:root {
  --color-black: #000;
  --color-white: #fff;
  --color-gray: #888;
  --font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-hero: clamp(3rem, 11vw, 9rem);
  --font-size-body: clamp(1rem, 2vw, 1.25rem);
  --font-size-label: 0.875rem;
  --line-height-hero: 0.95;
  --spacing-page: clamp(2rem, 2vw, 6rem);
  --transition-speed: 0.5s;
  --transition-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  overflow-x: hidden;
  background: var(--color-black);
  color: var(--color-white);
}

.page {
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-page);
}

.page-bg {
  position: absolute;
  inset: 0;
  background: url("bg.png") no-repeat center center;
  background-size: cover;
  background-attachment: fixed;
  z-index: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem var(--spacing-page);
}

.site-name {
  font-size: 32px;
  font-weight: bold;
  color: var(--color-white);
}

.hero-text {
  position: relative;
  z-index: 1;
  font-size: var(--font-size-hero);
  font-weight: 900;
  line-height: var(--line-height-hero);
  letter-spacing: -0.03em;
}

.contact-trigger {
  cursor: pointer;
  background: transparent;
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-size-label);
  color: var(--color-white);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.contact-trigger:hover {
  color: cyan;
}

.about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-page);
  background: var(--color-black);
}

.about-text {
  max-width: 48rem;
  font-size: clamp(1.25rem, 3vw, 2rem);
  line-height: 1.5;
  color: var(--color-gray);
}

.contact-overlay {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background: var(--color-black);
  z-index: 20;
  transform: translateY(100%);
  transition: transform var(--transition-speed) var(--transition-ease);
  display: flex;
  align-items: center;
  padding: var(--spacing-page);
}

.contact-overlay.is-open {
  transform: translateY(0);
}

.overlay-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: transparent;
  border: none;
  color: var(--color-gray);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease;
}

.overlay-close:hover {
  color: var(--color-white);
}

.contact-form {
  width: 100%;
  max-width: 36rem;
}

.form-field {
  margin-bottom: 2rem;
}

.form-field:last-of-type {
  margin-bottom: 2.5rem;
}

.form-label {
  display: block;
  font-size: var(--font-size-label);
  color: var(--color-gray);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  padding: 0.75rem 0;
  outline: none;
  transition: border-color 0.2s ease;
}

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

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.2);
}

.form-textarea {
  resize: none;
  height: 5rem;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.form-submit {
  background: var(--color-white);
  color: var(--color-black);
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2.5rem;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.form-submit:hover {
  opacity: 0.8;
}

.form-success {
  display: none;
  color: var(--color-white);
  font-size: var(--font-size-hero);
  font-weight: 900;
  line-height: var(--line-height-hero);
  letter-spacing: -0.03em;
}

.contact-form.is-sent .form-field,
.contact-form.is-sent .form-actions {
  display: none;
}

.contact-form.is-sent .form-success {
  display: block;
}

@media (max-width: 600px) {
  .page {
    padding: 1.5rem;
  }

  .contact-overlay {
    padding: 1.5rem;
  }
}