/* ============================================
   Qr Generator MAX - Main Styles
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================
   Hero Section
   ============================================ */

.hero {
  position: relative;
  padding: var(--space-16) 0 var(--space-12);
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-20) 0 var(--space-16);
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: var(--space-24) 0 var(--space-20);
  }
}

/* Hero Background Pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero__container {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  text-align: center;
}

@media (min-width: 640px) {
  .hero__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .hero__container {
    padding: 0 var(--space-8);
  }
}

/* Hero Badge */
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero__badge-icon {
  width: 16px;
  height: 16px;
}

/* Hero Title */
.hero__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__title-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (min-width: 640px) {
  .hero__title {
    font-size: var(--text-5xl);
  }
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: var(--text-6xl);
  }
}

/* Hero Description */
.hero__description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .hero__description {
    font-size: var(--text-xl);
  }
}

/* Hero CTA Buttons */
.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero__cta {
    flex-direction: row;
    gap: var(--space-4);
  }
}

.hero__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  width: 100%;
  max-width: 280px;
}

@media (min-width: 640px) {
  .hero__btn {
    width: auto;
    max-width: none;
  }
}

.hero__btn--primary {
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  box-shadow: var(--shadow-md);
}

.hero__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: white;
}

.hero__btn--secondary {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-medium);
}

.hero__btn--secondary:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-dark);
  color: var(--text-primary);
}

.hero__btn-icon {
  width: 20px;
  height: 20px;
}

/* ============================================
   Tool Section
   ============================================ */

.tool-section {
  padding: var(--space-12) 0;
  background-color: var(--bg-secondary);
  position: relative;
}

@media (min-width: 768px) {
  .tool-section {
    padding: var(--space-16) 0;
  }
}

@media (min-width: 1024px) {
  .tool-section {
    padding: var(--space-20) 0;
  }
}

.tool-section__container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .tool-section__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .tool-section__container {
    padding: 0 var(--space-8);
  }
}

/* ============================================
   How To Use Section
   ============================================ */

.how-to-use {
  padding: var(--space-16) 0;
  position: relative;
}

@media (min-width: 768px) {
  .how-to-use {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .how-to-use {
    padding: var(--space-24) 0;
  }
}

.how-to-use__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .how-to-use__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .how-to-use__container {
    padding: 0 var(--space-8);
  }
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section-header__title {
    font-size: var(--text-4xl);
  }
}

.section-header__description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Steps Grid */
.how-to-use__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .how-to-use__steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .how-to-use__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
  }
}

/* Step Card */
.step-card {
  position: relative;
  text-align: center;
  padding: var(--space-6);
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

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

.step-card__number {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
}

.step-card__icon {
  width: 64px;
  height: 64px;
  margin: var(--space-4) auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-radius: var(--radius-xl);
}

.step-card__icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.step-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.step-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   FAQ Section
   ============================================ */

.faq {
  padding: var(--space-16) 0;
  background-color: var(--bg-secondary);
}

@media (min-width: 768px) {
  .faq {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .faq {
    padding: var(--space-24) 0;
  }
}

.faq__container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .faq__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .faq__container {
    padding: 0 var(--space-8);
  }
}

/* FAQ List */
.faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* FAQ Item */
.faq__item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.faq__item:hover {
  border-color: var(--border-medium);
}

.faq__item--open {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

/* FAQ Question */
.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.faq__question-text {
  padding-right: var(--space-4);
}

/* FAQ Arrow */
.faq__arrow {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--transition-base),
              color var(--transition-fast);
}

.faq__item--open .faq__arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

/* FAQ Answer */
.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq__item--open .faq__answer {
  max-height: 500px;
}

.faq__answer-content {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq__answer-content p + p {
  margin-top: var(--space-3);
}

/* ============================================
   Features Section (Bonus)
   ============================================ */

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

@media (min-width: 768px) {
  .features {
    padding: var(--space-20) 0;
  }
}

.features__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .features__container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .features__container {
    padding: 0 var(--space-8);
  }
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

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

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-radius: var(--radius-lg);
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.feature-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.feature-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}