
}

/* Tip row (error / warn) */
.extra-tip-row {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 16px 14px;
  background: rgba(255,255,255,0.6);
  border-top: 1px solid rgba(0,0,0,0.06);
}
.tip-ico  { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; color: var(--accent); }
.tip-label { font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); }
.tip-text  { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.55; }

/* ── Modal footer ── */
.modal-footer {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 28px 24px;
  border-top: 1px solid var(--border);
}
.modal-copy-btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 16px;
  color: var(--text-secondary);
  font-family: var(--font); font-size: 0.84rem; font-weight: 500;
  cursor: pointer; box-shadow: var(--shadow-sm);
  transition: border-color var(--tr), color var(--tr), box-shadow var(--tr), background var(--tr);
}
.modal-copy-btn svg { width: 14px; height: 14px; }
.modal-copy-btn:hover { border-color: var(--border-active); color: var(--text-primary); box-shadow: var(--shadow-md); }

.modal-again-btn {
  margin-left: auto;
  display: inline-flex; align-items: center;
  background: var(--accent); border: none;
  border-radius: var(--radius-sm); padding: 10px 20px;
  color: #fff;
  font-family: var(--font); font-size: 0.84rem; font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(26,115,232,0.28);
  transition: background var(--tr), box-shadow var(--tr), transform var(--tr);
}
.modal-again-btn:hover { background: #1558c0; box-shadow: 0 4px 16px rgba(26,115,232,0.36); transform: translateY(-1px); }
.modal-again-btn:active { transform: translateY(0); }

/* ─────────────────────────────────────────────
   PAGE LAYOUT
───────────────────────────────────────────── */
.page {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center;
  padding: 56px 20px 80px; gap: 24px;
}

/* ── Hero ── */
.hero { text-align: center; max-width: 600px; }
.badge-row { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 22px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: #e6f4ea; border: 1px solid #a8d5b5; color: #137333;
  font-family: var(--font); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 12px; border-radius: 99px;
}
.badge-text { color: var(--text-muted); font-size: 0.75rem; font-weight: 500; }

.pulse-dot::before {
  content: ''; display: inline-block;
  width: 7px; height: 7px;
  background: var(--success); border-radius: 50%;
  animation: pulse-ring 2.2s ease infinite;
}
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(15,157,88,0.5); }
  70%  { box-shadow: 0 0 0 7px rgba(15,157,88,0); }
  100% { box-shadow: 0 0 0 0 rgba(15,157,88,0); }
}

.hero-title {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  font-weight: 700; line-height: 1.12;
  letter-spacing: -0.025em; margin-bottom: 14px;
}
.accent { color: var(--accent); }
.hero-sub { font-size: 1rem; color: var(--text-secondary); line-height: 1.65; }

/* ── Card ── */
.card {
  width: 100%; max-width: 540px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px; padding: 36px 40px;
  display: flex; flex-direction: column; gap: 22px;
  box-shadow: var(--shadow-md);
  /* overflow must NOT be hidden — dropdowns need to escape the card */
  overflow: visible;
  transition: box-shadow var(--tr), border-color var(--tr);
}
.card:focus-within { border-color: #bccef8; box-shadow: var(--shadow-lg), 0 0 0 3px rgba(26,115,232,0.08); }

/* ── Field groups ── */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;  /* needed so z-index works */
  z-index: 1;          /* base — siblings stack in DOM order */
}
.field-group.hidden { display: none; }
/* When a dropdown inside this group is open, boost the whole group
   above every sibling that comes later in the DOM */
.field-group:has(.dropdown-list.open) {
  z-index: 100;
}
.field-group.slide-in { animation: slideIn 0.28s cubic-bezier(0.4,0,0.2,1) forwards; }
/* JS fallback for browsers without :has() support */
.field-group.fg-open {
  z-index: 100 !important;
}
/* Elements that must sit BELOW an open dropdown */
.disclaimer,
.test-btn,
.reset-btn {
  position: relative;
  z-index: 1;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.field-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary);
}
.step-num {
  font-size: 0.64rem; font-weight: 700; color: var(--accent);
  background: var(--accent-light); border: 1px solid #bccef8;
  padding: 2px 7px; border-radius: 4px;
}
.label-hint {
  font-size: 0.7rem; font-weight: 400;
  color: var(--text-muted); text-transform: none; letter-spacing: 0; margin-left: 2px;
}

/* ── Search inputs ── */
.select-wrapper {
  position: relative;
  z-index: 10;
}
.select-wrapper.open {
  z-index: 200;
}
.select-input {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 44px 12px 14px;
  color: var(--text-primary); font-family: var(--font); font-size: 0.92rem;
  outline: none; -webkit-appearance: none; appearance: none;
  transition: border-color var(--tr), box-shadow var(--tr), background var(--tr);
}
.select-input::placeholder { color: var(--text-muted); }
.select-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); background: #fff; }

.select-icon {
  position: absolute; right: 13px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; color: var(--text-muted); pointer-events: none;
  transition: transform var(--tr), color var(--tr);
}
.select-wrapper.open .select-icon { transform: translateY(-50%) rotate(180deg); color: var(--accent); }

/* ── Dropdown list ── */
.dropdown-list {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #ffffff;
  border: 1.5px solid #c8ccd8;
  border-radius: 10px;
  max-height: 264px;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 9999;
  list-style: none;
  padding: 5px;
  display: none;
  box-shadow:
    0 4px 6px rgba(0,0,0,0.04),
    0 10px 24px rgba(0,0,0,0.10),
    0 20px 48px rgba(0,0,0,0.08);
  animation: dropDown 0.15s ease forwards;
}
.dropdown-list.open { display: block; }
@keyframes dropDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dropdown-list::-webkit-scrollbar { width: 4px; }
.dropdown-list::-webkit-scrollbar-track { background: transparent; }
.dropdown-list::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 4px; }

/* Every item: explicit white bg, dark text, generous padding */
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 7px;
  cursor: pointer;
  background: #ffffff;
  color: #111827;
  font-family: 'Google Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.3;
  user-select: none;
  transition: background 0.12s ease, color 0.12s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dropdown-item span:last-of-type {
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 1;
  color: #111827;
}
.dropdown-item:hover {
  background: #eef2ff;
  color: #1a56db;
}
.dropdown-item:hover span:last-of-type { color: #1a56db; }

.dropdown-item.highlighted {
  background: #e8f0fe;
  color: #1a73e8;
}
.dropdown-item.highlighted span:last-of-type { color: #1a73e8; }

.dropdown-item.selected {
  background: #e8f0fe;
  color: #1a73e8;
  font-weight: 600;
}
.dropdown-item.selected span:last-of-type { color: #1a73e8; }

/* Provider icon chip */
.provider-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #1a73e8;
}

/* Model icon chip */
.model-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6b7280;
}
.model-icon svg { width: 11px; height: 11px; }

/* Custom model entry row */
.custom-icon {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}
.dropdown-item-custom {
  margin-top: 3px;
  border-top: 1px solid #f3f4f6;
  padding-top: 10px;
  color: #1a73e8;
  font-weight: 500;
}
.dropdown-item-custom .model-icon { background: #eff6ff; border-color: #bfdbfe; color: #1d4ed8; }
.dropdown-item-custom:hover  { background: #eff6ff; color: #1d4ed8; }
.dropdown-item-custom.highlighted { background: #e0e7ff; color: #1d4ed8; }

.custom-badge {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1d4ed8;
  padding: 2px 8px;
  border-radius: 99px;
}

.dropdown-empty {
  padding: 20px 12px;
  text-align: center;
  color: #9ca3af;
  font-size: 0.84rem;
  font-family: 'Google Sans', sans-serif;
}

/* ── Key input ── */
.key-input-wrapper { position: relative; display: flex; align-items: center; }
.key-input {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 110px 12px 14px;
  color: var(--text-primary); font-family: var(--font-mono); font-size: 0.86rem;
  letter-spacing: 0.03em; outline: none;
  transition: border-color var(--tr), box-shadow var(--tr), background var(--tr);
}
.key-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); background: #fff; }
.key-input::placeholder { color: var(--text-muted); font-family: var(--font); letter-spacing: 0; }

.key-actions { position: absolute; right: 8px; display: flex; gap: 2px; }
.icon-btn {
  width: 32px; height: 32px; background: transparent; border: none; border-radius: 7px;
  color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--tr), color var(--tr); padding: 0;
}
.icon-btn svg { width: 15px; height: 15px; }
.icon-btn:hover { background: var(--bg-alt); color: var(--text-primary); }
.icon-btn:active { transform: scale(0.92); }

/* ── Disclaimer ── */
.disclaimer {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.76rem; color: var(--text-muted); line-height: 1.6;
  padding: 12px 14px; background: #f8f9fa; border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.disclaimer svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 1px; color: var(--accent); }
.disclaimer strong { color: var(--text-secondary); font-weight: 600; }

/* ── Test button ── */
.test-btn {
  position: relative; overflow: hidden; width: 100%; padding: 15px;
  background: var(--accent); border: none; border-radius: var(--radius-sm);
  color: #fff; font-family: var(--font); font-size: 0.96rem; font-weight: 600;
  cursor: pointer;
  transition: background var(--tr), transform var(--tr), box-shadow var(--tr), opacity var(--tr);
  box-shadow: 0 2px 8px rgba(26,115,232,0.3);
}
.test-btn:not(:disabled):hover { background: #1558c0; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(26,115,232,0.35); }
.test-btn:not(:disabled):active { transform: translateY(0); }
.test-btn:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; }

.btn-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; gap: 10px; }
.btn-shine {
  position: absolute; top: 0; left: -100%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: skewX(-15deg);
}
.test-btn:not(:disabled):hover .btn-shine { animation: shine 0.55s ease forwards; }
@keyframes shine { to { left: 140%; } }

.btn-spinner {
  width: 17px; height: 17px;
  border: 2px solid rgba(255,255,255,0.35); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Reset button ── */
.reset-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 12px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-secondary); font-family: var(--font); font-size: 0.88rem; font-weight: 500;
  cursor: pointer; box-shadow: var(--shadow-sm);
  transition: border-color var(--tr), color var(--tr), background var(--tr), box-shadow var(--tr);
}
.reset-btn svg { width: 14px; height: 14px; }
.reset-btn:hover { border-color: var(--border-active); color: var(--text-primary); background: var(--surface-hover); box-shadow: var(--shadow-md); }

/* ── Toasts ── */
#toast-container {
  position: fixed; bottom: 24px; right: 24px; z-index: 2000;
  display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
  padding: 11px 16px; font-family: var(--font); font-size: 0.82rem; font-weight: 500;
  color: var(--text-secondary); box-shadow: var(--shadow-lg);
  pointer-events: auto; max-width: 300px;
  animation: toastIn 0.28s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.toast.toast-exit { animation: toastOut 0.22s ease forwards; }
.toast.success { border-color: var(--success-border); }
.toast.error   { border-color: var(--error-border); }
.toast-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.toast.success .toast-dot { background: var(--success); }
.toast.error   .toast-dot { background: var(--error); }
.toast.info    .toast-dot { background: var(--accent); }
@keyframes toastIn  { from { opacity: 0; transform: translateX(14px) scale(0.96); } to { opacity: 1; transform: translateX(0) scale(1); } }
@keyframes toastOut { to   { opacity: 0; transform: translateX(14px) scale(0.96); } }

/* ── Footer ── */
.footer { color: var(--text-muted); font-size: 0.74rem; text-align: center; margin-top: 4px; }

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .card { padding: 24px 18px; }
  .hero-title { font-size: 1.9rem; }
  .modal-header  { padding: 22px 20px 14px; }
  .modal-details { padding: 0 20px 14px; }
  .modal-extra   { padding: 0 20px 16px; }
  .modal-footer  { padding: 14px 20px 20px; flex-direction: column; }
  .modal-again-btn { margin-left: 0; width: 100%; justify-content: center; }
  .modal-copy-btn  { width: 100%; justify-content: center; }
  #toast-container { right: 12px; bottom: 12px; }
}