/* =========================================================
   BURNLIST — full-page layout, ember / burn aesthetic
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,700;0,900;1,700&family=DM+Mono:wght@300;400;500&display=swap');

:root {
  --bg-deep: #0a0806;
  --bg-mid: #110e0a;
  --bg-card: #1a1410;
  --ember: #ff5c1a;
  --ember-dim: #c4400d;
  --ember-glow: #ff8c4a;
  --ash: #7a6f65;
  --smoke: #3d3530;
  --text: #e8ddd5;
  --text-dim: #9e9088;
  --border: #2c221a;
  --radius: 10px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Mono', 'Courier New', monospace;
  --content-max: 1200px;
}

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

html {
  height: 100%;
}

[hidden] {
  display: none !important;
}

body {
  min-height: 100%;
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 100% 80% at 50% -15%, rgba(200, 60, 0, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 90% 85%, rgba(255, 80, 20, 0.08) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  font-family: var(--font-body);
  color: var(--text);
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--ember) 40%, var(--ember-glow) 60%, transparent 100%);
  animation: ember-line 4s ease-in-out infinite alternate;
  z-index: 10;
}

@keyframes ember-line {
  from { opacity: 0.6; }
  to { opacity: 1; }
}

/* ── App shell: full width, min-height ─────────────────────── */
.app {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: clamp(16px, 4vw, 48px);
  padding-bottom: clamp(32px, 6vw, 72px);
}

.hero {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto 2.5rem;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  position: relative;
  display: inline-block;
  text-shadow:
    0 0 40px rgba(255, 92, 26, 0.45),
    0 0 80px rgba(255, 92, 26, 0.15);
  animation: title-breathe 5s ease-in-out infinite alternate, fade-up 0.7s ease both;
}

@keyframes title-breathe {
  from { text-shadow: 0 0 30px rgba(255, 92, 26, 0.35), 0 0 70px rgba(255, 92, 26, 0.1); }
  to { text-shadow: 0 0 50px rgba(255, 92, 26, 0.6), 0 0 100px rgba(255, 92, 26, 0.2); }
}

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

.hero h1::after {
  content: '';
  display: block;
  width: 48px;
  height: 2px;
  background: var(--ember);
  margin: 14px auto 0;
  opacity: 0.85;
}

.tagline {
  margin-top: 1.25rem;
  max-width: 52ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  border-left: 2px solid var(--smoke);
  padding-left: 1rem;
  text-align: left;
  animation: fade-up 0.7s 0.1s ease both;
}

/* ── Two-column layout (fills horizontal space) ──────────── */
.layout {
  flex: 1;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 2rem);
  position: relative;
  animation: panel-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.panel--form {
  animation-delay: 0.05s;
}

.panel--info {
  animation-delay: 0.12s;
}

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

.panel::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 1px);
  background: linear-gradient(135deg, rgba(196, 64, 13, 0.35), transparent 55%);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

.panel > * {
  position: relative;
  z-index: 1;
}

.panel__title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ember-glow);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.panel__subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  font-weight: 500;
}

label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ash);
  margin-bottom: 8px;
  margin-top: 1.25rem;
}

label:first-of-type {
  margin-top: 0;
}

.field-hint {
  font-size: 0.68rem;
  line-height: 1.55;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.field-hint code {
  font-size: 0.85em;
  color: var(--ember-glow);
  background: rgba(0, 0, 0, 0.25);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

select,
input[type="number"],
textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 14px 18px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ff5c1a' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 42px;
}

textarea {
  resize: vertical;
  min-height: 64px;
  line-height: 1.45;
}

select:focus,
input[type="number"]:focus,
textarea:focus {
  border-color: var(--ember-dim);
  box-shadow: 0 0 0 3px rgba(255, 92, 26, 0.12), 0 0 18px rgba(255, 92, 26, 0.08);
}

select option {
  background: var(--bg-card);
  color: var(--text);
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}
input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

/* ── Buttons (primary + open playlist match) ─────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 1.75rem;
  padding: 16px 28px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.3s;
  box-sizing: border-box;
}

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--ember-dim) 0%, var(--ember) 60%, var(--ember-glow) 100%);
  box-shadow:
    0 4px 24px rgba(255, 92, 26, 0.35),
    0 1px 0 rgba(255, 255, 255, 0.08) inset;
}

.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 255, 255, 0.12) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 40px rgba(255, 92, 26, 0.5),
    0 1px 0 rgba(255, 255, 255, 0.1) inset;
}

.btn--primary:hover::before {
  opacity: 1;
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(255, 92, 26, 0.3);
}

/* Open playlist: same visual weight as login */
.btn--open {
  margin-top: 0;
  color: #0a0806;
  font-weight: 600;
  background: linear-gradient(135deg, #fff 0%, #f5ebe4 45%, var(--ember-glow) 160%);
  box-shadow:
    0 4px 28px rgba(255, 140, 74, 0.45),
    0 1px 0 rgba(255, 255, 255, 0.9) inset;
  border: 1px solid rgba(255, 140, 74, 0.5);
}

.btn--open::after {
  content: '↗';
  font-size: 1em;
  opacity: 0.85;
}

.btn--open:hover {
  transform: translateY(-2px);
  box-shadow:
    0 10px 36px rgba(255, 140, 74, 0.55),
    0 1px 0 rgba(255, 255, 255, 1) inset;
}

.btn--open:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 2px solid var(--ember-glow);
  outline-offset: 3px;
}

/* ── Status ──────────────────────────────────────────────── */
#status {
  margin-top: 1.25rem;
  font-size: 0.74rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--ash);
  min-height: 2.5em;
  text-align: center;
  transition: color 0.3s;
}

#status:not(:empty) {
  color: var(--ember-glow);
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 1; }
}

/* ── Burn panel ──────────────────────────────────────────── */
.burn-panel {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.burn-panel__label {
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ash);
  margin-bottom: 1rem;
}

/* ── Info column ───────────────────────────────────────────── */
.steps,
.tips {
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--text-dim);
  padding-left: 1.1rem;
}

.steps li + li,
.tips li + li {
  margin-top: 0.65rem;
}

.steps strong {
  color: var(--text);
  font-weight: 500;
}

/* ── Footer ────────────────────────────────────────────────── */
.site-footer {
  width: 100%;
  max-width: var(--content-max);
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--ash);
}

.site-footer a {
  color: var(--ember-glow);
  text-decoration: none;
  transition: color 0.2s;
}

.site-footer a:hover {
  color: #fff;
  text-decoration: underline;
}

.site-footer__dot {
  opacity: 0.5;
}

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--smoke);
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}