/* ==========================================================
   QR Code Generator — Stylesheet
   Clean, modern, mobile-first responsive design
   ========================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  --clr-primary: #4d9b97;
  --clr-primary-light: #5aada9;
  --clr-primary-dark: #3d7c79;
  --clr-secondary: #4596cf;
  --clr-accent: #e7c539;
  --clr-bg: #f0f5f4;
  --clr-card: #ffffff;
  --clr-text: #1e1e2f;
  --clr-text-muted: #6b7280;
  --clr-border: #d4e5e3;
  --clr-success: #4d9b97;
  --clr-error: #ef4444;
  --clr-warning: #e7c539;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(77, 155, 151, 0.15);
  --shadow-lg: 0 10px 40px rgba(77, 155, 151, 0.20);
  --font: 'Tajawal', 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  background: var(--clr-bg);
  background-image: url(''), url('patern2.png');
  background-position: top left, bottom right;
  background-repeat: no-repeat, no-repeat;
  background-size: 400px, 400px;
  background-attachment: fixed;
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  animation: fadeInUp 0.6s ease-out;
}

/* ---------- Hero / Header ---------- */
.hero {
  text-align: center;
  padding: 0.5rem 0;
}

.hero__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  transition: transform var(--transition);
}

.hero__logo img {
  max-width: 180px;
  height: auto;
  filter: drop-shadow(0 6px 24px rgba(77, 155, 151, 0.3));
}

.hero__logo:hover {
  transform: scale(1.05);
}

.hero__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--clr-text);
}

.hero__subtitle {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  margin-top: 0.35rem;
  max-width: 400px;
  margin-inline: auto;
}

/* ---------- Card ---------- */
.card {
  background: var(--clr-card);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(77, 155, 151, 0.1);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary), var(--clr-accent));
}

.card:hover {
  box-shadow: 0 12px 48px rgba(77, 155, 151, 0.25);
  border-color: rgba(77, 155, 151, 0.3);
}

/* ---------- Input Group ---------- */
.input-group__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-text-muted);
  margin-bottom: 0.45rem;
}

.input-group__wrapper {
  position: relative;
}

.input-group__field {
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 1rem;
  color: var(--clr-text);
  background: var(--clr-card);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-group__field::placeholder {
  color: #b0b5c0;
}

.input-group__field:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

.input-group__field.is-invalid {
  border-color: var(--clr-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.input-group__clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--clr-text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.input-group__clear:hover {
  background: var(--clr-bg);
  color: var(--clr-text);
}

.input-group__validation {
  font-size: 0.8rem;
  min-height: 1.3rem;
  margin-top: 0.3rem;
  transition: color var(--transition);
}

.input-group__validation.is-error {
  color: var(--clr-error);
}

.input-group__validation.is-success {
  color: var(--clr-success);
}

/* ---------- Options Row ---------- */
.options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.option-item__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-text-muted);
  margin-bottom: 0.35rem;
}

.option-item__select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--clr-text);
  background: var(--clr-card);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 2rem;
}

.option-item__select:focus {
  border-color: var(--clr-primary);
}

/* Color pickers */
.option-item__color-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.option-item__color {
  width: 36px;
  height: 36px;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 2px;
  background: none;
  transition: border-color var(--transition);
}

.option-item__color:focus {
  border-color: var(--clr-primary);
}

.option-item__color::-webkit-color-swatch-wrapper {
  padding: 0;
}

.option-item__color::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.option-item__color::-moz-color-swatch {
  border: none;
  border-radius: 4px;
}

.option-item__color-label {
  font-size: 0.8rem;
  font-family: 'Courier New', monospace;
  color: var(--clr-text-muted);
  user-select: all;
}

/* Logo upload */
.option-item__logo-wrapper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.option-item__logo-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}

.option-item__logo-btn:hover,
.option-item__logo-btn:focus-visible {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(108, 99, 255, 0.04);
}

.option-item__logo-btn.has-file {
  border-style: solid;
  border-color: var(--clr-success);
  color: var(--clr-success);
}

.option-item__logo-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: var(--clr-bg);
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.option-item__logo-remove:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--clr-error);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  outline: none;
  transition: all var(--transition);
  user-select: none;
  white-space: nowrap;
}

.btn__icon {
  flex-shrink: 0;
}

.btn--primary {
  width: 100%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(108, 99, 255, 0.3);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
  transform: translateY(-1px);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(108, 99, 255, 0.3);
}

.btn--primary:focus-visible {
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.3);
}

.btn--secondary {
  background: var(--clr-primary);
  color: #fff;
  flex: 1;
}

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

.btn--outline {
  background: transparent;
  border-color: var(--clr-border);
  color: var(--clr-text);
  flex: 1;
}

.btn--outline:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(108, 99, 255, 0.04);
  transform: translateY(-1px);
}

/* ---------- QR Output ---------- */
.qr-output {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  animation: fadeInUp 0.4s ease-out;
}

.qr-output__canvas {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.25rem;
  background: #fff;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.qr-output__canvas:hover {
  box-shadow: var(--shadow-md);
}

/* Override the library-generated canvas/img to be responsive */
.qr-output__canvas canvas,
.qr-output__canvas img {
  max-width: 100%;
  height: auto !important;
  display: block;
}

.qr-output__actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--clr-text);
  color: #fff;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.4s ease;
  white-space: nowrap;
}

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

.toast.toast--success {
  background: var(--clr-success);
}

.toast.toast--error {
  background: var(--clr-error);
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  padding: 0.5rem 0 1rem;
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ---------- Responsive ---------- */

/* Small phones */
@media (max-width: 480px) {
  body {
    padding: 1rem 0.75rem;
  }

  .hero__title {
    font-size: 1.4rem;
  }

  .hero__subtitle {
    font-size: 0.85rem;
  }

  .card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

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

  .qr-output__actions {
    flex-direction: column;
  }

  .btn--secondary,
  .btn--outline {
    width: 100%;
  }
}

/* Medium screens */
@media (min-width: 481px) and (max-width: 768px) {
  .options {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large screens — add gentle centering */
@media (min-height: 800px) {
  body {
    align-items: center;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Dark mode support (optional enhancement) */
@media (prefers-color-scheme: dark) {
  :root {
    --clr-bg: #13131a;
    --clr-card: #1e1e2f;
    --clr-text: #e8e8ed;
    --clr-text-muted: #9ca3af;
    --clr-border: #2d2d44;
  }

  .input-group__field {
    background: #25253a;
  }

  .option-item__select {
    background-color: #25253a;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  }

  .input-group__clear:hover {
    background: #2d2d44;
  }

  .qr-output__canvas {
    background: #fff; /* Keep QR background white for readability */
  }

  .option-item__logo-remove {
    background: #2d2d44;
  }
}