/* ========== متغیرها و تم ========== */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #131829;
  --bg-tertiary: #1c2237;
  --surface: rgba(28, 34, 55, 0.6);
  --surface-hover: rgba(40, 48, 75, 0.8);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #a8b2d1;
  --text-muted: #6b7593;
  --accent: #667eea;
  --accent-hover: #7c8ff0;
  --accent-2: #764ba2;
  --success: #10b981;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(102, 126, 234, 0.3);
  --radius: 14px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f5f7fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #ffffff;
  --surface: rgba(255, 255, 255, 0.85);
  --surface-hover: rgba(255, 255, 255, 1);
  --border: rgba(0, 0, 0, 0.06);
  --border-hover: rgba(0, 0, 0, 0.12);
  --text-primary: #1a1f36;
  --text-secondary: #4a5375;
  --text-muted: #8b94b3;
  --shadow: 0 8px 32px rgba(102, 126, 234, 0.1);
}

/* ========== ریست و پایه ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: 'Vazirmatn', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

/* ========== پس‌زمینه متحرک ========== */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s ease-in-out infinite;
}

.orb1 {
  width: 500px;
  height: 500px;
  background: #667eea;
  top: -10%;
  right: -10%;
}

.orb2 {
  width: 400px;
  height: 400px;
  background: #f5576c;
  bottom: -10%;
  left: -5%;
  animation-delay: -7s;
}

.orb3 {
  width: 350px;
  height: 350px;
  background: #764ba2;
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -60px) scale(1.1); }
  66% { transform: translate(-40px, 40px) scale(0.95); }
}

/* ========== هدر ========== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  position: sticky;
  top: 0;
  backdrop-filter: blur(20px);
  background: rgba(10, 14, 26, 0.5);
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.7);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo i {
  font-size: 1.6rem;
  -webkit-text-fill-color: #667eea;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.icon-btn:hover {
  background: var(--surface-hover);
  transform: translateY(-2px);
}

/* ========== کانتینر و Hero ========== */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 30px 40px;
}

.hero {
  text-align: center;
  margin-bottom: 40px;
  animation: fadeInDown 0.8s;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.features-pills {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.pill {
  padding: 8px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 30px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(10px);
}

.pill i {
  color: var(--accent);
}

/* ========== آپلود ========== */
.upload-section {
  animation: fadeInUp 0.8s;
}

.upload-box {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius);
  padding: 60px 40px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.upload-box:hover,
.upload-box.drag-over {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.upload-box:hover::before {
  opacity: 0.05;
}

.upload-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.upload-box h2 {
  font-size: 1.6rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.upload-box p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.supported-formats {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.supported-formats code {
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: 'Vazirmatn', monospace;
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid var(--border);
}

/* ========== دکمه‌ها ========== */
.btn-primary {
  background: var(--gradient);
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Vazirmatn', sans-serif;
  transition: all var(--transition);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(102, 126, 234, 0.4);
}

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

.btn-primary.big {
  padding: 16px 32px;
  font-size: 1.05rem;
  width: 100%;
  justify-content: center;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Vazirmatn', sans-serif;
  transition: all var(--transition);
  width: 100%;
}

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

/* ========== ادیتور ========== */
.editor-section {
  animation: fadeInUp 0.6s;
}

.hidden {
  display: none !important;
}

.editor-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1024px) {
  .editor-grid {
    grid-template-columns: 1fr;
  }
}

/* پنل پیش‌نمایش */
.preview-panel,
.controls-panel {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-header h3 i {
  color: var(--accent);
}

.preview-tabs {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: 10px;
  padding: 4px;
  gap: 4px;
}

.tab-btn {
  padding: 6px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  font-family: 'Vazirmatn', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}

.tab-btn.active {
  background: var(--gradient);
  color: white;
}

.preview-container {
  position: relative;
  background:
    linear-gradient(45deg, rgba(255,255,255,0.04) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.04) 75%),
    linear-gradient(45deg, rgba(255,255,255,0.04) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.04) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

[data-theme="light"] .preview-container {
  background:
    linear-gradient(45deg, rgba(0,0,0,0.04) 25%, transparent 25%, transparent 75%, rgba(0,0,0,0.04) 75%),
    linear-gradient(45deg, rgba(0,0,0,0.04) 25%, transparent 25%, transparent 75%, rgba(0,0,0,0.04) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
}

#previewCanvas {
  max-width: 100%;
  max-height: 500px;
  display: block;
  border-radius: 6px;
}

.image-info {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  backdrop-filter: blur(10px);
}

.preview-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

.stat {
  background: var(--bg-tertiary);
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid var(--border);
}

.stat.highlight {
  background: var(--gradient);
  border: none;
}

.stat.highlight .stat-label,
.stat.highlight .stat-value {
  color: white;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ========== کنترل‌ها ========== */
.control-group {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.control-group:last-of-type {
  border-bottom: none;
}

.group-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.group-label i {
  color: var(--accent);
}

.value-badge {
  margin-right: auto;
  background: var(--gradient);
  color: white;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* فرمت */
.format-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.format-btn {
  padding: 12px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-family: 'Vazirmatn', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}

.format-btn:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.format-btn.active {
  background: var(--gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.3);
}

/* اسلایدر */
.slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-tertiary);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--gradient);
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid var(--bg-secondary);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
  transition: transform 0.15s;
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid var(--bg-secondary);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.preset-row {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.preset-btn,
.size-preset {
  flex: 1;
  padding: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  font-family: 'Vazirmatn', sans-serif;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
}

.preset-btn:hover,
.size-preset:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.preset-btn.active {
  background: var(--accent);
  color: white;
  border-color: transparent;
}

/* ابعاد */
.dimensions-row {
  display: flex;
  align-items: flex-end;
  gap: 10px;
}

.input-wrap {
  flex: 1;
}

.input-wrap label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.input-wrap input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-family: 'Vazirmatn', sans-serif;
  font-size: 0.95rem;
  transition: border var(--transition);
}

.input-wrap input:focus {
  outline: none;
  border-color: var(--accent);
}

.lock-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0px;
  transition: all var(--transition);
}

.lock-btn.active {
  background: var(--accent);
  color: white;
  border-color: transparent;
}

/* ادیت‌ها */
.edit-control {
  margin-bottom: 12px;
}

.edit-control label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.edit-control label span {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.8rem;
}

.rotate-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.action-btn {
  flex: 1;
  height: 42px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.action-btn:hover {
  background: var(--accent);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
}

/* دکمه‌های نهایی */
.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 30px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 40px;
  border-top: 1px solid var(--border);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  backdrop-filter: blur(20px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast.success {
  border-color: var(--success);
}

.toast.success::before {
  content: '✓';
  background: var(--success);
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* انیمیشن‌ها */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* پاسخگو */
@media (max-width: 768px) {
  .header { padding: 16px 20px; }
  .container { padding: 20px; }
  .upload-box { padding: 40px 20px; }
  .preview-stats { grid-template-columns: 1fr; }
  .preset-row { flex-wrap: wrap; }
  .format-grid { grid-template-columns: repeat(2, 1fr); }
}

/* اسکرول‌بار */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 10px;
}