/* ========================================
   HARMONY BUILDWORKS Design System
   Engineers & Architects Portfolio
   ======================================== */

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

html {
  scroll-behavior: auto;
  /* Lenis handles scrolling */
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-charcoal);
  color: var(--color-off-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Hide scrollbar but keep scroll functionality */
  scrollbar-width: none;
  /* Firefox */
  -ms-overflow-style: none;
  /* IE/Edge */
}

body::-webkit-scrollbar {
  display: none;
  /* Chrome, Safari, Opera */
}

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* Colors - Navy & Mint (from Harmony Buildworks logo) */
  --color-charcoal: #0F1A2B;
  --color-charcoal-light: #152238;
  --color-charcoal-medium: #1C2D45;
  --color-off-white: #F0F5F3;
  --color-taupe: #A3CFC0;
  --color-accent-dark: #1B2A4A;
  --color-grey: #7A8A96;
  --color-grey-dark: #2A3A50;
  --color-warm-beige: #C4A88A;

  /* Typography Scale */
  --font-display: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', sans-serif;

  --text-hero: clamp(4rem, 12vw, 14rem);
  --text-display: clamp(3rem, 8vw, 8rem);
  --text-heading-1: clamp(2.5rem, 5vw, 5rem);
  --text-heading-2: clamp(1.75rem, 3vw, 3rem);
  --text-heading-3: clamp(1.25rem, 2vw, 1.75rem);
  --text-body: 1rem;
  --text-body-lg: 1.125rem;
  --text-small: 0.875rem;
  --text-micro: 0.75rem;

  /* Spacing - 8px base */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 2.5rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-10: 5rem;
  --space-12: 6rem;
  --space-16: 8rem;
  --space-20: 10rem;
  --space-24: 12rem;

  /* Layout */
  --container-max: 1400px;
  --container-wide: 1600px;
  --nav-height: 80px;

  /* Animation */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out-cubic: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.3s;
  --duration-normal: 0.6s;
  --duration-slow: 1s;
  --duration-slower: 1.5s;

  /* Effects */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-strong: 0 16px 60px rgba(0, 0, 0, 0.5);
  --glow-taupe: 0 0 60px rgba(163, 207, 192, 0.3);
}

/* ---------- TYPOGRAPHY ---------- */
@font-face {
  font-family: 'Satoshi';
  src: url('https://api.fontshare.com/v2/css?f[]=satoshi@700,900&display=swap');
  font-weight: 700 900;
  font-display: swap;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-hero {
  font-size: var(--text-hero);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.text-display {
  font-size: var(--text-display);
  font-weight: 700;
}

.text-heading-1 {
  font-size: var(--text-heading-1);
}

.text-heading-2 {
  font-size: var(--text-heading-2);
}

.text-heading-3 {
  font-size: var(--text-heading-3);
}

.text-body {
  font-size: var(--text-body);
}

.text-body-lg {
  font-size: var(--text-body-lg);
}

.text-small {
  font-size: var(--text-small);
}

.text-micro {
  font-size: var(--text-micro);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ---------- UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ---------- SECTION BASE ---------- */
.section {
  min-height: 100vh;
  width: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.section-padding {
  padding: var(--space-16) 0;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-off-white);
  border: 1px solid var(--color-grey-dark);
}

.btn-outline:hover {
  border-color: var(--color-taupe);
  color: var(--color-taupe);
}

.btn-ghost {
  background: transparent;
  color: var(--color-off-white);
  padding: var(--space-1) 0;
  position: relative;
}

.btn-ghost::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-taupe);
  transition: width var(--duration-fast) var(--ease-out-quart);
}

.btn-ghost:hover::after {
  width: 100%;
}

/* ---------- FORM ELEMENTS ---------- */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-micro);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-grey);
  margin-bottom: var(--space-1);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-2) 0;
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-off-white);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-grey-dark);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out-quart);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-taupe);
}

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

/* ---------- ANIMATIONS BASE ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
    transform var(--duration-slow) var(--ease-out-expo);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade-up"] {
  transform: translateY(60px);
}

[data-animate="fade-in"] {
  transform: translateY(0);
}

[data-animate="scale-up"] {
  transform: scale(0.95);
}

[data-animate="scale-up"].is-visible {
  transform: scale(1);
}

/* ---------- SCROLL INDICATOR ---------- */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-grey);
}

.scroll-indicator__line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-grey), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-indicator__line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-taupe);
  animation: scroll-line 2s infinite;
}

@keyframes scroll-line {
  0% {
    top: -100%;
  }

  50%,
  100% {
    top: 100%;
  }
}

/* ---------- CURSOR (Custom) ---------- */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-off-white);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s var(--ease-out-quart),
    width 0.3s var(--ease-out-quart),
    height 0.3s var(--ease-out-quart),
    background 0.3s var(--ease-out-quart);
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
}

.cursor.is-hovering {
  width: 60px;
  height: 60px;
  background: rgba(163, 207, 192, 0.2);
  border-color: var(--color-taupe);
}

.cursor.is-active {
  transform: translate(-50%, -50%) scale(0.8);
}

@media (hover: none),
(max-width: 768px) {
  .cursor {
    display: none !important;
  }

  body {
    cursor: auto !important;
  }
}

/* ---------- SMOOTH PAGE ENTRANCE ---------- */
body.is-loading {
  opacity: 0;
}

body.is-loaded {
  opacity: 1;
  transition: opacity 0.8s var(--ease-out-expo);
}

body.is-loaded .nav {
  animation: pageEntranceSlideDown 0.9s var(--ease-out-expo) 0.1s both;
}

body.is-loaded .hero__content {
  animation: pageEntranceFadeUp 1s var(--ease-out-expo) 0.3s both;
}

body.is-loaded .hero__video-container {
  animation: pageEntranceScale 1.2s var(--ease-out-expo) 0.15s both;
}

@keyframes pageEntranceFadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pageEntranceSlideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pageEntranceScale {
  from {
    opacity: 0;
    transform: scale(1.03);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ---------- PAGE TRANSITION ---------- */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-charcoal);
  z-index: 9998;
  transform: translateY(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.page-transition.is-active {
  transform: translateY(0);
}

/* ---------- MEDIA QUERIES ---------- */
@media (max-width: 1024px) {
  :root {
    --nav-height: 70px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --text-hero: clamp(2.5rem, 10vw, 5rem);
    --text-display: clamp(1.75rem, 6vw, 3rem);
    --text-heading-1: clamp(1.5rem, 5vw, 2.5rem);
    --text-heading-2: clamp(1.25rem, 4vw, 1.75rem);
    --text-heading-3: clamp(1rem, 3vw, 1.25rem);
    --text-body-lg: 1rem;
    --text-body: 0.9375rem;
    --text-small: 0.8125rem;
    --text-micro: 0.6875rem;
    --space-12: 4rem;
    --space-16: 5rem;
    --space-20: 6rem;
    --space-24: 7rem;
  }

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

  .section {
    min-height: auto;
    padding: var(--space-8) 0;
  }

  /* Ensure data-animate elements are visible on mobile */
  [data-animate] {
    transform: translateY(20px);
  }

  [data-animate="fade-up"] {
    transform: translateY(30px);
  }

  /* Form elements */
  .form-group {
    margin-bottom: var(--space-3);
  }

  .form-input,
  .form-textarea {
    font-size: 16px;
    /* Prevents iOS zoom */
    padding: var(--space-2) 0;
  }

  .form-textarea {
    min-height: 80px;
  }

  .btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-micro);
    width: auto;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-2);
  }

  :root {
    --text-display: clamp(1.5rem, 7vw, 2.5rem);
    --text-heading-1: clamp(1.25rem, 6vw, 2rem);
  }
}

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}