/*
**  Password Meter — Stylesheet
**  Created by Jeff Todnem (https://www.todnem.com/)
*/

/* ── Custom properties ───────────────────────────────────────────────────── */

:root {
  --bg:             #0f1117;
  --surface:        #1a1d27;
  --surface-raised: #22263a;
  --border:         #2e3349;

  --text:           #e8eaf0;
  --text-muted:     #8b90a7;
  --text-dim:       #565c7a;

  --accent:         #4f7ef8;
  --accent-hover:   #6690ff;

  /* Strength levels */
  --s1: #ef4444;
  --s2: #f97316;
  --s3: #eab308;
  --s4: #22c55e;
  --s5: #06b6d4;

  /* Feedback types */
  --fb-bad:   #ef4444;
  --fb-warn:  #fb923c;
  --fb-ok:    #22c55e;
  --fb-great: #06b6d4;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  --ease: 0.2s ease;
}

/* ── Reset ───────────────────────────────────────────────────────────────── */

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

/* Ensure author display rules don't override the hidden attribute */
[hidden] { display: none !important; }

/* ── Base ────────────────────────────────────────────────────────────────── */

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 3rem 1rem 5rem;
}

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

a:hover {
  text-decoration: underline;
}

/* ── App wrapper ─────────────────────────────────────────────────────────── */

#app {
  width: 100%;
  max-width: 520px;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.app-header {
  text-align: center;
  margin-bottom: 1.75rem;
}

.app-logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: inherit;
  margin-bottom: 0.25rem;
}

.app-logo-link:hover {
  text-decoration: none;
}

.app-logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.app-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.app-header p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ── Card ────────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Password input ──────────────────────────────────────────────────────── */

.input-wrap {
  position: relative;
}

#pwd-input {
  width: 100%;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.8125rem 5.5rem 0.8125rem 1rem;
  outline: none;
  transition: border-color var(--ease), box-shadow var(--ease);
  /* Prevent browser password manager icons from overlapping */
  -webkit-text-security: disc;
}

#pwd-input[type="text"] {
  -webkit-text-security: none;
}

#pwd-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 126, 248, 0.18);
}

#pwd-input::placeholder {
  color: var(--text-dim);
  font-family: var(--font);
}

.input-actions {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 2px;
}

/* ── Icon buttons ────────────────────────────────────────────────────────── */

.icon-btn {
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--ease), background var(--ease);
  line-height: 0;
}

.icon-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.btn--copied {
  color: var(--fb-ok) !important;
}

/* ── Strength bar ────────────────────────────────────────────────────────── */

.strength-bar {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.strength-segments {
  display: flex;
  flex: 1;
  gap: 5px;
}

.segment {
  height: 5px;
  flex: 1;
  border-radius: 3px;
  background: var(--border);
  transition: background var(--ease);
}

/* Light up segments by data-level on parent */
.strength-bar[data-level="1"] .segment:nth-child(-n+1) { background: var(--s1); }
.strength-bar[data-level="2"] .segment:nth-child(-n+2) { background: var(--s2); }
.strength-bar[data-level="3"] .segment:nth-child(-n+3) { background: var(--s3); }
.strength-bar[data-level="4"] .segment:nth-child(-n+4) { background: var(--s4); }
.strength-bar[data-level="5"] .segment:nth-child(-n+5) { background: var(--s5); }

.strength-label {
  font-size: 0.8125rem;
  font-weight: 600;
  min-width: 6.5rem;
  text-align: right;
  color: var(--text-dim);
  transition: color var(--ease);
  white-space: nowrap;
}

.strength-label[data-level="1"] { color: var(--s1); }
.strength-label[data-level="2"] { color: var(--s2); }
.strength-label[data-level="3"] { color: var(--s3); }
.strength-label[data-level="4"] { color: var(--s4); }
.strength-label[data-level="5"] { color: var(--s5); }

/* ── Feedback list ───────────────────────────────────────────────────────── */

.feedback-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 0;
}

.feedback-list:empty {
  display: none;
}

.feedback-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  line-height: 1.4;
}

.fi-icon {
  flex-shrink: 0;
  margin-top: 1px;
  line-height: 0;
}

.fi-icon svg {
  width: 15px;
  height: 15px;
}

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

.feedback-item--bad  .fi-icon { color: var(--fb-bad); }
.feedback-item--warn .fi-icon { color: var(--fb-warn); }
.feedback-item--ok   .fi-icon { color: var(--fb-ok); }
.feedback-item--great .fi-icon { color: var(--fb-great); }

.feedback-item--bad   .fi-text { color: #fca5a5; }
.feedback-item--warn  .fi-text { color: #fdba74; }
.feedback-item--ok    .fi-text { color: #86efac; }
.feedback-item--great .fi-text { color: #67e8f9; }

/* ── Divider ─────────────────────────────────────────────────────────────── */

.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-dim);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Generator section ───────────────────────────────────────────────────── */

.generator-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Length row ──────────────────────────────────────────────────────────── */

.gen-length-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.gen-length-row label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  min-width: 7.5rem;
}

#gen-length-display {
  color: var(--text);
  font-weight: 600;
}

.gen-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}

.gen-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--surface);
  transition: transform var(--ease), background var(--ease);
}

.gen-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  background: var(--accent-hover);
}

.gen-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--surface);
}

/* ── Character type chips ────────────────────────────────────────────────── */

.gen-chip-rows {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.gen-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px; /* prevent clipping on scroll */
}

.gen-chips::-webkit-scrollbar { display: none; }

.gen-chips--modes {
  flex-wrap: nowrap;
}

.chip {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.375rem 0.9375rem;
  transition: background var(--ease), border-color var(--ease), color var(--ease),
              opacity var(--ease);
  user-select: none;
}

.chip:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.chip--active {
  background: rgba(79, 126, 248, 0.15);
  border-color: var(--accent);
  color: var(--text);
}

.chip--dimmed {
  opacity: 0.35;
  pointer-events: none;
}

@keyframes chip-shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-4px); }
  75%       { transform: translateX(4px); }
}

.chip--shake {
  animation: chip-shake 0.3s ease;
}

/* ── Generate button ─────────────────────────────────────────────────────── */

#btn-generate {
  align-items: center;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  cursor: pointer;
  display: flex;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  gap: 0.5rem;
  justify-content: center;
  padding: 0.8125rem 1.25rem;
  transition: background var(--ease), transform var(--ease);
  width: 100%;
}

#btn-generate:hover {
  background: var(--accent-hover);
}

#btn-generate:active {
  transform: scale(0.98);
}

#btn-generate:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 3px;
}

#btn-generate svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.btn--spinning svg {
  animation: spin 0.5s ease;
}

/* ── Pattern map ─────────────────────────────────────────────────────────── */

.pattern-map {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.pmap-label {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.pmap-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

.pchar {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--border);
  transition: background var(--ease);
}

.pchar--keyboard   { background: var(--fb-warn); }
.pchar--sequential { background: rgba(251, 146, 60, 0.55); }
.pchar--repeated   { background: var(--fb-bad); }
.pchar--date       { background: var(--s3); }

.pmap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pmap-legend-item {
  display: flex;
  align-items: center;
  gap: 0.3125rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.pmap-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.pmap-legend--keyboard   .pmap-legend-dot { background: var(--fb-warn); }
.pmap-legend--sequential .pmap-legend-dot { background: rgba(251, 146, 60, 0.55); }
.pmap-legend--repeated   .pmap-legend-dot { background: var(--fb-bad); }
.pmap-legend--date       .pmap-legend-dot { background: var(--s3); }

/* ── Crack times ─────────────────────────────────────────────────────────── */

.crack-times {
  display: flex;
  flex-direction: column;
  gap: 0.3125rem;
  padding: 0.875rem 1rem;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-top: 0.625rem;
}

.crack-header {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

.crack-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
}

.crack-row + .crack-row {
  border-top: 1px solid var(--border);
}

.crack-info {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  min-width: 0;
}

.crack-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.2;
}

.crack-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.3;
}

.crack-value {
  font-weight: 700;
  font-family: var(--mono);
  font-size: 0.875rem;
  white-space: nowrap;
  text-align: right;
  flex-shrink: 0;
}

.crack-value--danger { color: var(--fb-bad); }
.crack-value--warn   { color: var(--fb-warn); }
.crack-value--fair   { color: var(--s3); }
.crack-value--safe   { color: var(--fb-ok); }

/* ── HIBP opt-in ─────────────────────────────────────────────────────────── */

.hibp-opt-in {
  width: 100%;
  max-width: 520px;
  margin: 0.75rem auto 0;
  padding: 0 0.125rem;
}

.hibp-toggle-wrap {
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  cursor: pointer;
}

.hibp-checkbox {
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
  margin-top: 2px;
  width: 17px;
  height: 17px;
  background: var(--surface-raised);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  transition: border-color var(--ease), background var(--ease);
}

.hibp-checkbox:hover {
  border-color: var(--text-dim);
}

.hibp-checkbox:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.hibp-checkbox:checked::after {
  content: '';
  display: block;
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.hibp-checkbox:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hibp-toggle-content {
  display: flex;
  flex-direction: column;
  gap: 0.1875rem;
}

.hibp-toggle-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  user-select: none;
  line-height: 1.3;
}

.hibp-toggle-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.45;
}

.hibp-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  margin-top: 1rem;
}

.hibp-status svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.hibp--checking {
  background: rgba(79, 126, 248, 0.08);
  border-color: rgba(79, 126, 248, 0.2);
  color: var(--text-muted);
}

.hibp--clean {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
  color: var(--fb-ok);
}

.hibp--breach {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--fb-bad);
}

.hibp-text { color: inherit; }

@keyframes hibp-spin {
  to { transform: rotate(360deg); }
}

.hibp-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(79, 126, 248, 0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: hibp-spin 0.75s linear infinite;
  flex-shrink: 0;
}

/* ── Explainer section ───────────────────────────────────────────────────── */

.explainer {
  margin-top: 2rem;
}

.explainer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.explainer-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-muted);
}

.mode-toggle-wrap {
  display: flex;
  gap: 2px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 3px;
  flex-shrink: 0;
}

.mode-btn {
  background: none;
  border: none;
  border-radius: calc(var(--radius-md) - 3px);
  color: var(--text-dim);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  transition: background var(--ease), color var(--ease), box-shadow var(--ease);
  white-space: nowrap;
}

.mode-btn--active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

.mode-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.explainer-blocks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.explainer-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.explainer-block h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.625rem;
}

.explainer-block h3 svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--accent);
}

.for-plain,
.for-tech {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.for-tech code {
  font-family: var(--mono);
  font-size: 0.8125rem;
  background: var(--surface-raised);
  padding: 0.125rem 0.3125rem;
  border-radius: var(--radius-sm);
  color: var(--accent);
}

#explainer[data-mode="plain"] .for-tech { display: none; }
#explainer[data-mode="tech"]  .for-plain { display: none; }

/* ── Ad placements ───────────────────────────────────────────────────────── */

.advert {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  min-height: 90px; /* reserve space while ad loads */
}

.advert--top {
  margin-bottom: 1rem;
}

.advert--btm {
  margin-top: 1rem;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */

.app-footer {
  text-align: center;
  margin-top: 1.75rem;
  color: var(--text-dim);
  font-size: 0.8125rem;
  line-height: 1.8;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 560px) {
  body {
    padding: 1.5rem 0.75rem 4rem;
  }

  .card {
    padding: 1.5rem;
    gap: 1.25rem;
  }

  .app-logo {
    width: 28px;
    height: 28px;
  }

  .app-header h1 {
    font-size: 1.625rem;
  }

  .strength-label {
    min-width: 5.5rem;
    font-size: 0.75rem;
  }
}