/* ===================================
   PREMIUM SALON WEBSITE - DESIGN SYSTEM
   =================================== */

/* === CSS CUSTOM PROPERTIES === */
:root {
  /* Luxury Color Palette */
  --color-primary: #D4A574;        /* Warm gold */
  --color-primary-light: #E8C9A8;  /* Light beige */
  --color-primary-dark: #B8865A;   /* Deep gold */
  
  --color-accent: #C89B9B;         /* Soft blush */
  --color-accent-light: #E5D0D0;   /* Light blush */
  
  --color-neutral-100: #FAFAF8;    /* Off-white */
  --color-neutral-200: #F5F3F0;    /* Cream */
  --color-neutral-300: #E8E6E3;    /* Light beige */
  --color-neutral-400: #C8C6C3;    /* Medium gray */
  --color-neutral-700: #5A5856;    /* Charcoal */
  --color-neutral-900: #2C2A28;    /* Deep charcoal */
  
  /* Typography */
  --font-primary: 'Cormorant Garamond', serif;
  --font-secondary: 'Montserrat', sans-serif;
  
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.5rem;       /* 24px */
  --font-size-2xl: 2rem;        /* 32px */
  --font-size-3xl: 2.5rem;      /* 40px */
  --font-size-4xl: 3.5rem;      /* 56px */
  --font-size-5xl: 4.5rem;      /* 72px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing System */
  --space-xs: 0.5rem;      /* 8px */
  --space-sm: 1rem;        /* 16px */
  --space-md: 1.5rem;      /* 24px */
  --space-lg: 2rem;        /* 32px */
  --space-xl: 3rem;        /* 48px */
  --space-2xl: 4rem;       /* 64px */
  --space-3xl: 6rem;       /* 96px */
  --space-4xl: 8rem;       /* 128px */
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-lg);
  --section-padding: var(--space-3xl);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(44, 42, 40, 0.08);
  --shadow-md: 0 4px 16px rgba(44, 42, 40, 0.12);
  --shadow-lg: 0 8px 32px rgba(44, 42, 40, 0.16);
  
  /* Transitions */
  --transition-fast: 200ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-tooltip: 500;
}

/* === RESET & BASE STYLES === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-neutral-900);
  background-color: var(--color-neutral-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

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

ul, ol {
  list-style: none;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-neutral-700);
  line-height: var(--line-height-relaxed);
}

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

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* === LAYOUT === */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section--alt {
  background-color: var(--color-neutral-200);
}

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

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.flex {
  display: flex;
  gap: var(--space-md);
}

.flex--center {
  align-items: center;
  justify-content: center;
}

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

/* === NAVIGATION === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.navbar.hidden {
  transform: translateY(-100%);
}

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.navbar__logo {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-dark);
  letter-spacing: 0.05em;
}

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

.navbar__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-neutral-700);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-base);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-primary-dark);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
}

.navbar__toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-neutral-900);
  transition: all var(--transition-base);
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
  border: 2px solid transparent;
}

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

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

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}

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

.btn--large {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--font-size-base);
}

/* === CARDS === */
.card {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  height: 100%;
}

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

.card__image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.card__description {
  color: var(--color-neutral-700);
  margin-bottom: var(--space-md);
}

.card__price {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-dark);
}

/* === FORMS === */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-neutral-700);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  color: var(--color-neutral-900);
  background-color: white;
  border: 2px solid var(--color-neutral-300);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* === FOOTER === */
.footer {
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-300);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__section h4 {
  color: white;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.footer__link {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-neutral-400);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-primary-light);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-neutral-700);
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 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 scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animation Utility Classes */
.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.8s ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.8s ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn 0.6s ease-out forwards;
}

/* Staggered Animation Delays */
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }
.animate-delay-6 { animation-delay: 0.6s; }

/* Initial state for scroll-triggered animations */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 1024px) {
  :root {
    --font-size-4xl: 3rem;
    --font-size-3xl: 2rem;
    --section-padding: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --section-padding: var(--space-xl);
    --container-padding: var(--space-md);
  }
  
  .navbar__menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-neutral-100);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform var(--transition-base);
    gap: var(--space-md);
  }
  
  .navbar__menu.active {
    transform: translateY(0);
  }
  
  .navbar__toggle {
    display: flex;
  }
  
  .navbar__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }
  
  .navbar__toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .navbar__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }
  
  .btn {
    width: 100%;
  }
}