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

:root {
  --color-cream: #fdfbf7;
  --color-cream-dark: #f5f0e8;
  --color-gold: #c9a96e;
  --color-gold-light: #dcc390;
  --color-gold-dark: #a0834b;
  --color-text: #4a4036;
  --color-text-light: #7a6f63;
  --color-white: #ffffff;
  --color-error: #c0392b;
  --color-success: #27ae60;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-body: 'Lora', Georgia, serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(74, 64, 54, 0.08);
  --shadow-md: 0 4px 12px rgba(74, 64, 54, 0.12);
  --shadow-lg: 0 8px 30px rgba(74, 64, 54, 0.15);
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--color-cream);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  text-align: center;
  padding: 2rem 0 1.5rem;
}

.ornament {
  font-size: 1.5rem;
  color: var(--color-gold);
  line-height: 1;
}

.ornament.top {
  margin-bottom: 0.75rem;
}

.ornament.bottom {
  margin-top: 0.75rem;
}

.title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  font-style: italic;
}

/* Main */
.main {
  flex: 1;
}

/* Upload Section */
.upload-section {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.upload-area {
  position: relative;
  border: 2px dashed var(--color-gold-light);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  margin-bottom: 1.5rem;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--color-gold);
  background: var(--color-cream-dark);
  transform: scale(1.01);
}

.file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

.upload-icon svg {
  width: 100%;
  height: 100%;
}

.upload-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.upload-hint {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.upload-formats {
  font-size: 0.75rem;
  color: var(--color-text-light);
  opacity: 0.8;
  margin-top: 0.25rem;
}

/* Guest Info */
.guest-info {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-cream-dark);
  border-radius: var(--radius-sm);
  background: var(--color-cream);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
  opacity: 0.6;
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

/* Preview Section */
.preview-section {
  margin-bottom: 1.5rem;
  animation: fadeIn 0.3s ease-out;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.preview-count {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.btn-clear {
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-light);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 0.25rem;
}

.btn-clear:hover {
  color: var(--color-error);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
}

.preview-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-cream-dark);
  box-shadow: var(--shadow-sm);
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.preview-item .remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  color: var(--color-error);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease;
}

.preview-item .remove-btn:hover {
  transform: scale(1.1);
}

.preview-item .progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.3);
}

.preview-item .progress-bar .progress-fill {
  height: 100%;
  background: var(--color-gold);
  transition: width 0.3s ease;
  width: 0%;
}

.preview-item .status-icon {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: white;
}

.preview-item .status-icon.success {
  background: var(--color-success);
}

.preview-item .status-icon.error {
  background: var(--color-error);
}

/* Buttons */
.btn-upload,
.btn-secondary {
  width: 100%;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-upload {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-upload:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-upload:active:not(:disabled) {
  transform: translateY(0);
}

.btn-upload:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-text);
  border: 1px solid var(--color-cream-dark);
  box-shadow: var(--shadow-sm);
  margin-top: 1rem;
}

.btn-secondary:hover {
  background: var(--color-cream-dark);
  border-color: var(--color-gold-light);
}

/* Loader */
.btn-loader {
  display: flex;
  align-items: center;
}

.spinner {
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

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

/* Success Section */
.success-section,
.error-section {
  text-align: center;
  padding: 3rem 1rem;
  animation: fadeIn 0.5s ease-out;
}

.success-icon,
.error-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.success-icon {
  color: var(--color-error);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.error-icon {
  color: var(--color-error);
}

.success-title,
.error-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.success-message,
.error-message {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 320px;
  margin: 0 auto;
}

/* Footer */
.footer {
  text-align: center;
  padding-top: 2rem;
  margin-top: auto;
}

.footer p {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* Hidden utility */
[hidden] {
  display: none !important;
}

/* Responsive */
@media (min-width: 480px) {
  .container {
    padding: 2rem 1.5rem 3rem;
  }

  .title {
    font-size: 2.75rem;
  }

  .upload-area {
    padding: 2.5rem 2rem;
  }

  .preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
  }
}

@media (min-width: 768px) {
  .title {
    font-size: 3.25rem;
  }

  .subtitle {
    font-size: 1.125rem;
  }

  .upload-area {
    padding: 3rem 2rem;
  }

  .upload-text {
    font-size: 1.25rem;
  }
}