/* ============================================
   Smile Karisma — Design System & Global Styles
   ============================================ */

/* ---- CSS Custom Properties ---- */
:root {
  /* Colors */
  --primary: #E85B9A;
  --primary-dark: #c7427f;
  --primary-light: #F08BC2;
  --primary-lighter: #fce4f1;
  --primary-50: rgba(232, 91, 154, 0.05);
  --primary-100: rgba(232, 91, 154, 0.1);

  --accent: #5FC9C4;
  --accent-dark: #3aada8;
  --accent-light: #9BDAD9;
  --accent-glow: rgba(95, 201, 196, 0.25);

  --bg: #FFFFFF;
  --bg-alt: #F6FAFB;
  --bg-dark: #0C1B2A;
  --bg-darker: #071421;

  --surface: #FFFFFF;
  --surface-glass: rgba(255, 255, 255, 0.7);
  --surface-dark: rgba(255, 255, 255, 0.05);

  --text: #1A1A2E;
  --text-secondary: #5A6578;
  --text-muted: #8E99A9;
  --text-on-dark: #E8ECF1;
  --text-on-primary: #FFFFFF;

  --border: #E5E9EF;
  --border-light: #F0F3F6;

  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Spacing */
  --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;

  /* Borders & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 30px rgba(31, 138, 167, 0.2);
  --shadow-glow-accent: 0 0 30px rgba(235, 107, 176, 0.2);
  --shadow-card-hover: 0 16px 40px rgba(31, 138, 167, 0.15), 0 4px 12px rgba(0,0,0,0.06);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 350ms;
  --duration-slow: 500ms;

  /* Layout */
  --header-height: 80px;
  --container-max: 1280px;
  --container-wide: 1440px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--primary-dark);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: var(--text-5xl); letter-spacing: -0.02em; }
h2 { font-size: var(--text-4xl); letter-spacing: -0.01em; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

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

ul, ol { list-style: none; }

.text-center { text-align: center; }

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding: var(--space-24) 0;
}

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

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #fff;
}

/* ---- Section Headers ---- */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-16);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--primary-100);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: 1.8;
}

.section-dark .section-badge {
  background: rgba(155, 218, 217, 0.15);
  color: var(--primary-light);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(31, 138, 167, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(31, 138, 167, 0.4);
  color: #fff;
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(235, 107, 176, 0.4);
  color: #fff;
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--primary-dark);
}

.btn-lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* Add to cart button states */
.btn.adding {
  pointer-events: none;
  transform: scale(0.95);
}

.btn.added {
  background: linear-gradient(135deg, var(--success), #16a34a) !important;
  pointer-events: none;
}

/* ---- Header / Navigation ---- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-4) 0;
  transition: all var(--duration-normal) var(--ease-out);
  background: transparent;
}

header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  padding: var(--space-3) 0;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 101;
}

.nav-logo img {
  height: 46px;
  width: auto;
  transition: transform var(--duration-fast);
}

.nav-logo:hover img {
  transform: scale(1.03);
}

.nav-logo .logo-text {
  display: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  position: relative;
  padding: var(--space-2) 0;
}

header.scrolled .nav-links a {
  color: var(--text-secondary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-links a:hover {
  color: #fff;
}

header.scrolled .nav-links a:hover {
  color: var(--primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  transition: all var(--duration-fast);
}

header.scrolled .cart-btn {
  background: var(--primary-100);
  color: var(--primary);
}

.cart-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

header.scrolled .cart-btn:hover {
  background: var(--primary);
  color: #fff;
}

#cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-dark);
}

header.scrolled #cart-count {
  border-color: #fff;
}

#cart-count.pop {
  animation: popIn 0.4s var(--ease-spring);
}

@keyframes popIn {
  0% { transform: scale(0); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 6px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-out);
}

header.scrolled .nav-toggle span {
  background: var(--text);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ---- Product Card ---- */
.product-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-out);
  border: 1px solid var(--border-light);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.product-card-image {
  position: relative;
  aspect-ratio: 1;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-6);
}

.product-card-image img {
  width: 80%;
  height: 80%;
  object-fit: contain;
  transition: transform var(--duration-slow) var(--ease-out);
}

.product-card:hover .product-card-image img {
  transform: scale(1.08);
}

.product-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--accent);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  z-index: 2;
}

.product-badge.premium {
  background: linear-gradient(135deg, #1a1a2e, #2d2d44);
}

.product-card-quick-add {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.product-card:hover .product-card-quick-add {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.product-card-body {
  padding: var(--space-5) var(--space-5) var(--space-6);
}

.product-card-brand {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-1);
}

.product-card-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-1);
  line-height: 1.3;
}

.product-card-variant {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.product-card-rating {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.star { color: #FBBF24; font-size: 14px; }
.star.empty { color: #E5E7EB; }
.star.half {
  background: linear-gradient(90deg, #FBBF24 50%, #E5E7EB 50%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.product-card-rating span:last-child {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.product-card-price {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.price-current {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text);
}

.price-original {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: line-through;
}

/* ---- Cart Toast ---- */
.cart-toast {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-dark);
  color: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 10000;
  transform: translateY(120%);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.cart-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.cart-toast.hide {
  transform: translateY(120%);
  opacity: 0;
}

.cart-toast-icon {
  width: 36px;
  height: 36px;
  background: var(--success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cart-toast-content {
  display: flex;
  flex-direction: column;
}

.cart-toast-title {
  font-weight: 700;
  font-size: var(--text-sm);
}

.cart-toast-product {
  font-size: var(--text-xs);
  color: var(--text-on-dark);
  opacity: 0.7;
}

/* ---- Footer ---- */
footer {
  position: relative;
  background: #050d16;
  color: var(--text-on-dark);
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), var(--primary), transparent);
  z-index: 2;
}

.footer-bg-overlay {
  position: absolute;
  inset: 0;
  background: url('../assets/images/footer-bg.jpg') center/cover no-repeat;
  opacity: 0.15;
  z-index: 0;
}

.footer-content {
  position: relative;
  z-index: 1;
  padding-top: var(--space-20);
  padding-bottom: var(--space-16);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: var(--space-12);
  align-items: start;
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-top: var(--space-4);
  max-width: 320px;
}

.footer-brand .nav-logo {
  margin-bottom: var(--space-2);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--duration-fast);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(31, 138, 167, 0.35);
}

.footer-column h4 {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-6);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-column a {
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--text-sm);
  transition: all var(--duration-fast);
}

.footer-column a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

/* Contact column with icons */
.footer-contact ul {
  gap: var(--space-4);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.footer-contact li svg {
  flex-shrink: 0;
  color: var(--primary);
}

.footer-contact-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.5);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--text-sm);
  line-height: 1.5;
  transition: all var(--duration-fast);
}

.footer-contact a:hover {
  color: var(--primary-light);
  padding-left: 0;
}

/* Footer Bottom — Solid black bar */
.footer-bottom {
  background: #000;
  padding: var(--space-5) 0;
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.35);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom-links a:hover {
  color: rgba(255, 255, 255, 0.7);
}

/* ---- Scroll Animations ---- */
.animate-on-scroll {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.animate-on-scroll[data-animation="fade-up"],
.animate-on-scroll:not([data-animation]) {
  transform: translateY(40px);
}

.animate-on-scroll[data-animation="fade-left"] {
  transform: translateX(-40px);
}

.animate-on-scroll[data-animation="fade-right"] {
  transform: translateX(40px);
}

.animate-on-scroll[data-animation="scale-in"] {
  transform: scale(0.9);
}

.animate-on-scroll[data-animation="fade-in"] {
  transform: none;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: none;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }

  .section { padding: var(--space-16) 0; }
  .section-header { margin-bottom: var(--space-12); }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

/* Show Add to Cart immediately on touch devices (no hover) */
@media (hover: none) {
  .product-card-quick-add {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }

  .container { padding-left: var(--space-4); padding-right: var(--space-4); }
  .section { padding: var(--space-12) 0; }
  .section-header { margin-bottom: var(--space-8); }

  /* Mobile Nav */
  .nav-toggle {
    display: flex;
  }

  #nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 380px;
    height: 100vh;
    background: var(--bg-dark);
    padding: calc(var(--header-height) + var(--space-8)) var(--space-8) var(--space-8);
    transition: right var(--duration-normal) var(--ease-out);
    z-index: 100;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
  }

  #nav-menu.active {
    right: 0;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .nav-links a {
    color: rgba(255, 255, 255, 0.8) !important;
    font-size: var(--text-lg);
    padding: var(--space-4) 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-links a:hover {
    color: var(--primary-light) !important;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cart-toast {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }
}

@media (max-width: 480px) {
  h1 { font-size: var(--text-2xl); }

  .btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
  }
}