* {
  box-sizing: border-box;
}

:root {
  --bg: #020617;
  --bg-soft: #020617;
  --card: #020617;
  --accent: #f97316;
  --accent-soft: rgba(249, 115, 22, 0.2);
  --text: #f9fafb;
  --text-soft: #9ca3af;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.9);
  --border-subtle: 1px solid rgba(148, 163, 184, 0.25);
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #111827 0, #020617 42%, #020617 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */

.app-header {
  padding: 16px 24px;
  border-bottom: var(--border-subtle);
  backdrop-filter: blur(16px);
  background: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.6));
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo span {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.logo small {
  font-size: 0.75rem;
  color: var(--text-soft);
}

/* Layout */

.app-main {
  flex: 1;
  display: flex;
  gap: 20px;
  padding: 20px;
}

.panel {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.08), transparent),
    linear-gradient(to bottom right, rgba(15, 23, 42, 0.98), #020617);
  border-radius: var(--radius-xl);
  border: var(--border-subtle);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 22px;
  display: flex;
  flex-direction: column;
}

.left-panel {
  flex: 0.9;
  min-width: 260px;
  max-width: 420px;
}

.right-panel {
  flex: 1.4;
  min-width: 0;
}

.section-block {
  margin-bottom: 16px;
}

.section-block:last-child {
  margin-bottom: 0;
}

.section-block h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 600;
}

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

/* Categories */

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  font-size: 0.78rem;
  color: var(--text-soft);
  background: rgba(15, 23, 42, 0.9);
  cursor: pointer;
  transition: all 0.15s ease;
}

.category-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.category-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: #fed7aa;
}

/* Templates */

.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  max-height: 350px;
  overflow: auto;
  padding-right: 4px;
}

.template-card {
  background: rgba(15, 23, 42, 0.96);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(31, 41, 55, 0.9);
  padding: 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border 0.15s ease;
}

.template-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.9);
  border-color: rgba(250, 204, 21, 0.9);
}

.template-thumb {
  height: 80px;
  border-radius: 13px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.template-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(0, 0, 0, 0.15), transparent);
}

.template-label {
  font-size: 0.8rem;
  font-weight: 500;
}

.template-meta {
  font-size: 0.7rem;
  color: var(--text-soft);
}

/* Buttons */

.chip-btn {
  border-radius: 999px;
  border: 1px dashed rgba(249, 115, 22, 0.7);
  background: rgba(249, 115, 22, 0.14);
  padding: 4px 10px;
  font-size: 0.74rem;
  color: #fed7aa;
  cursor: pointer;
}

.primary-btn,
.secondary-btn {
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.primary-btn {
  background: linear-gradient(to right, #f97316, #ea580c);
  color: white;
  box-shadow: 0 12px 30px rgba(234, 88, 12, 0.7);
}

.secondary-btn {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.6);
  color: var(--text-soft);
}

.primary-btn:active,
.secondary-btn:active {
  transform: translateY(1px);
}

/* Preview */

.preview-wrapper {
  padding: 8px 0;
  display: flex;
  justify-content: center;
}

.preview-card {
  width: 360px;
  height: 360px;
  border-radius: 28px;
  padding: 14px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.9);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.95);
  display: flex;
  flex-direction: column;
}

.preview-badge-row {
  display: flex;
  justify-content: flex-start;
}

.preview-occasion {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(15, 23, 42, 0.7);
  color: #fefce8;
  margin-bottom: 6px;
  border: 1px solid rgba(250, 250, 250, 0.22);
}

.preview-image-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.9);
  width: 100%;
  aspect-ratio: 1 / 1;
  background: rgba(0,0,0,0.3);
}

.preview-image-wrap img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  user-select: none;
  pointer-events: none;
  will-change: transform;
}

.preview-text {
  padding: 4px 2px 2px;
}

.preview-to {
  font-size: 0.8rem;
  color: #fef3c7;
  margin-bottom: 4px;
}

.preview-to span {
  font-weight: 600;
}

.preview-message {
  font-size: 0.84rem;
  line-height: 1.4;
  margin-bottom: 4px;
}

.preview-from {
  font-size: 0.78rem;
  text-align: right;
  color: #e5e7eb;
}

/* Themes */

.theme-diwali {
  background: radial-gradient(circle at top, #facc15, #a855f7, #020617);
}

.theme-eid {
  background: radial-gradient(circle at top, #16a34a, #022c22, #020617);
}

.theme-holi {
  background: conic-gradient(from 160deg, #f97316, #db2777, #22c55e, #0ea5e9, #f97316);
}

.theme-rakhi {
  background: radial-gradient(circle at top, #fb7185, #f97316, #1f2937);
}

.theme-morning {
  background: linear-gradient(135deg, #0284c7, #f97316);
}

.theme-classic {
  background: radial-gradient(circle at top, #111827, #020617);
}

/* Form */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  font-size: 0.75rem;
  color: var(--text-soft);
}

input[type="text"],
input[type="file"],
textarea,
select {
  background: rgba(15, 23, 42, 0.96);
  border-radius: 10px;
  border: 1px solid rgba(55, 65, 81, 0.9);
  padding: 7px 9px;
  font-size: 0.8rem;
  color: var(--text);
  outline: none;
}

input[type="text"]:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
}

textarea {
  resize: vertical;
}

.hint {
  font-size: 0.7rem;
  color: var(--text-soft);
}

.action-row {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Footer */

.app-footer {
  padding: 10px 18px 14px;
  font-size: 0.7rem;
  color: var(--text-soft);
  text-align: center;
  border-top: var(--border-subtle);
  background: rgba(15, 23, 42, 0.96);
}

/* Responsive */

@media (max-width: 900px) {
  .app-main {
    flex-direction: column;
  }

  .left-panel {
    max-width: 100%;
  }

  .preview-card {
    width: 100%;
    max-width: 360px;
  }
}

@media (max-width: 600px) {
  .app-main {
    padding: 12px;
  }

  .panel {
    padding: 14px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}