/* ===== Design Tokens ===== */
:root {
  --font: 'Inter', system-ui, sans-serif;

  /* Warm, dignified palette */
  --clr-bg:       #f5f0eb;
  --clr-surface:  #ffffff;
  --clr-text:     #2c2420;
  --clr-muted:    #8a7e76;
  --clr-border:   #e0d6cc;

  --clr-primary:      #6b3a2a;
  --clr-primary-hover: #8a4e3a;
  --clr-primary-text:  #ffffff;

  --clr-accent:   #c9a84c;
  --clr-probe-bg: #f0ebe5;
  --clr-probe-text: #a09488;

  --clr-tag-probe: #d4c8b8;
  --clr-tag-service: #6b3a2a;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(44,36,32,.07);
  --shadow-hover: 0 4px 20px rgba(44,36,32,.12);
  --transition: .2s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #4a2518 0%, #6b3a2a 50%, #8a4e3a 100%);
  color: #fff;
  text-align: center;
  padding: 3rem 1.5rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 120%, rgba(201,168,76,.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; }

.hero-cross {
  display: block;
  font-size: 2.5rem;
  margin-bottom: .5rem;
  opacity: .7;
  animation: fadeDown .8s ease-out;
}

.hero h1 {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  animation: fadeDown .8s ease-out .1s both;
}

.hero-sub {
  margin-top: .5rem;
  font-size: 1rem;
  opacity: .8;
  font-weight: 400;
  animation: fadeDown .8s ease-out .2s both;
}

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

/* ===== Main ===== */
main {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

/* ===== Loader ===== */
.loader {
  text-align: center;
  padding: 3rem 0;
  color: var(--clr-muted);
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--clr-border);
  border-top-color: var(--clr-primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: spin .7s linear infinite;
}

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

/* ===== Day Group ===== */
.day-group {
  margin-bottom: 2rem;
  animation: fadeUp .5s ease-out both;
}

.day-group:nth-child(2) { animation-delay: .05s; }
.day-group:nth-child(3) { animation-delay: .1s; }
.day-group:nth-child(4) { animation-delay: .15s; }
.day-group:nth-child(5) { animation-delay: .2s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.day-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .75rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--clr-accent);
}

.day-date {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-primary);
  background: rgba(107,58,42,.08);
  padding: .25rem .65rem;
  border-radius: 6px;
  white-space: nowrap;
}

.day-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-text);
}

/* ===== Event Card ===== */
.event-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: .75rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.event-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

/* Probe variant */
.event-card.probe {
  background: var(--clr-probe-bg);
  border-color: transparent;
  box-shadow: none;
}

.event-card.probe:hover {
  box-shadow: none;
  transform: none;
}

.event-top {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
}

.event-time {
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-primary);
  min-width: 3.5rem;
}

.probe .event-time {
  color: var(--clr-probe-text);
}

.event-title {
  font-size: 1rem;
  font-weight: 500;
  flex: 1;
}

.probe .event-title {
  color: var(--clr-probe-text);
  font-style: italic;
}

.tag {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: .2rem .55rem;
  border-radius: 4px;
}

.tag-service {
  background: var(--clr-tag-service);
  color: #fff;
}

.tag-probe {
  background: var(--clr-tag-probe);
  color: #6e6258;
}

/* ===== Registration List ===== */
.reg-list {
  margin-top: .85rem;
  padding-top: .75rem;
  border-top: 1px solid var(--clr-border);
}

.reg-list h3 {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--clr-muted);
  margin-bottom: .5rem;
}

.reg-names {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.reg-names li {
  background: rgba(107,58,42,.06);
  color: var(--clr-text);
  padding: .25rem .7rem;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 500;
  animation: popIn .25s ease-out;
}

@keyframes popIn {
  from { opacity: 0; transform: scale(.85); }
  to   { opacity: 1; transform: scale(1); }
}

.reg-empty {
  font-size: .85rem;
  color: var(--clr-muted);
  font-style: italic;
}

/* ===== Sign-up Form ===== */
.signup-form {
  display: flex;
  gap: .5rem;
  margin-top: .75rem;
}

.signup-form input {
  flex: 1;
  padding: .6rem .85rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .9rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.signup-form input:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(107,58,42,.12);
}

.signup-form button {
  padding: .6rem 1.25rem;
  background: var(--clr-primary);
  color: var(--clr-primary-text);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.signup-form button:hover {
  background: var(--clr-primary-hover);
}

.signup-form button:active {
  transform: scale(.97);
}

.signup-form button:disabled {
  opacity: .5;
  cursor: not-allowed;
}

/* ===== Probe info ===== */
.probe-info {
  margin-top: .6rem;
  font-size: .8rem;
  color: var(--clr-probe-text);
  font-style: italic;
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: .8rem;
  color: var(--clr-muted);
  border-top: 1px solid var(--clr-border);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--clr-primary);
  color: #fff;
  padding: .65rem 1.5rem;
  border-radius: 30px;
  font-size: .9rem;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(44,36,32,.2);
  opacity: 0;
  transition: opacity .3s, transform .3s;
  z-index: 1000;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: #9b2c2c;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  .hero { padding: 2rem 1rem 1.8rem; }
  .hero-cross { font-size: 2rem; }
  main { padding: 1.25rem .75rem 2rem; }
  .event-card { padding: 1rem; }

  .signup-form {
    flex-direction: column;
  }

  .signup-form button {
    width: 100%;
  }
}