/* ============================================
   ANDREA CHAISSON — GLOBAL DESIGN SYSTEM
   Calgary's #1 Weight Loss Specialist for Women
   ============================================ */

/* ---------- GOOGLE FONTS ---------- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Roboto:wght@400;500;700;900&display=swap');

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  /* Colors */
  --clr-primary:   #0B0B0B;
  --clr-secondary: #FFFFFF;
  --clr-accent:    #FF2E63;
  --clr-accent-dark: #E0264F;
  --clr-accent-light: #FF5A7E;
  --clr-neutral:   #F3F3F3;
  --clr-grey-200:  #E8E8E8;
  --clr-grey-400:  #B0B0B0;
  --clr-grey-600:  #6B6B6B;
  --clr-grey-800:  #2A2A2A;
  --clr-overlay:   rgba(11,11,11,0.70);

  /* Typography */
  --ff-heading: 'Roboto', sans-serif;
  --ff-body:    'Montserrat', sans-serif;

  --fw-light:   300;
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semi:    600;
  --fw-bold:    700;
  --fw-black:   900;

  /* Fluid type scale */
  --fs-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --fs-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --fs-base: clamp(1rem, 0.9rem + 0.45vw, 1.125rem);
  --fs-lg:   clamp(1.125rem, 1rem + 0.55vw, 1.35rem);
  --fs-xl:   clamp(1.35rem, 1.1rem + 1vw, 1.75rem);
  --fs-2xl:  clamp(1.75rem, 1.3rem + 1.8vw, 2.5rem);
  --fs-3xl:  clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
  --fs-4xl:  clamp(2.75rem, 1.8rem + 4vw, 4.5rem);
  --fs-5xl:  clamp(3.25rem, 2rem + 5vw, 5.5rem);

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width:   1280px;
  --max-narrow:  900px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.18);
  --shadow-accent: 0 4px 25px rgba(255,46,99,0.35);

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-base: 350ms var(--ease-out);
  --transition-slow: 600ms var(--ease-out);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff-body);
  font-weight: var(--fw-regular);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--clr-primary);
  background-color: var(--clr-secondary);
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button { cursor: pointer; }

/* ---------- UTILITY CLASSES ---------- */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background-color: var(--clr-primary);
  color: var(--clr-secondary);
}

.section--grey {
  background-color: var(--clr-neutral);
}

.text-center { text-align: center; }
.text-accent { color: var(--clr-accent); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }

.section-label {
  display: inline-block;
  font-family: var(--ff-body);
  font-weight: var(--fw-semi);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
}

.section-heading {
  margin-bottom: var(--space-md);
}

.section-sub {
  font-size: var(--fs-lg);
  color: var(--clr-grey-600);
  max-width: 640px;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
}

.section--dark .section-sub {
  color: var(--clr-grey-400);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--ff-body);
  font-weight: var(--fw-semi);
  font-size: var(--fs-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1rem 2.2rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

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

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-secondary);
  box-shadow: var(--shadow-accent);
}

.btn--primary:hover {
  background: var(--clr-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(255,46,99,0.45);
}

.btn--primary:active {
  transform: translateY(0);
}

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

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

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

.btn--outline-dark:hover {
  background: var(--clr-primary);
  color: var(--clr-secondary);
  transform: translateY(-2px);
}

.btn--small {
  padding: 0.7rem 1.6rem;
  font-size: var(--fs-xs);
}

.btn--large {
  padding: 1.15rem 2.8rem;
  font-size: var(--fs-base);
}

/* Arrow icon in buttons */
.btn .arrow {
  transition: transform var(--transition-fast);
}
.btn:hover .arrow {
  transform: translateX(4px);
}

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background: rgba(11,11,11,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.8rem 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.logo {
  font-family: var(--ff-heading);
  font-weight: var(--fw-black);
  font-size: var(--fs-xl);
  color: var(--clr-secondary);
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--clr-accent);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.nav-link {
  font-family: var(--ff-body);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-secondary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-cta {
  margin-left: 1rem;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--clr-secondary);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--clr-primary);
  color: rgba(255,255,255,0.7);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-md);
  display: block;
}

.footer-brand p {
  font-size: var(--fs-sm);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 300px;
}

.footer-socials {
  display: flex;
  gap: 0.8rem;
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  transition: all var(--transition-base);
}

.footer-socials a:hover {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: var(--clr-secondary);
  transform: translateY(-3px);
}

.footer-col h4 {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-base);
  color: var(--clr-secondary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--clr-accent);
  padding-left: 4px;
}

.footer-cta-box {
  background: var(--clr-grey-800);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--clr-accent);
}

.footer-cta-box h4 {
  margin-bottom: var(--space-xs);
}

.footer-cta-box p {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-md);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: var(--fs-xs);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  font-size: var(--fs-xs);
}

.footer-bottom-links a:hover {
  color: var(--clr-accent);
}

/* ---------- SCROLL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children .reveal:nth-child(1) { transition-delay: 0s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.2s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.3s; }
.stagger-children .reveal:nth-child(5) { transition-delay: 0.4s; }
.stagger-children .reveal:nth-child(6) { transition-delay: 0.5s; }

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: var(--clr-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 900;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 30px rgba(255,46,99,0.5);
}

/* ---------- RESPONSIVE — TABLET & BELOW ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl) var(--space-lg);
  }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 0; right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: rgba(11,11,11,0.98);
    backdrop-filter: blur(16px);
    padding: 6rem 2rem 2rem;
    transition: right var(--transition-base);
    z-index: 999;
  }

  .main-nav.open { right: 0; }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .nav-link {
    font-size: var(--fs-lg);
  }

  .header-cta {
    margin-left: 0;
    margin-top: 1rem;
  }

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

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

  .section {
    padding: var(--space-2xl) 0;
  }
}

/* Mobile overlay when menu is open */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 998;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ---------- PAGE TRANSITION ---------- */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--clr-primary);
  z-index: 9999;
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}