:root {
  --bg: #030712;
  --surface: #111827;
  --card: rgba(17, 24, 39, 0.85);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(34, 211, 238, 0.4);
  --text: #f9fafb;
  --muted: #9ca3af;
  --success: #10b981;
  --warning: #f59e0b;
  --gradient: linear-gradient(135deg, #22d3ee, #a855f7);
  --radius-xl: 16px;
  --radius-full: 999px;
  --shadow-glow: 0 0 30px rgba(34, 211, 238, 0.3);
  --shadow-card: 0 15px 40px rgba(0, 0, 0, 0.35);
  --transition-base: 0.3s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

main {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: max(1.5rem, env(safe-area-inset-top)) clamp(1.25rem, 4vw, 2.5rem) 4rem;
  flex: 1;
}

.section {
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.section.active {
  opacity: 1;
  transform: none;
}

.hidden {
  display: none;
}

h1,
h2,
h3,
h4 {
  margin: 0;
}

p {
  margin-top: 0;
}

.title-gradient {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.badge {
  display: inline-flex;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.btn {
  border: none;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  font-weight: 600;
  font-size: 1rem;
  min-height: 52px;
  border-radius: var(--radius-full);
}

.btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 4px;
}

.btn-primary {
  background: var(--gradient);
  color: #0f172a;
  padding: 0.85rem 2.5rem;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  padding: 0.85rem 2rem;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
}

.badge,
.btn,
.pill,
.card,
.tab,
.day-card,
.chat-fab {
  backdrop-filter: blur(20px);
}

.section-header {
  margin-bottom: 1.25rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  animation: card-entrance 0.6s ease both;
}

.card:hover {
  transform: translateY(-4px);
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.85rem;
  border: 1px solid transparent;
}

.pill-muted {
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.pill.active {
  border-color: rgba(34, 211, 238, 0.7);
  background: rgba(34, 211, 238, 0.12);
  color: var(--text);
}

.input {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 1rem;
}

.input:focus {
  outline: none;
  border-color: transparent;
  box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.5);
}

.input-stepper {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  padding: 0.25rem 0.5rem;
  gap: 1rem;
  min-height: 52px;
}

.input-stepper button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
}

.input-stepper span {
  font-weight: 600;
}

.selection-icon {
  font-size: 2.25rem;
  display: inline-flex;
}

.wizard-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.fade-in {
  animation: fadeIn 0.8s ease both;
}

#wizard-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.wizard-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

#landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
  text-align: left;
  position: relative;
}

.orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  filter: blur(120px);
  background: var(--gradient);
  animation: float 20s infinite alternate;
  opacity: 0.6;
}

.orb-left {
  top: 10%;
  left: -5%;
}

.orb-center {
  top: 40%;
  right: 5%;
}

.orb-right {
  bottom: 5%;
  left: 40%;
}

@keyframes float {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(40px, -30px, 0);
  }
}

.scroll-indicator {
  display: inline-flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.scroll-line {
  width: 2px;
  height: 42px;
  background: rgba(255, 255, 255, 0.15);
  overflow: hidden;
  position: relative;
}

.scroll-line::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 14px;
  background: var(--gradient);
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(200%);
  }
}

.progress-dots {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.progress-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.progress-dots .dot.active {
  background: var(--gradient);
}

.progress-line {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-50%);
}

.progress-line::after {
  content: "";
  position: absolute;
  height: 100%;
  width: 32%;
  background: var(--gradient);
}

#wizard-steps {
  min-height: 220px;
  text-align: left;
}

.wizard-nav {
  position: sticky;
  bottom: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.25rem;
  background: rgba(3, 7, 18, 0.8);
  padding: 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  z-index: 10;
}

.loading-overlay.hidden {
  display: none !important;
}

.loading-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(360px, 90vw);
}

.spinner {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: #22d3ee;
  border-right-color: #a855f7;
  animation: spin 1.4s linear infinite;
  margin: 0 auto;
}

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

.loading-text p {
  margin: 0.15rem 0;
  color: var(--muted);
}

.loading-progress {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
}

.loading-progress-bar {
  height: 100%;
  background: var(--gradient);
  border-radius: inherit;
  transition: width 0.4s ease;
}

.week-tabs {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.week-tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  min-height: 48px;
}

.tab.active {
  color: var(--text);
  border-color: transparent;
  background: var(--gradient);
}

.days-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.day-card {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.day-card .status {
  font-size: 0.85rem;
  color: var(--warning);
}

.day-card .completed {
  color: var(--success);
}

.day-card .upcoming {
  color: var(--muted);
}

.chat-fab {
  position: fixed;
  bottom: max(1.5rem, env(safe-area-inset-bottom));
  right: max(1.5rem, env(safe-area-inset-right));
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient);
  border: none;
  box-shadow: var(--shadow-glow);
  color: #0f172a;
  font-size: 1.5rem;
  cursor: pointer;
}

.chat-fab:hover {
  transform: translateY(-4px);
}

.link-back {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 0.75rem;
}

.tip-card header,
.exercise-item,
.execution-card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.collapse-toggle {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
}

.exercise-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.25rem;
}

.exercise-item {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: rgba(17, 24, 39, 0.6);
}

.sticky-action {
  position: sticky;
  bottom: 1rem;
  width: 100%;
  margin-top: 2rem;
}

.execution-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.execution-card h3 {
  font-size: 1.2rem;
}

.technique summary {
  cursor: pointer;
  color: var(--muted);
}

.rest-timer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.04);
}

.rating {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.rating .pill {
  min-height: 48px;
}

#completion {
  text-align: center;
}

.success-icon {
  position: relative;
  width: 96px;
  height: 96px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pop 0.6s ease;
}

.checkmark {
  font-size: 2.5rem;
  color: var(--success);
}

.confetti {
  position: absolute;
  width: 8px;
  height: 16px;
  background: var(--gradient);
  border-radius: 2px;
  animation: confetti 1.2s ease-in-out infinite;
}

.confetti-1 {
  top: -10px;
  left: 15px;
}

.confetti-2 {
  top: -15px;
  right: 20px;
  animation-delay: 0.2s;
}

.confetti-3 {
  bottom: -12px;
  left: 35px;
  animation-delay: 0.4s;
}

@keyframes confetti {
  0% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translateY(20px) scale(0.8);
    opacity: 0;
  }
}

.stats-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  text-align: center;
}

.footer {
  margin-top: 3rem;
  padding: 2rem clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  color: var(--muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 0.75rem;
}

.footer a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

.chat-modal {
  border: none;
  padding: 1.5rem;
  border-radius: 24px 24px 0 0;
  width: min(480px, 100%);
  background: var(--surface);
  color: var(--text);
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.4);
}

.chat-modal::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.chat-modal header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.close-modal {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.chat-body {
  margin: 1rem 0;
  max-height: 40vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.message {
  padding: 0.6rem 0.9rem;
  border-radius: 12px;
  font-size: 0.95rem;
}

.message.trainer {
  background: rgba(255, 255, 255, 0.08);
  align-self: flex-start;
}

.message.user {
  background: rgba(34, 211, 238, 0.2);
  align-self: flex-end;
}

.chat-input {
  display: flex;
  gap: 0.5rem;
}

.chat-input .input {
  flex: 1;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-entrance {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes shake {
  10%,
  90% {
    transform: translateX(-2px);
  }
  20%,
  80% {
    transform: translateX(4px);
  }
  30%,
  50%,
  70% {
    transform: translateX(-6px);
  }
  40%,
  60% {
    transform: translateX(6px);
  }
}

@keyframes pop {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@media (min-width: 768px) {
  #landing {
    align-items: flex-start;
  }

  .wizard-nav {
    position: static;
  }

  .chat-fab {
    bottom: 2.5rem;
    right: calc((100vw - 960px) / 2 + 1.5rem);
  }
}