/* For Akku - Premium minimal styles */

:root {
  --bg: #0c0c0e;
  --bg-soft: #121216;
  --text: #f4f4f4;
  --text-secondary: #a8a8b0;
  --border: #2a2a2e;
  --card: #141418;
  --card-hover: #18181e;
  --accent: rgba(180, 170, 160, 0.15);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
  --glow: 0 0 0 1px rgba(255, 255, 255, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 4rem 1.5rem 4rem;
}

@media (min-width: 768px) {
  main {
    padding: 4.5rem 2rem 5rem;
  }
}

/* Nav */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  background: rgba(12, 12, 14, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

nav a:hover {
  color: var(--text);
  background: var(--accent);
}

nav a.active {
  color: var(--text);
  opacity: 1;
  border-bottom: 1px solid var(--text);
  border-radius: 0;
  padding-bottom: 0.25rem;
}

/* Typography */
h1, h2, h3 {
  font-weight: 500;
  line-height: 1.3;
  margin-top: 0;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  margin-bottom: 1.5rem;
  color: var(--text);
}

.section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

p {
  margin: 0 0 1rem;
  max-width: 52rem;
}

p:last-child {
  margin-bottom: 0;
}

/* Home background reveal (index only) */
.page-home .home-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: #000;
}

.page-home .home-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.page-home .home-bg.revealed .home-bg-img {
  opacity: 1;
}

.page-home main,
.page-home footer {
  position: relative;
  z-index: 1;
}

.page-home.home-revealed main {
  background: rgba(12, 12, 14, 0.88);
}

.page-home.home-revealed footer {
  background: rgba(12, 12, 14, 0.92);
}

/* Entry overlay (index only) */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.overlay p {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 24rem;
}

.overlay .btn {
  margin-top: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease, background 0.25s ease, border-color 0.2s ease;
}

.btn:hover {
  background: var(--card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover), var(--glow);
  border-color: rgba(255, 255, 255, 0.08);
}

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

.btn-primary {
  background: var(--card-hover);
  border-color: var(--border);
}

/* Sections */
section {
  margin-bottom: 4rem;
}

section:last-of-type {
  margin-bottom: 2rem;
}

.fade {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Letter block */
.letter-block {
  max-width: 860px;
}

.letter-block p {
  margin-bottom: 1.25rem;
}

/* Poem block */
.poem-block {
  max-width: 36rem;
}

.poem-line {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  margin-bottom: 0.5rem;
}

.poem-line.visible {
  opacity: 1;
  transform: translateY(0);
}

.poem-line:last-child {
  margin-bottom: 0;
}

/* Memory cards */
.moments-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 600px) {
  .moments-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

.memory-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow), var(--glow);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease, border-color 0.2s ease;
}

.memory-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover), var(--glow);
  border-color: rgba(255, 255, 255, 0.06);
}

.memory-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Promises */
.promises-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.promises-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.promises-list li:last-child {
  border-bottom: none;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

footer p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Vouchers page */
.page-vouchers {
  background: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(28, 26, 32, 0.4), transparent 50%), var(--bg);
}

.page-vouchers main {
  padding-top: 5rem;
}

.vouchers-section .voucher-label {
  opacity: 0;
  animation: voucherFadeUp 0.6s ease forwards;
}

.vouchers-section .voucher-title {
  opacity: 0;
  animation: voucherFadeUp 0.6s ease 0.08s forwards;
}

.vouchers-section .voucher-subtitle {
  opacity: 0;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  animation: voucherFadeUp 0.6s ease 0.16s forwards;
}

@keyframes voucherFadeUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes voucherCardIn {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.vouchers-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.voucher-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow), var(--glow);
  opacity: 0;
  animation: voucherCardIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease, border-color 0.3s ease, background 0.25s ease;
}

.voucher-card:nth-child(1) { animation-delay: 0.1s; }
.voucher-card:nth-child(2) { animation-delay: 0.18s; }
.voucher-card:nth-child(3) { animation-delay: 0.26s; }
.voucher-card:nth-child(4) { animation-delay: 0.34s; }
.voucher-card:nth-child(5) { animation-delay: 0.42s; }
.voucher-card:nth-child(6) { animation-delay: 0.5s; }

.voucher-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-hover), 0 0 0 1px rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.08);
  background: var(--card-hover);
}

.voucher-card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
  transition: color 0.2s ease;
}

.voucher-card:hover h3 {
  color: var(--text);
}

.voucher-card .description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  line-height: 1.55;
  transition: color 0.2s ease;
}

.voucher-card:hover .description {
  color: var(--text-secondary);
}

.voucher-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.voucher-card .pill {
  font-size: 0.72rem;
  padding: 0.4rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.2s ease;
}

.voucher-card:hover .pill {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

.voucher-card .btn {
  width: 100%;
  text-align: center;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease, background 0.25s ease;
}

.voucher-card .btn:hover {
  transform: translateY(-2px) scale(1.02);
}