/* ========================================
   Calculator for Magicians — Landing Page
   Apple-minimalist style
   ======================================== */

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

:root {
  --black: #000000;
  --white: #FFFFFF;
  --orange: #F97316;
  --orange-hover: #EA580C;
  --gray-900: #1F2937;
  --gray-800: #374151;
  --gray-700: #4B5563;
  --gray-500: #6B7280;
  --gray-400: #9CA3AF;
  --gray-300: #D1D5DB;
  --gray-100: #F3F4F6;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent {
  color: var(--orange);
}

/* ---------- Fade-in animation ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.nav__logo span {
  color: var(--orange);
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-400);
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--white);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-align: center;
}

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

.btn--primary:hover {
  background: var(--orange-hover);
  transform: scale(1.03);
}

.btn--large {
  padding: 18px 48px;
  font-size: 18px;
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--gray-700);
  margin-top: 12px;
}

.btn--outline:hover {
  border-color: var(--orange);
  color: var(--orange);
  transform: scale(1.03);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__label {
  font-size: 14px;
  font-weight: 500;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 18px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}

/* ---------- Phone Mockup ---------- */
.hero__visual {
  display: flex;
  justify-content: center;
}

.phone {
  width: 280px;
  background: #1a1a1a;
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    0 0 0 2px #333,
    0 20px 60px rgba(249, 115, 22, 0.15),
    0 0 120px rgba(249, 115, 22, 0.05);
  position: relative;
}

.phone__notch {
  width: 100px;
  height: 28px;
  background: #1a1a1a;
  border-radius: 0 0 16px 16px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.phone__screen {
  background: var(--black);
  border-radius: 28px;
  padding: 16px;
  margin-top: -14px;
}

/* ---------- Calculator Mockup ---------- */
.calc {
  background: var(--black);
}

.calc__display {
  font-size: 56px;
  font-weight: 300;
  text-align: right;
  padding: 20px 16px 16px;
  color: var(--white);
  min-height: 90px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.calc__buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.calc__btn {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: none;
  font-size: 20px;
  font-weight: 400;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #333;
  color: var(--white);
  transition: all 0.15s ease;
}

.calc__btn:hover {
  background: #444;
}

.calc__btn--secondary {
  background: #A3A3A3;
  color: #000;
}

.calc__btn--operator {
  background: var(--orange);
}

.calc__btn--zero {
  grid-column: span 2;
  border-radius: 40px;
  aspect-ratio: auto;
  height: 100%;
}

/* ---------- Sections Common ---------- */
section {
  padding: 120px 0;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  text-align: center;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--gray-400);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 64px;
  line-height: 1.7;
}

/* ---------- Features ---------- */
.features {
  background: var(--black);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: rgba(249, 115, 22, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.18), rgba(249, 115, 22, 0.06));
  color: var(--orange);
  margin-bottom: 20px;
}

.feature-card__icon svg {
  width: 28px;
  height: 28px;
}

.feature-card__title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card__desc {
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-card__desc strong {
  color: var(--orange);
  font-weight: 600;
}

.feature-card__tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(249, 115, 22, 0.12);
  color: var(--orange);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

/* ---------- Screenshots ---------- */
.shots {
  background: var(--black);
  padding: 120px 0;
}

.shots__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.shots__item {
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.shots__item:hover {
  border-color: rgba(249, 115, 22, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.shots__item img {
  width: 100%;
  max-width: 220px;
  border-radius: var(--radius);
  display: block;
}

/* ---------- How It Works ---------- */
.how {
  background: linear-gradient(180deg, var(--black) 0%, #0a0a0a 100%);
}

.how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.step {
  text-align: center;
  padding: 32px 24px;
}

.step__number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--white);
  font-size: 28px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.step__title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.step__desc {
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.7;
}

/* ---------- Audience ---------- */
.audience {
  background: #0a0a0a;
  padding: 100px 0;
}

.audience__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 48px auto 0;
}

.audience__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 16px;
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}

.audience__item:hover {
  border-color: rgba(249, 115, 22, 0.3);
  transform: translateY(-2px);
}

.audience__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.18), rgba(249, 115, 22, 0.06));
  color: var(--orange);
}

.audience__icon svg {
  width: 26px;
  height: 26px;
}

/* ---------- Buy ---------- */
.buy {
  background: var(--black);
  padding: 120px 0;
}

.buy__card {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
  padding: 64px 48px;
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.buy__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
}

.buy__label {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.buy__free {
  font-size: 17px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 32px;
}

.buy__meta {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 24px;
}

/* ---------- FAQ ---------- */
.faq {
  background: #0a0a0a;
  padding: 120px 0;
}

.faq__list {
  max-width: 640px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq__question {
  padding: 24px 0;
  font-size: 17px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--orange);
  transition: transform var(--transition);
}

details[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__question:hover {
  color: var(--orange);
}

.faq__answer {
  padding: 0 0 24px;
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.7;
}

/* ---------- Footer ---------- */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer__links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer__copy {
  font-size: 13px;
  color: var(--gray-500);
}

.footer__telegram {
  font-size: 14px;
  font-weight: 500;
  color: var(--orange);
  transition: opacity var(--transition);
}

.footer__telegram:hover {
  opacity: 0.8;
}

/* ---------- Responsive ---------- */

/* Tablet */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__visual {
    order: -1;
  }

  .phone {
    width: 240px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .shots__grid {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
  }

  .how__steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .audience__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

/* Mobile */
@media (max-width: 640px) {
  section {
    padding: 80px 0;
  }

  .nav__links {
    gap: 20px;
  }

  .nav__links a {
    font-size: 13px;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero__title {
    letter-spacing: -1px;
  }

  .hero__subtitle {
    font-size: 16px;
  }

  .btn {
    padding: 12px 28px;
    font-size: 15px;
  }

  .phone {
    width: 220px;
  }

  .calc__display {
    font-size: 42px;
    min-height: 70px;
  }

  .calc__btn {
    font-size: 16px;
  }

  .calc__row {
    gap: 8px;
  }

  .calc__buttons {
    gap: 8px;
  }

  .section-title {
    font-size: 28px;
  }

  .section-subtitle {
    font-size: 15px;
    margin-bottom: 48px;
  }

  .feature-card {
    padding: 32px 24px;
  }

  .buy__card {
    padding: 48px 24px;
  }

  .audience__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .audience__item {
    padding: 24px 12px;
    font-size: 13px;
  }

  .footer .container {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* Small mobile */
@media (max-width: 380px) {
  .nav__links {
    gap: 14px;
  }

  .phone {
    width: 200px;
  }

  .calc__display {
    font-size: 36px;
    min-height: 60px;
  }

  .calc__btn {
    font-size: 14px;
  }
}