:root {
  --bg-a: #f8f4ea;
  --bg-b: #d6f0ff;
  --text: #10243b;
  --muted: rgba(16, 36, 59, 0.78);
  --accent: #006d77;
  --accent-2: #f2a900;
  --accent-3: #0f496f;
  --danger: #c53030;
  --ring: rgba(0, 109, 119, 0.25);
  --card-bg: rgba(255, 255, 255, 0.78);
  --card-border: rgba(16, 36, 59, 0.08);
  --card-shadow: 0 20px 60px rgba(16, 36, 59, 0.18);
  --block-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(245, 252, 255, 0.8));
  --block-border: rgba(16, 36, 59, 0.1);
  --brand-card-bg: linear-gradient(155deg, rgba(255, 255, 255, 0.92), rgba(246, 251, 255, 0.78));
  --brand-card-border: rgba(16, 36, 59, 0.14);
  --input-bg: #fff;
  --input-border: rgba(16, 36, 59, 0.18);
  --note-bg: rgba(0, 109, 119, 0.08);
  --note-border: #006d77;
  --appreciation-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(242, 248, 252, 0.92));
  --seo-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.84), rgba(244, 252, 255, 0.76));
  --modal-overlay-bg: rgba(4, 16, 30, 0.6);
  --modal-bg:
    radial-gradient(circle at 15% 10%, rgba(242, 169, 0, 0.18), transparent 35%),
    linear-gradient(150deg, rgba(255, 255, 255, 0.98), rgba(241, 250, 255, 0.94));
  --modal-border: rgba(255, 255, 255, 0.35);
  --contact-bg: rgba(255, 255, 255, 0.9);
  --contact-border: rgba(16, 36, 59, 0.18);
}

body[data-theme="light"] {
  --bg-a: #ffffff;
  --bg-b: #eef7ff;
  --card-bg: #ffffff;
  --card-border: rgba(16, 36, 59, 0.08);
  --card-shadow: 0 18px 46px rgba(16, 36, 59, 0.1);
  --block-bg: #ffffff;
  --block-border: rgba(16, 36, 59, 0.1);
  --brand-card-bg: #ffffff;
  --brand-card-border: rgba(16, 36, 59, 0.13);
  --note-bg: rgba(0, 109, 119, 0.1);
  --appreciation-bg: #ffffff;
  --seo-bg: #ffffff;
}

body[data-theme="dark"] {
  --bg-a: #0e1824;
  --bg-b: #071521;
  --text: #e8f2ff;
  --muted: rgba(232, 242, 255, 0.84);
  --accent: #22c3d7;
  --accent-3: #1889a8;
  --ring: rgba(34, 195, 215, 0.3);
  --card-bg: rgba(8, 18, 30, 0.78);
  --card-border: rgba(226, 240, 255, 0.12);
  --card-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --block-bg: linear-gradient(160deg, rgba(15, 29, 44, 0.92), rgba(10, 22, 36, 0.88));
  --block-border: rgba(226, 240, 255, 0.14);
  --brand-card-bg: linear-gradient(155deg, rgba(16, 31, 47, 0.96), rgba(10, 24, 40, 0.9));
  --brand-card-border: rgba(226, 240, 255, 0.16);
  --input-bg: rgba(9, 23, 38, 0.95);
  --input-border: rgba(218, 235, 255, 0.2);
  --note-bg: rgba(34, 195, 215, 0.12);
  --note-border: #22c3d7;
  --appreciation-bg: linear-gradient(160deg, rgba(17, 33, 49, 0.96), rgba(10, 24, 38, 0.92));
  --seo-bg: linear-gradient(160deg, rgba(15, 29, 44, 0.94), rgba(8, 21, 35, 0.9));
  --modal-overlay-bg: rgba(1, 7, 14, 0.74);
  --modal-bg:
    radial-gradient(circle at 15% 10%, rgba(34, 195, 215, 0.2), transparent 35%),
    linear-gradient(150deg, rgba(14, 28, 43, 0.98), rgba(8, 21, 35, 0.94));
  --modal-border: rgba(226, 240, 255, 0.2);
  --contact-bg: rgba(9, 23, 38, 0.95);
  --contact-border: rgba(218, 235, 255, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.95) 0%, transparent 45%),
    radial-gradient(circle at 90% 80%, rgba(242, 169, 0, 0.15) 0%, transparent 40%),
    linear-gradient(145deg, var(--bg-a), var(--bg-b));
}

.app-shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: clamp(14px, 3vw, 26px);
}

.card {
  width: min(980px, 100%);
  backdrop-filter: blur(10px);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 26px;
  padding: clamp(18px, 2.8vw, 30px);
  box-shadow: var(--card-shadow);
  animation: rise 420ms ease-out;
}

.eyebrow {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 10px 0 4px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1;
  font-family: "Syne", sans-serif;
}

.subtitle {
  margin: 0 0 18px;
  color: var(--muted);
}

.theme-switcher {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.theme-label {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 700;
}

.theme-toggle {
  display: inline-flex;
  gap: 6px;
  padding: 5px;
  border-radius: 999px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
}

.theme-btn {
  min-height: 34px;
  min-width: 82px;
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  font-size: 0.88rem;
}

.theme-btn:hover {
  background: rgba(0, 109, 119, 0.1);
}

.theme-btn.is-active {
  background: linear-gradient(140deg, var(--accent), var(--accent-3));
  color: #fff;
  box-shadow: 0 6px 16px rgba(0, 109, 119, 0.26);
}

.brand-header {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 14px;
  align-items: center;
  margin-bottom: 12px;
  position: relative;
}

.brand-main,
.brand-partner {
  background: var(--brand-card-bg);
  border: 1px solid var(--brand-card-border);
  border-radius: 16px;
  padding: 12px;
  text-align: center;
  overflow: hidden;
}

.brand-main {
  position: relative;
  border: 2px solid rgba(0, 109, 119, 0.56);
  box-shadow:
    0 16px 30px rgba(0, 109, 119, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
  transform: translateY(-2px);
  isolation: isolate;
}

.brand-main::before {
  content: "";
  position: absolute;
  inset: -35% -15% auto;
  height: 68%;
  background: radial-gradient(circle at center, rgba(0, 109, 119, 0.22), transparent 72%);
  filter: blur(10px);
  z-index: -1;
  pointer-events: none;
}

.brand-main::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 15%, rgba(255, 255, 255, 0.55) 38%, transparent 62%);
  transform: translateX(-130%);
  animation: brandShine 5.8s ease-in-out infinite;
  pointer-events: none;
}

.brand-partner {
  opacity: 0.97;
  box-shadow:
    0 10px 20px rgba(16, 36, 59, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.brand-logo {
  width: 100%;
  display: block;
  object-fit: contain;
}

.brand-logo-main {
  max-height: 170px;
}

.brand-logo-partner {
  max-height: 120px;
}

.brand-main-label,
.brand-partner-label {
  margin: 8px 0 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-main-label {
  color: var(--accent);
}

.brand-partner-label {
  color: var(--muted);
}

.give-back-note {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-left: 4px solid var(--note-border);
  background: var(--note-bg);
  border-radius: 8px;
  font-weight: 500;
}

.generator-workspace {
  margin-top: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 16px;
  align-items: start;
}

.control-panel,
.result {
  border: 1px solid var(--block-border);
  background: var(--block-bg);
  border-radius: 16px;
  padding: 16px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
}

.input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

input[type="url"] {
  flex: 1;
  min-height: 46px;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  background: var(--input-bg);
  color: var(--text);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

input[type="url"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--ring);
}

button {
  border: 0;
  border-radius: 12px;
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
}

#generate-btn {
  min-height: 46px;
  padding: 0 20px;
  background: linear-gradient(140deg, var(--accent), var(--accent-3));
  color: #fff;
  transition: transform 180ms ease, filter 180ms ease;
  white-space: nowrap;
}

#generate-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.controls-row {
  margin-top: 14px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.control-block label {
  margin-bottom: 8px;
}

select,
input[type="file"] {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.94rem;
  font-family: inherit;
  background: var(--input-bg);
  color: var(--text);
}

select:focus,
input[type="file"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--ring);
  outline: none;
}

.message {
  min-height: 1.4em;
  margin: 10px 0 0;
  font-size: 0.95rem;
}

.message.error {
  color: var(--danger);
}

.message.success {
  color: #137333;
}

.result {
  display: grid;
  gap: 14px;
  justify-items: center;
  align-content: start;
}

.qr-container {
  position: relative;
  width: clamp(230px, 31vw, 300px);
  height: clamp(230px, 31vw, 300px);
  border-radius: 18px;
  background: #fff;
  border: 1px solid rgba(16, 36, 59, 0.1);
  box-shadow: inset 0 0 0 8px #fff;
  display: grid;
  place-items: center;
}

.qr-container.clean {
  border-radius: 18px;
  box-shadow: inset 0 0 0 8px #fff;
}

.qr-container.rounded {
  border-radius: 30px;
  border: 2px solid rgba(0, 109, 119, 0.34);
  box-shadow: inset 0 0 0 10px #fff, 0 8px 20px rgba(0, 109, 119, 0.15);
}

.qr-container.ticket {
  border-radius: 12px;
  border: 2px dashed rgba(16, 36, 59, 0.35);
  box-shadow: inset 0 0 0 10px #fff;
}

.qr-container.badge {
  border-radius: 50%;
  border: 6px solid rgba(242, 169, 0, 0.75);
  box-shadow: inset 0 0 0 12px #fff;
}

.qr-container img,
.qr-container canvas {
  max-width: 100%;
  max-height: 100%;
  animation: fadeIn 260ms ease;
}

.logo-overlay {
  position: absolute;
  width: 62px;
  height: 62px;
  object-fit: contain;
  border-radius: 14px;
  border: 4px solid #fff;
  padding: 4px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(16, 36, 59, 0.28);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.download-btn {
  min-height: 46px;
  width: 100%;
  background: linear-gradient(140deg, #f2a900, #f0b429);
  color: #18222d;
  padding: 10px 14px;
}

.download-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.appreciation-box {
  width: 100%;
  margin-top: 2px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--block-border);
  background: var(--appreciation-bg);
}

.appreciation-box h3 {
  margin-top: 0;
  margin-bottom: 6px;
}

.appreciation-box p {
  margin-top: 0;
  margin-bottom: 10px;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.social-links a {
  text-decoration: none;
  background: linear-gradient(140deg, #10243b, #1a3b5d);
  color: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: transform 160ms ease, filter 160ms ease;
}

.social-links a:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

.seo-content {
  margin-top: 22px;
  padding: 18px;
  border-radius: 14px;
  background: var(--seo-bg);
  border: 1px solid var(--block-border);
}

.seo-content h2,
.seo-content h3 {
  margin: 0 0 10px;
  font-family: "Syne", sans-serif;
}

.seo-content h2 {
  font-size: 1.25rem;
}

.seo-content h3 {
  margin-top: 14px;
  font-size: 1rem;
}

.seo-content p {
  margin: 0;
  line-height: 1.5;
}

.seo-content ul,
.seo-content ol {
  margin: 0;
  padding-left: 18px;
  line-height: 1.5;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--modal-overlay-bg);
  backdrop-filter: blur(5px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: min(520px, 100%);
  border-radius: 18px;
  border: 1px solid var(--modal-border);
  background: var(--modal-bg);
  box-shadow: 0 24px 46px rgba(5, 23, 40, 0.35);
  padding: 22px;
  position: relative;
  transform: translateY(10px) scale(0.98);
  transition: transform 230ms ease;
}

.modal-overlay.is-open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(16, 36, 59, 0.2);
  background: #fff;
  color: #10243b;
  font-size: 1.4rem;
  line-height: 1;
}

.modal-tag {
  margin: 0 0 6px;
  color: #006d77;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  font-weight: 800;
  text-transform: uppercase;
}

.modal-card h2 {
  margin: 0 0 8px;
  font-family: "Syne", sans-serif;
  font-size: clamp(1.25rem, 3.7vw, 1.8rem);
}

.modal-card p {
  margin: 0;
  line-height: 1.55;
}

.modal-contact-grid {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.modal-contact-link {
  text-decoration: none;
  font-weight: 700;
  color: #10243b;
  background: var(--contact-bg);
  border: 1px solid var(--contact-border);
  border-radius: 12px;
  padding: 10px 12px;
}

.modal-contact-link:hover {
  border-color: #006d77;
}

.modal-ok-btn {
  margin-top: 14px;
  width: 100%;
  min-height: 44px;
  background: #006d77;
  color: #fff;
}

@keyframes brandShine {
  0%,
  80%,
  100% {
    transform: translateX(-130%);
  }
  25%,
  45% {
    transform: translateX(130%);
  }
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .generator-workspace {
    grid-template-columns: 1fr;
  }

  .brand-header {
    grid-template-columns: 1fr;
  }

  .brand-main {
    transform: none;
  }
}

@media (max-width: 640px) {
  .card {
    border-radius: 18px;
    padding: 18px;
  }

  .brand-logo-main {
    max-height: 140px;
  }

  .brand-logo-partner {
    max-height: 108px;
  }

  .input-row,
  .controls-row {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .theme-switcher {
    flex-wrap: wrap;
    gap: 6px;
  }

  .theme-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .theme-btn {
    flex: 1;
    min-width: 0;
  }

  #generate-btn,
  .download-btn {
    width: 100%;
  }

  .qr-container {
    width: min(82vw, 280px);
    height: min(82vw, 280px);
  }

  .social-links {
    flex-direction: column;
  }

  .social-links a {
    text-align: center;
  }

  .modal-card {
    padding: 18px;
    border-radius: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}