/*!
 * Yoshino Landscaping & Civil Engineering
 * Modern CSS Styles - Optimized for Performance
 * Last Updated: August 2025
 */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design System)
   ========================================================================== */

:root {
  /* Primary Color Palette - Green Theme */
  --color-primary: #008037;
  --color-primary-50: #f0fdf4;
  --color-primary-100: #dcfce7;
  --color-primary-200: #bbf7d0;
  --color-primary-300: #86efac;
  --color-primary-400: #4ade80;
  --color-primary-500: #22c55e;
  --color-primary-600: #16a34a;
  --color-primary-700: #15803d;
  --color-primary-800: #166534;
  --color-primary-900: #14532d;
  --color-primary-950: #052e16;

  /* Neutral Palette */
  --color-neutral-50: #fafafa;
  --color-neutral-100: #f4f4f5;
  --color-neutral-200: #e4e4e7;
  --color-neutral-300: #d4d4d8;
  --color-neutral-400: #a1a1aa;
  --color-neutral-500: #71717a;
  --color-neutral-600: #52525b;
  --color-neutral-700: #3f3f46;
  --color-neutral-800: #27272a;
  --color-neutral-900: #18181b;

  /* Semantic Colors */
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-text: #18181b;
  --color-text-muted: #71717a;
  --color-border: #e4e4e7;
  --color-border-strong: #d4d4d8;

  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Line Heights */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;

  /* Spacing Scale (8pt grid) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius: 0.375rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

  /* Container */
  --container: 1200px;

  /* Transitions */
  --transition-all: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-colors: color 150ms cubic-bezier(0.4, 0, 0.2, 1), background-color 150ms cubic-bezier(0.4, 0, 0.2, 1), border-color 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-opacity: opacity 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-shadow: box-shadow 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-transform: transform 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   MODERN CSS RESET & BASE STYLES
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  height: 100%;
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  padding-top: 72px;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-6xl));
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
}

h2 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  font-weight: 600;
  letter-spacing: var(--letter-spacing-tight);
}

.slide-title {
  color: #ffffff;
}

h3 {
  font-size: clamp(var(--font-size-xl), 2.5vw, var(--font-size-2xl));
  font-weight: 600;
  line-height: var(--line-height-snug);
}

p {
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   LINKS & MEDIA
   ========================================================================== */

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   FORM ELEMENTS & INTERACTIONS
   ========================================================================== */

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.columns {
  display: grid;
  gap: var(--space-8);
}

.columns.two {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ==========================================================================
   SECTION STYLES
   ========================================================================== */

.section {
  padding: var(--space-20) 0;
}

.section.alt {
  background: var(--color-surface);
}

.section-title {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  font-weight: 600;
  line-height: var(--line-height-tight);
  text-align: center;
  margin-bottom: var(--space-12);
}

/* ==========================================================================
   BUTTON COMPONENTS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-all);
}

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

.btn.btn-primary:hover {
  background: #3dce72;
  color: #000000;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

/* ==========================================================================
   HEADER COMPONENT
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.site-header.is-visible {
  transform: translateY(0);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: var(--space-4);
}

.logo img {
  height: 48px;
  width: auto;
  transition: var(--transition-transform);
}

.logo:hover img {
  transform: scale(1.02);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: var(--space-2);
  font-size: var(--font-size-lg);
  cursor: pointer;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition-all);
}

.nav-list a:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  text-decoration: none;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-list {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    padding: var(--space-6);
    gap: var(--space-3);
    transform: translateY(-20px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-list a {
    width: 100%;
    justify-content: center;
    padding: var(--space-4);
    font-size: var(--font-size-lg);
  }
}

/* ==========================================================================
   HERO SECTION & SLIDER
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
}

.slider {
  position: relative;
  overflow: hidden;
  background: var(--color-neutral-900);
}

.slider.loading {
  opacity: 0.7;
}

.slider.loaded {
  opacity: 1;
  transition: opacity 0.3s ease;
}

.slides {
  display: flex;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.slides:not(.transitioning) {
  will-change: auto;
}

.slide {
  position: relative;
  min-width: 100%;
}

.slide img {
  width: 100%;
  height: 70vh;
  object-fit: cover;
  filter: brightness(0.9) contrast(1.1);
  will-change: transform;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.6));
  z-index: 12;
}

.slide-overlay.light {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.4));
}

.slide-content {
  position: absolute;
  bottom: 10%;
  left: 0;
  right: 0;
  color: white;
  padding: 0 var(--space-6);
  z-index: 15;
}

.slide-content.dark {
  color: var(--color-neutral-800);
  text-shadow: 0 1px 3px rgba(255, 255, 255, 0.8);
}

.slide-content.align-left {
  text-align: left;
}

.slide-content.align-center {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.slide-content.align-right {
  text-align: right;
}

.slide-content h2 {
  margin: 0 0 var(--space-4);
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-5xl));
  font-weight: 700;
  line-height: var(--line-height-tight);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.slide-content p {
  margin: 0;
  font-size: clamp(var(--font-size-base), 2.5vw, var(--font-size-xl));
  line-height: var(--line-height-relaxed);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  opacity: 0.95;
  max-width: 600px;
}

/* Slider Controls */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: var(--font-size-xl);
  transition: var(--transition-all);
  z-index: 20;
}

.slider-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-lg);
}

.slider-btn.prev {
  left: var(--space-4);
}

.slider-btn.next {
  right: var(--space-4);
}

.slider-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--space-6);
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  z-index: 20;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: var(--transition-all);
}

.slider-dot:hover {
  background: rgba(255, 255, 255, 0.6);
  transform: scale(1.2);
}

.slider-dot.active {
  background: white;
  border-color: white;
  transform: scale(1.3);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   REVIEW CARDS
   ========================================================================== */

.review-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-8);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.review-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-primary-400), var(--color-primary-600));
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.review-head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.review-head .avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid var(--color-primary-100);
}

.review-card .name {
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

.review-card .date {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.review-card .text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

/* ==========================================================================
   DATA TABLE
   ========================================================================== */

.table-responsive {
  overflow: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.data-table {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.data-table th {
  width: 30%;
  background: linear-gradient(135deg, var(--color-primary-50), var(--color-primary-100));
  color: var(--color-primary-800);
  text-align: left;
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.data-table td {
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height-relaxed);
}

.data-table tr:last-child th,
.data-table tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   TIMELINE
   ========================================================================== */

.timeline {
  list-style: none;
  margin: 0;
  padding: var(--space-8) 0;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: var(--space-6);
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-primary-200), var(--color-primary-400), var(--color-primary-200));
  border-radius: var(--radius-full);
}

.timeline li {
  position: relative;
  padding: var(--space-6) 0 var(--space-6) var(--space-16);
}

.timeline li::before {
  content: '';
  position: absolute;
  left: var(--space-4);
  top: calc(var(--space-6) + 4px);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--color-bg);
  box-shadow: var(--shadow-md);
  z-index: 2;
}

.timeline .time {
  display: inline-block;
  min-width: 160px;
  color: var(--color-primary-700);
  font-weight: 700;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-1);
}

.timeline .event {
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   CONTACT CTA
   ========================================================================== */

.contact-cta {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  color: white;
  position: relative;
  overflow: hidden;
}

.contact-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  align-items: center;
}

.contact-text .catch {
  display: block;
  font-weight: 700;
  font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-2xl));
  margin-bottom: var(--space-2);
}

.contact-text .tel {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: 700;
  text-decoration: none;
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  transition: var(--transition-all);
}

.contact-text .tel:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  text-decoration: none;
}

.contact-text .time {
  display: block;
  margin-top: var(--space-3);
  opacity: 0.8;
  font-size: var(--font-size-sm);
}

.contact-actions .btn {
  background: white;
  color: var(--color-primary-700);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

.contact-actions .btn:hover {
  background: var(--color-neutral-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background: linear-gradient(135deg, var(--color-neutral-900), var(--color-neutral-800));
  color: var(--color-neutral-300);
  position: relative;
}

.footer-widgets {
  padding: var(--space-20) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-12);
}

.footer-col h3 {
  margin: 0 0 var(--space-4);
  color: white;
  font-size: var(--font-size-lg);
  font-weight: 600;
  position: relative;
  padding-bottom: var(--space-2);
}

.footer-col h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--color-primary-400);
  border-radius: var(--radius-full);
}

.footer-col a {
  color: var(--color-primary-300);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-colors);
}

.footer-col a:hover {
  color: var(--color-primary-200);
  text-decoration: underline;
}

.profile-logo {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-xl);
  border: 3px solid var(--color-primary-200);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-all);
}

.profile-logo:hover {
  transform: scale(1.05);
  border-color: var(--color-primary-300);
}

.sns {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  flex-wrap: wrap;
}

.map-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 2px solid var(--color-neutral-700);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-all);
}

.map-wrap:hover {
  border-color: var(--color-primary-500);
  transform: translateY(-2px);
}

.copyright {
  padding: var(--space-6) 0;
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
}

/* ==========================================================================
   BACK TO TOP BUTTON
   ========================================================================== */

.back-to-top {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-all);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-lg);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: var(--shadow-xl);
  text-decoration: none;
}

/* ==========================================================================
   BANNER COMPONENTS
   ========================================================================== */

.banner {
  display: block;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-all);
}

.banner:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-xl);
  text-decoration: none;
}

.banner img {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
  .section {
    padding: var(--space-16) 0;
  }
  
  .section-title {
    margin-bottom: var(--space-8);
  }
  
  .slide img {
    height: 60vh;
  }
  
  .slide-content {
    bottom: 8%;
    padding: 0 var(--space-4);
  }
  
  .contact-inner {
    text-align: center;
    gap: var(--space-6);
  }
  
  .contact-actions {
    text-align: center;
  }
  
  .footer-widgets {
    padding: var(--space-16) 0;
  }
  
  .footer-grid {
    gap: var(--space-8);
  }
  
  .data-table th,
  .data-table td {
    padding: var(--space-3) var(--space-4);
  }
  
  .timeline li {
    padding: var(--space-4) 0 var(--space-4) var(--space-12);
  }
  
  .timeline li::before {
    left: calc(var(--space-4) - 6px);
    width: 12px;
    height: 12px;
    border-width: 3px;
  }
  
  .timeline .time {
    display: block;
    min-width: auto;
    margin-bottom: var(--space-2);
  }
  
  .review-card {
    padding: var(--space-6);
  }
  
  .review-head .avatar {
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 480px) {
  .slide img {
    height: 50vh;
  }
  
  .slider-btn {
    width: 44px;
    height: 44px;
    font-size: var(--font-size-lg);
  }
  
  .slider-dot {
    width: 10px;
    height: 10px;
  }
  
  .back-to-top {
    width: 44px;
    height: 44px;
    right: var(--space-3);
    bottom: var(--space-3);
    font-size: var(--font-size-base);
  }
}

/* ==========================================================================
   ANIMATIONS & KEYFRAMES
   ========================================================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Scroll Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-animated {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   ACCESSIBILITY & REDUCED MOTION
   ========================================================================== */

@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;
  }
}