/* ─── Reset & Base ───────────────────────────────────────────────────────── */

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

:root {
  --ff: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, 'Helvetica Neue', sans-serif;
  --r: 14px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --slide-dur: 0.35s;
}

html, body {
  width: 100%; height: 100%;
  font-family: var(--ff);
  background: #050505;
  color: #fff;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── App shell ──────────────────────────────────────────────────────────── */

#app {
  width: 100%;
  height: 100%;
  max-width: 430px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
  /* subtle side shadow on wide screens */
  box-shadow: 0 0 80px rgba(0,0,0,0.8);
}

/* ─── Screens ────────────────────────────────────────────────────────────── */

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease;
}

.screen.hidden  { opacity: 0; pointer-events: none; }
.screen.active  { opacity: 1; }

/* ─── Login ──────────────────────────────────────────────────────────────── */

#login-screen {
  background: radial-gradient(ellipse at 60% 0%, #1e1040 0%, #0a0a0a 60%);
  align-items: flex-start;
  overflow-y: auto;
}

.login-wrap {
  width: 100%;
  padding: 3.5rem 1.75rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.login-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.login-logo {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
}
.logo-text   { color: #fff; }
.logo-accent { color: #a855f7; }

.login-tagline {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

.login-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.field-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.field-group.hidden { display: none; }

.input-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  padding-left: 0.1rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: var(--r);
  color: #fff;
  font-size: 0.97rem;
  font-family: var(--ff);
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  -webkit-appearance: none;
}
input[type="text"]::placeholder,
input[type="password"]::placeholder { color: rgba(255,255,255,0.22); }
input[type="text"]:focus,
input[type="password"]:focus {
  border-color: rgba(168,85,247,0.6);
  background: rgba(168,85,247,0.07);
}

.portal-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0.25rem 0;
}
.portal-divider::before,
.portal-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.08);
}
.portal-divider span {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
  white-space: nowrap;
}

.captcha-hint {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.38);
  line-height: 1.5;
  margin-bottom: 0.25rem;
}

.btn-primary {
  width: 100%;
  padding: 0.95rem 1.25rem;
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  border: none;
  border-radius: var(--r);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--ff);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: opacity 0.2s, transform 0.12s;
  margin-top: 0.25rem;
}
.btn-primary:hover  { opacity: 0.88; }
.btn-primary:active { transform: scale(0.975); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-arrow { font-size: 1.15rem; }

.captcha-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.captcha-img {
  flex: 1;
  height: 56px;
  border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  object-fit: contain;
  display: block;
}

.btn-icon {
  flex-shrink: 0;
  width: 52px;
  height: 56px;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 1.35rem;
  cursor: pointer;
  transition: background 0.15s;
  font-family: var(--ff);
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-icon:hover { background: rgba(255,255,255,0.1); }

.error-msg {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--r);
  color: #fca5a5;
  font-size: 0.875rem;
  line-height: 1.5;
}
.error-msg.hidden { display: none; }

.privacy-note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.28);
  text-align: center;
  line-height: 1.5;
  padding: 0 0.5rem;
}

/* ─── Loading ────────────────────────────────────────────────────────────── */

#loading-screen { background: #0a0a0a; }

.loader-wrap {
  width: 78%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}

.loader-track {
  width: 100%;
  height: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}

.loader-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #a855f7, #ec4899);
  border-radius: 99px;
  transition: width 0.6s var(--ease);
}

.loader-msg {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.4);
  text-align: center;
  font-style: italic;
  letter-spacing: 0.01em;
}

/* ─── Stories screen ─────────────────────────────────────────────────────── */

#stories-screen {
  flex-direction: column;
  align-items: stretch;
  padding: 0;
}

/* Progress bar row */
.prog-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  gap: 3px;
  padding: 14px 12px 0;
}

.prog-seg {
  flex: 1;
  height: 2.5px;
  background: rgba(255,255,255,0.2);
  border-radius: 99px;
  overflow: hidden;
}

.prog-seg .fill {
  height: 100%;
  background: rgba(255,255,255,0.9);
  border-radius: 99px;
  width: 0%;
  transition: width 0.15s ease;
}

.prog-seg.done .fill  { width: 100%; }
.prog-seg.active .fill { width: 100%; background: #fff; }

/* Slides wrapper */
.slides-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

/* Individual slide */
.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 1.5rem 2rem;
  transform: translateX(100%);
  transition: transform var(--slide-dur) var(--ease);
  overflow-y: auto;
  overflow-x: hidden;
}

.slide.active { transform: translateX(0%); }

/* Navigation tap zones */
.nav-zone {
  position: absolute;
  top: 0; bottom: 0;
  width: 38%;
  cursor: pointer;
  z-index: 50;
  -webkit-tap-highlight-color: transparent;
}
.nav-prev { left: 0; }
.nav-next { right: 0; }

/* ─── Slide inner ─────────────────────────────────────────────────────────── */

.slide-inner {
  width: 100%;
  max-width: 370px;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

/* Stagger-in animation */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-in > * {
  animation: fadeUp 0.5s var(--ease) both;
  opacity: 0;
}
.animate-in > *:nth-child(1)  { animation-delay: 0.07s; }
.animate-in > *:nth-child(2)  { animation-delay: 0.18s; }
.animate-in > *:nth-child(3)  { animation-delay: 0.29s; }
.animate-in > *:nth-child(4)  { animation-delay: 0.40s; }
.animate-in > *:nth-child(5)  { animation-delay: 0.51s; }
.animate-in > *:nth-child(6)  { animation-delay: 0.62s; }
.animate-in > *:nth-child(7)  { animation-delay: 0.73s; }
.animate-in > *:nth-child(8)  { animation-delay: 0.84s; }
.animate-in > *:nth-child(9)  { animation-delay: 0.95s; }

/* ─── Typography tokens ──────────────────────────────────────────────────── */

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.42);
}

.big-quote {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.huge-number {
  font-size: 5.5rem;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.05em;
}
.huge-number .unit {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  vertical-align: middle;
  opacity: 0.75;
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.38);
  margin-top: -0.6rem;
}

.archetype-title {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.subject-name {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.subject-code {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  font-weight: 600;
  margin-top: -0.6rem;
}

.slide-subtitle {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  font-style: italic;
  margin-top: -0.4rem;
}

.body-text {
  font-size: 1.0rem;
  line-height: 1.68;
  color: rgba(255,255,255,0.72);
}
.body-text strong { color: #fff; font-weight: 700; }
.body-text.italic { font-style: italic; }

.name-display {
  font-size: 1.55rem;
  font-weight: 800;
  color: #c084fc;
  letter-spacing: -0.015em;
}

.meta-line {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-top: -0.5rem;
}
.meta-line.dim { color: rgba(255,255,255,0.28); }

.badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.28rem 0.75rem;
  border-radius: 99px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.badge.purple {
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  color: #c084fc;
}

.divider {
  width: 36px;
  height: 2px;
  background: rgba(255,255,255,0.14);
  border-radius: 99px;
}

/* Alert tag */
.alert-tag {
  padding: 0.55rem 0.85rem;
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: 10px;
  font-size: 0.78rem;
  color: #fca5a5;
  line-height: 1.4;
  font-style: italic;
}

/* ─── Bar chart (slide 4) ────────────────────────────────────────────────── */

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.bar-row { display: flex; flex-direction: column; gap: 0.22rem; }

.bar-labels {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.bar-name {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}

.bar-val {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.bar-track {
  height: 7px;
  background: rgba(255,255,255,0.07);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.9s var(--ease);
}

/* ─── GPA chart (slide 6) ────────────────────────────────────────────────── */

.gpa-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 100px;
  width: 100%;
  padding-bottom: 2px;
}

.gpa-bar-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
  justify-content: flex-end;
}

.gpa-bar {
  width: 100%;
  border-radius: 5px 5px 0 0;
  min-height: 4px;
  transition: height 0.9s var(--ease);
}

.gpa-val {
  font-size: 0.65rem;
  font-weight: 700;
  color: rgba(255,255,255,0.65);
}

.gpa-label {
  font-size: 0.6rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── Almost moments (slide 7) ──────────────────────────────────────────── */

.almost-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  width: 100%;
}

.almost-item {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0.9rem 1rem;
  background: rgba(168,85,247,0.07);
  border: 1px solid rgba(168,85,247,0.18);
  border-radius: var(--r);
}

.almost-gap {
  font-size: 2.4rem;
  font-weight: 900;
  color: #a855f7;
  line-height: 1;
  letter-spacing: -0.03em;
  min-width: 56px;
  text-align: center;
}

.almost-info { flex: 1; padding-left: 0.75rem; }

.almost-course {
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.3;
  color: rgba(255,255,255,0.88);
}

.almost-threshold {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.2rem;
  letter-spacing: 0.02em;
}

/* ─── Hall ticket card (slide 8) ────────────────────────────────────────── */

.hall-card {
  width: 100%;
  padding: 1.5rem 1.25rem;
  background: rgba(251,191,36,0.06);
  border: 1px solid rgba(251,191,36,0.18);
  border-radius: var(--r);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.hall-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(251,191,36,0.5);
}

.hall-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: #fbbf24;
  letter-spacing: 0.04em;
  line-height: 1;
}

.hall-subject {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fbbf24;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hall-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.2rem;
}

/* ─── Stats grid (slide 10) ─────────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  width: 100%;
}

.stat-box {
  padding: 1.1rem 0.9rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--r);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat-num {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.stat-desc {
  font-size: 0.67rem;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  line-height: 1.4;
}

/* ─── Closer (slide 11) ─────────────────────────────────────────────────── */

.closer-quote {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.65;
  color: rgba(255,255,255,0.88);
  font-style: italic;
}

.closer-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #c084fc;
}

.share-btn {
  width: 100%;
  padding: 0.9rem 1.25rem;
  background: linear-gradient(135deg, #a855f7, #ec4899);
  border: none;
  border-radius: var(--r);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--ff);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: opacity 0.2s, transform 0.12s;
}
.share-btn:hover  { opacity: 0.88; }
.share-btn:active { transform: scale(0.975); }

.restart-btn {
  width: 100%;
  padding: 0.8rem 1.25rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r);
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  font-family: var(--ff);
  cursor: pointer;
  transition: background 0.15s;
}
.restart-btn:hover { background: rgba(255,255,255,0.08); }

/* ─── SRM Logo ───────────────────────────────────────────────────────────── */

.srm-logo-watermark {
  width: 72px;
  height: 72px;
  object-fit: contain;
  opacity: 0.55;
  border-radius: 12px;
}

.srm-logo-closer {
  width: 56px;
  height: 56px;
  object-fit: contain;
  opacity: 0.5;
  border-radius: 10px;
}

/* ─── Attendance gauge (slide 1) ─────────────────────────────────────────── */

.att-gauge-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.att-gauge-track {
  width: 100%;
  height: 10px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: visible;
  position: relative;
}

.att-gauge-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 1.1s cubic-bezier(0.4,0,0.2,1);
}

.att-gauge-limit {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: rgba(255,255,255,0.55);
  border-radius: 2px;
  transform: translateX(-50%);
}

.att-gauge-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.6rem;
  color: rgba(255,255,255,0.28);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.att-limit-label {
  font-weight: 700;
  color: rgba(255,255,255,0.45);
}

/* ─── Score chip (slides 2, 3) ───────────────────────────────────────────── */

.score-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.2rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid;
  border-radius: var(--r);
  align-self: flex-start;
}

.score-mark {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.score-sep {
  font-size: 1.3rem;
  font-weight: 300;
  color: rgba(255,255,255,0.3);
  margin: 0 0.05rem;
}

.score-max {
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
}

.score-badge {
  display: inline-block;
  margin-left: 0.55rem;
  padding: 0.18rem 0.55rem;
  border-radius: 99px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  align-self: center;
}

/* ─── FA hints (slides 0, 9, 11) ─────────────────────────────────────────── */

.fa-hint {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.32);
  font-style: italic;
  letter-spacing: 0.02em;
}

.fa-line {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.38);
  font-style: italic;
  border-left: 2px solid rgba(255,255,255,0.12);
  padding-left: 0.75rem;
  line-height: 1.5;
}

/* ─── Bar chart limit line & legend (slide 4) ───────────────────────────── */

.bar-limit-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1.5px;
  background: rgba(255,255,255,0.4);
  transform: translateX(-50%);
  pointer-events: none;
}

.bar-legend {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.64rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: -0.25rem;
}

.bar-legend-line {
  width: 14px;
  height: 1.5px;
  background: rgba(255,255,255,0.4);
  flex-shrink: 0;
}

/* ─── Info tag (slides 1, 5) ─────────────────────────────────────────────── */

.info-tag {
  padding: 0.5rem 0.85rem;
  background: rgba(249,115,22,0.1);
  border: 1px solid rgba(249,115,22,0.22);
  border-radius: 10px;
  font-size: 0.76rem;
  color: #fdba74;
  line-height: 1.45;
  font-style: italic;
}

/* ─── Mute button ────────────────────────────────────────────────────────── */

.mute-btn {
  position: absolute;
  bottom: 20px;
  right: 16px;
  z-index: 150;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.13);
  color: rgba(255,255,255,0.55);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, opacity 0.15s;
  -webkit-tap-highlight-color: transparent;
  font-family: var(--ff);
}
.mute-btn:hover { background: rgba(255,255,255,0.14); color: rgba(255,255,255,0.85); }

/* ─── Responsive: desktop framing ───────────────────────────────────────── */

@media (min-width: 500px) {
  body { background: #000; }
  #app { border-left: 1px solid rgba(255,255,255,0.05); border-right: 1px solid rgba(255,255,255,0.05); }
}