/* ============================================
   DENTAVIZION — Base Styles
   🌈 Kid-Friendly Fun Edition! 🦷
   ============================================ */

/* ── Google Fonts Import — Rounded & Fun ── */
@import url('https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,400;0,600;0,700;0,800;0,900;1,400;1,700&display=swap');

/* ── Modern CSS Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  /* Fun subtle pattern background */
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0, 201, 167, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 123, 84, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(255, 217, 61, 0.04) 0%, transparent 50%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* Remove default list styling */
ul, ol {
  list-style: none;
}

/* Remove default link styling */
a {
  color: inherit;
  text-decoration: none;
}

/* Make images responsive */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Remove built-in form typography */
input, button, textarea, select {
  font: inherit;
  color: inherit;
}

/* Remove textarea resize */
textarea {
  resize: vertical;
}

/* Remove button default styling */
button {
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

/* Headings — Fun & Bold */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-extrabold);
  line-height: var(--leading-tight);
  overflow-wrap: break-word;
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  overflow-wrap: break-word;
}

/* ── Accessibility: Focus Styles ── */
:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

[data-mode="blind"] :focus-visible {
  outline: 4px solid #000000;
  outline-offset: 4px;
  box-shadow: 0 0 0 8px rgba(0, 0, 0, 0.15);
}

/* ── Skip to Content (Screen Reader) ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: var(--z-tooltip);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-base);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* ── Layout Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Visually Hidden (Screen Reader Only) ── */
.sr-only,
.a11y-announcement {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ── Utility: No scroll ── */
.no-scroll {
  overflow: hidden;
}

/* ── Animations — Playful & Bouncy! ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
  70% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

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

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-5deg); }
  75% { transform: rotate(5deg); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.5;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes rainbow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

@keyframes popIn {
  0% { transform: scale(0) rotate(-10deg); opacity: 0; }
  60% { transform: scale(1.15) rotate(3deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

/* ── Reduced Motion Override ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Selection Color — Fun! ── */
::selection {
  background: var(--color-fun-yellow-light);
  color: var(--color-text-primary);
}

/* ── Scrollbar Styling — Colorful! ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary) 100%);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* ── Toast Notification ── */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, #00B396 100%);
  color: white;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 24px rgba(45, 27, 105, 0.25);
  z-index: var(--z-toast);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}

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