/* CSS Design System for Poster Mockup Generator */

:root {
  --bg-main: #f9fbfd;
  --bg-card: #ffffff;
  --bg-input: #f4f7f9;
  --color-primary: #10b981; /* Soft green accents */
  --color-primary-hover: #059669;
  --color-secondary: #f3f4f6;
  --color-secondary-hover: #e5e7eb;
  --color-text-main: #1f2937; /* Slate dark text */
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-border-active: #d1d5db;
  --font-family: 'Inter', sans-serif;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-premium: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
}

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

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

/* Common Components */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  font-size: 14px;
  padding: 10px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  font-family: var(--font-family);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-hover);
}

.btn-success {
  background-color: #0ea5e9; /* Sky blue */
  color: #ffffff;
}

.btn-success:hover {
  background-color: #0284c7;
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 14px 20px;
  font-size: 16px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--border-radius-sm);
}

.hidden {
  display: none !important;
}

/* Loading Spinner */

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(16, 185, 129, 0.1);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Global Loader */

.global-loader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  transition: opacity 0.3s ease-out;
}

/* Login Panel */

.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-premium);
  border: 1px solid var(--color-border);
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-header p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.login-form .input-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text-muted);
}

.login-form input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--bg-input);
  font-family: var(--font-family);
  font-size: 14px;
  transition: border-color 0.2s;
}

.login-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: #ffffff;
}

.login-error {
  color: #ef4444;
  font-size: 13px;
  margin-bottom: 16px;
  padding: 8px 12px;
  background-color: #fee2e2;
  border-radius: var(--border-radius-sm);
  border: 1px solid #fca5a5;
}

/* App Main Layout */

.app-container {
  display: flex;
  flex-col: column;
  min-height: 100vh;
  flex-direction: column;
}

/* Navbar */

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  font-size: 18px;
}

.navbar-brand h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 16px;
}

#user-email-display {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* Workspace Layout */

.app-content {
  display: grid;
  grid-template-columns: 380px 1fr;
  flex: 1;
  gap: 30px;
  padding: 30px 40px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* Card layout */

.card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 30px;
}

.card-header {
  margin-bottom: 24px;
}

.card-header h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.card-header p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Upload Dropzone */

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-main);
}

.upload-wrapper {
  margin-bottom: 24px;
}

.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 32px 20px;
  text-align: center;
  background-color: var(--bg-input);
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--color-primary);
  background-color: rgba(16, 185, 129, 0.02);
}

.hidden-input {
  display: none;
}

.upload-icon {
  width: 48px;
  height: 48px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2310b981'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M3 16.5v2.25A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75V16.5m-13.5-9L12 3m0 0l4.5 4.5M12 3v13.5'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  margin: 0 auto 16px auto;
}

.upload-text {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.upload-bold {
  color: var(--color-primary);
  font-weight: 600;
}

.upload-hint {
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Upload Preview */

.preview-wrapper {
  margin-top: 16px;
}

.preview-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--bg-card);
}

.preview-image-container {
  width: 48px;
  height: 64px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background-color: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-info {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
}

.preview-filename {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-main);
  max-width: 180px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-remove {
  background: none;
  border: none;
  width: 24px;
  height: 24px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23ef4444'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M6 18L18 6M6 6l12 12'/%3E%3C/svg%3E");
  background-size: 16px 16px;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 50%;
  transition: background-color 0.2s;
}

.btn-remove:hover {
  background-color: #fee2e2;
}

/* Custom Dropdown (Select) */

.form-group {
  margin-bottom: 20px;
}

.label-with-tooltip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.label-with-tooltip .form-label {
  margin-bottom: 0;
}

.custom-select {
  position: relative;
  width: 100%;
}

.select-trigger {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: 14px;
  color: var(--color-text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s;
  user-select: none;
}

.select-trigger:hover {
  border-color: var(--color-border-active);
}

.custom-select.open .select-trigger {
  border-color: var(--color-primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.chevron {
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19.5 8.25l-7.5 7.5-7.5-7.5'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform 0.25s;
}

.custom-select.open .chevron {
  transform: rotate(180deg);
}

.select-options {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  width: 100%;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.custom-select.open .select-options {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.select-option {
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  color: var(--color-text-main);
  transition: background-color 0.15s;
}

.select-option:hover {
  background-color: var(--bg-input);
}

.select-option.selected {
  background-color: rgba(16, 185, 129, 0.08);
  color: var(--color-primary-hover);
  font-weight: 500;
}

/* Custom Tooltips */

.tooltip-container {
  position: relative;
  display: inline-flex;
  cursor: pointer;
}

.info-icon {
  width: 16px;
  height: 16px;
  background-color: var(--color-secondary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.info-icon:hover {
  background-color: var(--color-secondary-hover);
}

.custom-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: 220px;
  background-color: #1f2937;
  color: #ffffff;
  font-size: 11px;
  line-height: 1.4;
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 150;
  text-align: center;
}

.custom-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #1f2937 transparent transparent transparent;
}

.tooltip-container:hover .custom-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Custom Checkbox */

.custom-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.custom-checkbox input {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--bg-input);
  position: relative;
  transition: all 0.15s;
}

.custom-checkbox input:checked + .checkmark {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.checkmark::after {
  content: "";
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 4px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.custom-checkbox input:checked + .checkmark::after {
  display: block;
}

.custom-checkbox .label-text {
  font-size: 13px;
  color: var(--color-text-muted);
}

.custom-checkbox:hover .checkmark {
  border-color: var(--color-border-active);
}

/* Generate Button Details */

#btn-generate {
  position: relative;
  display: flex;
  gap: 8px;
}

.btn-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Results Content Section */

.results-section {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.results-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  border: 1px dashed var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.empty-icon {
  width: 64px;
  height: 64px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23d1d5db'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='1.2' d='M2.25 15.75l5.159-5.159a2.25 2.25 0 013.182 0l5.159 5.159m-1.5-1.5l1.409-1.409a2.25 2.25 0 013.182 0l2.909 2.909m-18 3.75h16.5a1.5 1.5 0 001.5-1.5V6a1.5 1.5 0 00-1.5-1.5H3.75A1.5 1.5 0 002.25 6v12a1.5 1.5 0 001.5 1.5zm10.5-11.25h.008v.008h-.008V6.75zm.375 0a.375.375 0 11-.75 0 .375.375 0 01.75 0z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  margin-bottom: 20px;
}

.results-empty h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.results-empty p {
  font-size: 13px;
  color: var(--color-text-muted);
  max-width: 440px;
  line-height: 1.5;
}

/* Results Loading state */

.results-loading {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-lg);
  background-color: var(--bg-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 40px;
  text-align: center;
}

.loading-animation-wrapper {
  max-width: 400px;
  width: 100%;
}

.loading-animation-wrapper h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.loading-animation-wrapper p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
}

/* 3D grid cube loading animation */
.loading-cubes {
  display: grid;
  grid-template-columns: 20px 20px;
  grid-gap: 4px;
  margin: 0 auto 30px auto;
  width: 44px;
  height: 44px;
}

.cube {
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  border-radius: 4px;
  animation: cube-move 1.5s ease-in-out infinite alternate;
}

.cube:nth-child(1) { animation-delay: 0s; }
.cube:nth-child(2) { animation-delay: 0.3s; background-color: #34d399; }
.cube:nth-child(3) { animation-delay: 0.6s; background-color: #6ee7b7; }
.cube:nth-child(4) { animation-delay: 0.9s; background-color: #a7f3d0; }

@keyframes cube-move {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.2); opacity: 1; }
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background-color: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

/* Mockup Results Content */

.results-content {
  flex: 1;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.results-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.download-icon-white {
  display: inline-block;
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M3 16.5v2.25A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75V16.5M16.5 12L12 16.5m0 0L7.5 12m4.5 4.5V3'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  margin-right: 8px;
  vertical-align: middle;
}

/* Grid Layout */

.mockup-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.mockup-card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.mockup-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.mockup-img-container {
  position: relative;
  background-color: var(--bg-input);
  aspect-ratio: 1; /* Standard aspect ratio in card container */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.mockup-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.mockup-card:hover .mockup-img-container img {
  transform: scale(1.02);
}

.mockup-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.mockup-img-container:hover .mockup-overlay {
  opacity: 1;
}

.btn-view {
  background-color: var(--bg-card);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 10px 20px;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.2s;
}

.btn-view:hover {
  background-color: var(--bg-input);
  transform: scale(1.05);
}

.mockup-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-top: 1px solid var(--color-border);
}

.mockup-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Custom Modal Backdrop with blur */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(31, 41, 55, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.modal-backdrop.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-container {
  background-color: #ffffff;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-premium);
  max-width: 900px;
  width: 100%;
  display: flex;
  flex-direction: column;
  max-height: 90vh;
  border: 1px solid var(--color-border);
  transform: translateY(0);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.hidden .modal-container {
  transform: translateY(16px);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h4 {
  font-size: 16px;
  font-weight: 600;
}

.btn-close-modal {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.15s;
}

.btn-close-modal:hover {
  color: #ef4444;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-input);
  min-height: 300px;
}

.modal-body img {
  max-width: 100%;
  max-height: 55vh;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  object-fit: contain;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

/* Margin and Utility Helpers */

.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }

/* Responsive adjustments */

@media (max-width: 992px) {
  .app-content {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 20px;
  }
  
  .navbar {
    padding: 16px 20px;
  }
}

@media (max-width: 576px) {
  .mockup-grid {
    grid-template-columns: 1fr;
  }
  
  .login-card {
    padding: 24px;
  }
  
  .modal-container {
    max-height: 95vh;
  }
}