/* ──────────────────────────────────────────────────────────────
   RunDiary · Auth V3 — Night Run / Day Run
   Full design system for auth screens.
   Theme: [data-theme="night"] (default) / [data-theme="day"]
   ────────────────────────────────────────────────────────────── */

/* ── Design Tokens ── */
:root {
  --rd-bg:               #050505;
  --rd-surface:          rgba(12,12,12,0.72);
  --rd-surface-border:   rgba(242,239,231,0.10);
  --rd-surface-bw:       1px;
  --rd-surface-shadow:   0 1px 0 rgba(255,255,255,0.04) inset,
                         0 40px 80px rgba(0,0,0,0.6),
                         0 0 0 1px rgba(221,250,58,0.04);
  --rd-ink:              #F2EFE7;
  --rd-ink-mute:         rgba(242,239,231,0.55);
  --rd-ink-faint:        rgba(242,239,231,0.30);
  --rd-field-bg:         rgba(255,255,255,0.03);
  --rd-field-bg-focus:   rgba(221,250,58,0.04);
  --rd-field-border:     rgba(242,239,231,0.10);
  --rd-field-bw:         1px;
  --rd-accent:           #DDFA3A;
  --rd-accent-ink:       #050505;
  --rd-cta-bg:           #DDFA3A;
  --rd-cta-text:         #050505;
  --rd-cta-arr-bg:       #050505;
  --rd-cta-arr-fg:       #DDFA3A;
  --rd-cta-shadow:       0 16px 40px rgba(221,250,58,0.18);
  --rd-seg-bg:           rgba(255,255,255,0.04);
  --rd-seg-border:       rgba(242,239,231,0.10);
  --rd-seg-bw:           1px;
  --rd-seg-active-bg:    #DDFA3A;
  --rd-seg-active-text:  #050505;
  --rd-seg-text:         rgba(242,239,231,0.55);
  --rd-scan-line:        rgba(221,250,58,0.18);
  --rd-scan-dot:         #DDFA3A;
  --rd-scan-dot-shadow:  0 0 14px #DDFA3A;
  --rd-num-stroke:       rgba(221,250,58,0.10);
  --rd-tape-border:      rgba(242,239,231,0.08);
  --rd-tape-bg:          linear-gradient(to top, rgba(0,0,0,0.6), transparent);
  --rd-tape-text:        rgba(242,239,231,0.50);
  --rd-tape-val:         rgba(242,239,231,0.85);
  --rd-link:             #DDFA3A;
  --rd-link-border:      rgba(221,250,58,0.35);
  --rd-foot-border:      rgba(242,239,231,0.14);
  --rd-back-border:      rgba(242,239,231,0.25);
  --rd-chip-border:      rgba(242,239,231,0.10);
  --rd-chip-text:        rgba(242,239,231,0.65);
  --rd-eyebrow-num-bg:   #DDFA3A;
  --rd-eyebrow-num-text: #050505;
  --rd-error:            #E03A0F;
  --rd-crosshair:        #DDFA3A;
  --rd-transition:       200ms ease;
}

[data-theme="day"] {
  --rd-bg:               #E8FA3D;
  --rd-surface:          #FFFFFF;
  --rd-surface-border:   #0A0A0A;
  --rd-surface-bw:       1.5px;
  --rd-surface-shadow:   0 1px 0 rgba(255,255,255,0.4) inset,
                         14px 14px 0 0 #0A0A0A,
                         0 30px 70px rgba(10,8,2,0.18);
  --rd-ink:              #0A0A0A;
  --rd-ink-mute:         rgba(10,10,10,0.65);
  --rd-ink-faint:        rgba(10,10,10,0.30);
  --rd-field-bg:         #FAFAF7;
  --rd-field-bg-focus:   #FFFFFF;
  --rd-field-border:     #E5E0D5;
  --rd-field-bw:         1.5px;
  --rd-accent:           #FF4A1C;
  --rd-accent-ink:       #FFFFFF;
  --rd-cta-bg:           #FF4A1C;
  --rd-cta-text:         #FFFFFF;
  --rd-cta-arr-bg:       #0A0A0A;
  --rd-cta-arr-fg:       #E8FA3D;
  --rd-cta-shadow:       6px 6px 0 0 #0A0A0A, 0 18px 40px rgba(255,74,28,0.30);
  --rd-seg-bg:           #FAFAF7;
  --rd-seg-border:       #E5E0D5;
  --rd-seg-bw:           1.5px;
  --rd-seg-active-bg:    #FF4A1C;
  --rd-seg-active-text:  #FFFFFF;
  --rd-seg-text:         rgba(10,10,10,0.55);
  --rd-scan-line:        rgba(10,10,10,0.22);
  --rd-scan-dot:         #FF4A1C;
  --rd-scan-dot-shadow:  0 0 14px rgba(255,74,28,0.55), 0 0 4px #FF4A1C;
  --rd-num-stroke:       rgba(10,10,10,0.16);
  --rd-tape-border:      #0A0A0A;
  --rd-tape-bg:          transparent;
  --rd-tape-text:        rgba(10,10,10,0.65);
  --rd-tape-val:         #0A0A0A;
  --rd-link:             #0A0A0A;
  --rd-link-border:      #0A0A0A;
  --rd-foot-border:      rgba(10,10,10,0.16);
  --rd-back-border:      rgba(10,10,10,0.25);
  --rd-chip-border:      #E5E0D5;
  --rd-chip-text:        rgba(10,10,10,0.75);
  --rd-eyebrow-num-bg:   #0A0A0A;
  --rd-eyebrow-num-text: #F4F0E6;
  --rd-crosshair:        #FF4A1C;
}

/* ── Page shell ── */
.rd-auth-page {
  min-height: 100vh;
  background: var(--rd-bg);
  color: var(--rd-ink);
  font-family: "Manrope", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background var(--rd-transition), color var(--rd-transition);
}

/* ── Giant background numeral ── */
.rd-bg-num {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  user-select: none;
  font-family: "Unbounded", sans-serif;
  font-weight: 900;
  font-size: 40vw;
  line-height: 1;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--rd-num-stroke);
  white-space: nowrap;
  z-index: 0;
  transition: -webkit-text-stroke-color var(--rd-transition);
}
@media (min-width: 1024px) {
  .rd-bg-num {
    font-size: 540px;
    transform: translateX(-2%);
  }
}
@media (max-width: 767px) {
  .rd-bg-num {
    font-size: 280px;
    transform: translate(-15%, 10%);
    align-items: flex-end;
  }
}

/* ── Scan line ── */
.rd-scan {
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 1px;
  background: var(--rd-scan-line);
  z-index: 1;
  pointer-events: none;
  transition: background var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-scan { top: 38%; }
}
.rd-scan::before,
.rd-scan::after {
  content: "";
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--rd-scan-dot);
  box-shadow: var(--rd-scan-dot-shadow);
  top: -2.5px;
  animation: rd-pulse 1.6s ease-in-out infinite;
  transition: background var(--rd-transition), box-shadow var(--rd-transition);
}
.rd-scan::before { left: 40px; }
.rd-scan::after  { right: 40px; }

@keyframes rd-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.6); }
}

/* ── Top HUD bar ── */
.rd-top {
  position: relative;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 36px 56px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--rd-ink-mute);
  transition: color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-top {
    padding: 18px 22px;
    font-size: 9px;
    letter-spacing: 0.18em;
  }
}

.rd-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "Unbounded", sans-serif;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--rd-ink);
  text-decoration: none;
  transition: color var(--rd-transition);
}
.rd-brand-mark {
  color: var(--rd-accent);
  display: inline-flex;
  transition: color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-brand { font-size: 15px; }
}

.rd-hud-stats {
  display: flex;
  gap: 28px;
  align-items: center;
}
@media (max-width: 767px) {
  .rd-hud-stats { gap: 14px; }
  .rd-hud-stat:not(.rd-hud-keep) { display: none; }
}
.rd-hud-stat .v {
  color: var(--rd-ink);
  font-weight: 700;
  margin-right: 6px;
  transition: color var(--rd-transition);
}

.rd-hud-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--rd-accent);
  transition: color var(--rd-transition);
}
.rd-hud-live .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--rd-accent);
  box-shadow: 0 0 10px var(--rd-accent);
  animation: rd-pulse 1.6s ease-in-out infinite;
  transition: background var(--rd-transition), box-shadow var(--rd-transition);
}

/* ── Stage ── */
.rd-stage {
  position: relative;
  z-index: 3;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 56px 80px;
}
@media (max-width: 767px) {
  .rd-stage { padding: 8px 16px 80px; }
}

/* ── Card ── */
.rd-card {
  width: 100%;
  max-width: 540px;
  background: var(--rd-surface);
  backdrop-filter: blur(14px);
  border: var(--rd-surface-bw) solid var(--rd-surface-border);
  border-radius: 22px;
  padding: 26px 36px 24px;
  position: relative;
  box-shadow: var(--rd-surface-shadow);
  transition:
    background var(--rd-transition),
    border-color var(--rd-transition),
    box-shadow var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-card {
    padding: 26px 22px 22px;
    border-radius: 18px;
    max-width: none;
  }
}

/* corner crosshairs */
.rd-card::before,
.rd-card::after {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  border-color: var(--rd-crosshair);
  border-style: solid;
  pointer-events: none;
  transition: border-color var(--rd-transition);
}
.rd-card::before {
  top: -1px; left: -1px;
  border-width: 1.5px 0 0 1.5px;
  border-top-left-radius: 22px;
}
.rd-card::after {
  top: -1px; right: -1px;
  border-width: 1.5px 1.5px 0 0;
  border-top-right-radius: 22px;
}

/* ── Eyebrow ── */
.rd-eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--rd-accent);
  margin-bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: color var(--rd-transition);
}
.rd-eyebrow-num {
  background: var(--rd-eyebrow-num-bg);
  color: var(--rd-eyebrow-num-text);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: background var(--rd-transition), color var(--rd-transition);
}

/* ── Title ── */
.rd-title {
  font-family: "Unbounded", sans-serif;
  font-weight: 800;
  font-size: 44px;
  line-height: 0.94;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  color: var(--rd-ink);
  margin: 0;
  transition: color var(--rd-transition);
}
.rd-title .neon {
  color: var(--rd-accent);
  transition: color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-title { font-size: 34px; }
}

/* ── Lede ── */
.rd-lede {
  margin-top: 10px;
  color: var(--rd-ink-mute);
  font-size: 14.5px;
  line-height: 1.5;
  max-width: 460px;
  transition: color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-lede { font-size: 13px; margin-top: 8px; }
}

/* ── Divider ── */
.rd-divider {
  margin: 18px 0 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: rgba(242,239,231,0.4);
  text-transform: uppercase;
  border: none;
  background: none;
}
[data-theme="day"] .rd-divider { color: rgba(10,10,10,0.4); }
.rd-divider::before,
.rd-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rd-field-border);
  transition: background var(--rd-transition);
}

/* ── Segmented control ── */
.rd-seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--rd-seg-bg);
  border: var(--rd-seg-bw) solid var(--rd-seg-border);
  border-radius: 12px;
  padding: 3px;
  margin-bottom: 12px;
  transition: background var(--rd-transition), border-color var(--rd-transition);
}
.rd-seg button {
  appearance: none;
  border: none;
  background: transparent;
  padding: 10px 12px;
  border-radius: 9px;
  font: 600 13px "Manrope", sans-serif;
  color: var(--rd-seg-text);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: background var(--rd-transition), color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-seg button { padding: 9px 8px; font-size: 12px; }
}
.rd-seg button.on {
  background: var(--rd-seg-active-bg);
  color: var(--rd-seg-active-text);
}

/* ── Fields ── */
.rd-fields {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rd-field {
  position: relative;
  background: var(--rd-field-bg);
  border: var(--rd-field-bw) solid var(--rd-field-border);
  border-radius: 12px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
@media (max-width: 767px) {
  .rd-field { border-radius: 11px; }
}
.rd-field:focus-within {
  border-color: var(--rd-accent);
  background: var(--rd-field-bg-focus);
  box-shadow: 0 0 0 3px rgba(var(--rd-accent-rgb, 221 250 58), 0.10);
}
[data-theme="night"] .rd-field:focus-within {
  box-shadow: 0 0 0 3px rgba(221,250,58,0.10);
}
[data-theme="day"] .rd-field:focus-within {
  box-shadow: 0 0 0 3px rgba(255,74,28,0.18);
}
.rd-field.rd-field-err {
  border-color: var(--rd-error) !important;
  box-shadow: none !important;
}
.rd-field-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-ink-mute);
  transition: color var(--rd-transition);
}
.rd-field input {
  border: none;
  background: transparent;
  outline: none;
  font: 500 15px "Manrope", sans-serif;
  color: var(--rd-ink);
  padding: 0;
  width: 100%;
  transition: color var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-field input { font-size: 14px; }
}
.rd-field input::placeholder { color: var(--rd-ink-faint); }
.rd-field-trail {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--rd-ink-mute);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: inline-flex;
  align-items: center;
  transition: color var(--rd-transition);
}
.rd-field-trail:hover { color: var(--rd-ink); }
.rd-field-err-msg {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--rd-error);
  margin-top: 4px;
}

/* ── Validation chips ── */
.rd-chips {
  margin-top: 8px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.05em;
}
.rd-chip {
  padding: 4px 9px;
  border: 1px solid var(--rd-chip-border);
  border-radius: 999px;
  color: var(--rd-chip-text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--rd-transition), background var(--rd-transition), color var(--rd-transition);
}
[data-theme="day"] .rd-chip { background: #FAFAF7; }
.rd-chip::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--rd-accent);
  flex-shrink: 0;
  transition: background var(--rd-transition);
}
.rd-chip.ok {
  border-color: var(--rd-accent);
  color: var(--rd-ink);
}

/* ── Forgot password row ── */
.rd-row {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--rd-ink-mute);
  transition: color var(--rd-transition);
}
@media (max-width: 767px) { .rd-row { font-size: 12px; } }

.rd-link {
  color: var(--rd-link);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid var(--rd-link-border);
  padding-bottom: 1px;
  transition: color var(--rd-transition), border-color var(--rd-transition);
}
.rd-link:hover { opacity: 0.8; }

/* ── CTA button ── */
.rd-cta {
  margin-top: 14px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  background: var(--rd-cta-bg);
  color: var(--rd-cta-text);
  border: none;
  padding: 14px 20px;
  border-radius: 14px;
  font: 700 15px "Manrope", sans-serif;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: var(--rd-cta-shadow);
  text-decoration: none;
  transition:
    background var(--rd-transition),
    color var(--rd-transition),
    box-shadow var(--rd-transition);
}
@media (max-width: 767px) {
  .rd-cta { padding: 14px 18px; font-size: 14px; margin-top: 12px; }
}
.rd-cta:hover { opacity: 0.92; }
.rd-cta:disabled,
.rd-cta[aria-disabled="true"] {
  opacity: 0.45;
  box-shadow: none;
  cursor: not-allowed;
}
.rd-cta-arr {
  width: 26px; height: 26px;
  background: var(--rd-cta-arr-bg);
  color: var(--rd-cta-arr-fg);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--rd-transition), color var(--rd-transition);
}

/* ── Footer ── */
.rd-foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--rd-foot-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--rd-ink-mute);
  transition: color var(--rd-transition), border-color var(--rd-transition);
}
@media (max-width: 767px) { .rd-foot { font-size: 12px; margin-top: 12px; } }

/* ── Back link ── */
.rd-back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 600 13px "Manrope", sans-serif;
  color: var(--rd-ink-mute);
  text-decoration: none;
  margin-bottom: 12px;
  letter-spacing: 0.01em;
  transition: color var(--rd-transition);
}
.rd-back:hover { color: var(--rd-ink); }
.rd-back-circle {
  width: 24px; height: 24px;
  border: 1px solid var(--rd-back-border);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--rd-transition);
}

/* ── Bottom tape strip ── */
.rd-tape {
  position: sticky;
  bottom: 0;
  left: 0; right: 0;
  z-index: 4;
  padding: 14px 56px;
  border-top: 1.5px solid var(--rd-tape-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rd-tape-text);
  background: var(--rd-tape-bg);
  transition: color var(--rd-transition), border-color var(--rd-transition), background var(--rd-transition);
  overflow: hidden;
}
@media (max-width: 767px) {
  .rd-tape { padding: 10px 20px; font-size: 9px; letter-spacing: 0.14em; }
  .rd-tape-seg:not(.rd-tape-keep) { display: none; }
}
.rd-tape-val {
  color: var(--rd-tape-val);
  font-weight: 700;
  transition: color var(--rd-transition);
}

/* ── Flash alerts ── */
.rd-alerts {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: min(480px, calc(100vw - 32px));
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rd-alert {
  background: rgba(224, 58, 15, 0.18);
  border: 1px solid rgba(224, 58, 15, 0.45);
  color: #E03A0F;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
[data-theme="day"] .rd-alert {
  background: rgba(224, 58, 15, 0.10);
}
.rd-alert-close {
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  font-size: 16px;
  padding: 0;
  line-height: 1;
  opacity: 0.6;
  flex-shrink: 0;
}
.rd-alert-close:hover { opacity: 1; }

/* ── Auth body reset ── */
.rd-auth-body {
  margin: 0;
  padding: 0;
}