/* ============================================
   SNAPBUZZ DESIGN SYSTEM
   All design tokens defined in one place.
   ============================================ */

:root {
  /* ========================
     COLORS
     ======================== */
  --color-black:      #0A0A0A;
  --color-white:      #FFFFFF;
  --color-grey-100:   #F5F5F5;
  --color-grey-200:   #E5E5E5;
  --color-grey-300:   #D4D4D4;
  --color-grey-500:   #737373;
  --color-grey-700:   #404040;
  --color-grey-900:   #171717;
  --color-red:        #DC2626;
  --color-red-hover:  #B91C1C;

  /* ========================
     TYPOGRAPHY
     ======================== */
  --font-heading:     'Anton', sans-serif;
  --font-subheading:  'Oswald', sans-serif;
  --font-body:        'Lato', sans-serif;

  /* Font sizes */
  --text-h1:          42px;
  --text-h2:          38px;
  --text-h3:          23px;
  --text-h4:          19px;
  --text-body:        16px;
  --text-small:       14px;
  --text-tiny:        12px;

  /* Line heights */
  --leading-heading:  1.15;
  --leading-body:     1.6;
  --leading-tight:    1.3;

  /* Letter spacing */
  --tracking-heading: 0.03em;
  --tracking-body:    0;

  /* ========================
     SPACING
     ======================== */
  --space-xs:         8px;
  --space-sm:         16px;
  --space-md:         24px;
  --space-lg:         40px;
  --space-xl:         64px;
  --space-2xl:        80px;
  --space-3xl:        120px;

  /* Section spacing */
  --section-padding-y:    var(--space-2xl);
  --section-padding-x:    var(--space-md);

  /* ========================
     LAYOUT
     ======================== */
  --content-max-width:    1200px;
  --content-narrow:       800px;
  --content-wide:         1400px;

  /* ========================
     BUTTONS
     ======================== */
  --btn-padding:          14px 32px;
  --btn-padding-sm:       10px 20px;
  --btn-radius:           8px;
  --btn-font-size:        15px;
  --btn-font-weight:      600;
  --btn-letter-spacing:   0.02em;

  /* ========================
     CARDS
     ======================== */
  --card-padding:         var(--space-md);
  --card-radius:          16px;
  --card-radius-sm:       12px;
  --card-shadow:          0 1px 3px rgba(0, 0, 0, 0.08);
  --card-shadow-hover:    0 4px 12px rgba(0, 0, 0, 0.12);
  --card-border:          1px solid var(--color-grey-200);

  /* ========================
     TRANSITIONS
     ======================== */
  --transition-fast:      150ms ease;
  --transition-normal:    250ms ease;
}

/* ========================
   RESPONSIVE OVERRIDES
   ======================== */
@media (max-width: 768px) {
  :root {
    --text-h1:          30px;
    --text-h2:          28px;
    --text-h3:          20px;
    --text-h4:          17px;
    --section-padding-y: var(--space-xl);
  }
}

/* ============================================
   GLOBAL ELEMENT STYLES
   ============================================ */

/* Typography */
h1, h2 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

h1 {
  font-size: var(--text-h1);
}

h2 {
  font-size: var(--text-h2);
}

h3, h4, h5, h6 {
  font-family: var(--font-subheading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: var(--leading-tight);
}

h3 {
  font-size: var(--text-h3);
}

h4 {
  font-size: var(--text-h4);
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-grey-700);
}

/* ============================================
   SECTION COMPONENT
   ============================================ */

.section {
  padding: var(--section-padding-y) var(--section-padding-x);
}

.section__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.section--white {
  background: var(--color-white);
}

.section--grey {
  background: var(--color-grey-100);
}

.section--dark {
  background: var(--color-grey-900);
  color: var(--color-white);
}

.section--narrow .section__inner {
  max-width: var(--content-narrow);
}

.section--wide .section__inner {
  max-width: var(--content-wide);
}

/* ============================================
   BUTTON COMPONENT
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--btn-padding);
  border-radius: var(--btn-radius);
  font-family: var(--font-body);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  letter-spacing: var(--btn-letter-spacing);
  text-decoration: none;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn--primary:hover {
  background: var(--color-red-hover);
  border-color: var(--color-red-hover);
}

.btn--secondary {
  background: transparent;
  color: var(--color-grey-700);
  border-color: var(--color-grey-300);
}

.btn--secondary:hover {
  background: var(--color-grey-100);
  border-color: var(--color-grey-500);
}

.btn--dark {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--dark:hover {
  background: var(--color-white);
  color: var(--color-black);
}

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

/* ============================================
   HERO COMPONENT
   ============================================ */

.hero {
  padding: var(--space-3xl) var(--section-padding-x);
  text-align: center;
}

.hero__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.hero--dark {
  background: var(--color-grey-900);
  color: var(--color-white);
}

.hero--white {
  background: var(--color-white);
  color: var(--color-black);
}

.hero--image {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero--image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, var(--hero-overlay-opacity, 0.6));
}

.hero--image .hero__inner {
  position: relative;
  z-index: 1;
}

.hero__headline {
  font-size: var(--text-h1);
  margin-bottom: var(--space-md);
}

.hero__subhead {
  font-size: 1.125rem;
  max-width: 48rem;
  margin: 0 auto var(--space-lg);
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

@media (max-width: 640px) {
  .hero {
    padding: var(--space-xl) var(--section-padding-x);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .hero__actions .btn {
    width: 100%;
    max-width: 300px;
  }
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.card {
  background: var(--color-white);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  border: var(--card-border);
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--card-shadow-hover);
}

.card--feature {
  text-align: center;
}

.card__icon {
  width: 64px;
  height: 64px;
  background: var(--color-grey-100);
  border-radius: var(--card-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-sm);
}

.card__icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-grey-700);
}

.card__title {
  font-size: var(--text-h4);
  color: var(--color-black);
  margin-bottom: var(--space-xs);
}

.card__body {
  color: var(--color-grey-700);
}

/* Clickable card */
.card--link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.card--link:hover {
  box-shadow: var(--card-shadow-hover);
}

.card__cta {
  color: var(--color-red);
  font-weight: 600;
  margin-top: var(--space-sm);
}

/* ============================================
   CTA BLOCK COMPONENT
   ============================================ */

.cta-block {
  padding: var(--space-xl) var(--section-padding-x);
  text-align: center;
}

.cta-block__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.cta-block--dark {
  background: var(--color-grey-900);
  color: var(--color-white);
}

.cta-block--red {
  background: var(--color-red);
  color: var(--color-white);
}

.cta-block__headline {
  font-size: var(--text-h2);
  margin-bottom: var(--space-sm);
}

.cta-block__subhead {
  font-size: 1.125rem;
  max-width: 42rem;
  margin: 0 auto var(--space-lg);
  opacity: 0.9;
}

/* ============================================
   FAQ COMPONENT
   ============================================ */

.faq {
  max-width: var(--content-narrow);
  margin: 0 auto;
}

.faq__item {
  background: var(--color-white);
  border-radius: var(--card-radius-sm);
  border: var(--card-border);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.faq__question {
  padding: var(--space-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--color-black);
}

.faq__question:hover {
  background: var(--color-grey-100);
}

.faq__icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--space-sm);
}

.faq__item.active .faq__icon {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

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

.faq__answer-inner {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-grey-700);
}

/* ============================================
   MODEL CARD COMPONENT
   ============================================ */

.model-card {
  background: var(--color-white);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: var(--card-border);
}

.model-card--highlighted {
  border-width: 2px;
  border-color: var(--color-grey-300);
}

.model-card__header {
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.model-card__icon {
  width: 40px;
  height: 40px;
  background: var(--color-grey-100);
  border-radius: var(--card-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.model-card__title {
  font-size: var(--text-h4);
  color: var(--color-black);
}

.model-card__rows {
  padding: 0 var(--space-md);
}

.model-card__row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-grey-100);
  font-size: var(--text-small);
}

.model-card__row:last-child {
  border-bottom: none;
}

.model-card__label {
  color: var(--color-grey-500);
}

.model-card__value {
  font-weight: 500;
}

.model-card__value--highlight {
  color: var(--color-red);
  font-weight: 600;
}

.model-card__footer {
  padding: var(--space-md);
}

.model-card__footer .btn {
  width: 100%;
}

/* ============================================
   SECTION HEADER COMPONENT
   ============================================ */

.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-header__title {
  font-size: var(--text-h2);
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.section--dark .section-header__title {
  color: var(--color-white);
}

.section-header__subtitle {
  font-size: 1.125rem;
  max-width: 42rem;
  margin: 0 auto;
  color: var(--color-grey-700);
}

.section--dark .section-header__subtitle {
  color: var(--color-grey-100);
}

/* ============================================
   GRID UTILITIES
   ============================================ */

.grid {
  display: grid;
  gap: var(--space-lg);
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   STEP COMPONENT
   ============================================ */

.step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.step__number {
  width: 64px;
  height: 64px;
  background: var(--color-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step__content {
  flex: 1;
}

.step__title {
  font-size: var(--text-h4);
  color: var(--color-black);
  margin-bottom: var(--space-xs);
}

.step__body {
  color: var(--color-grey-700);
}

/* ============================================
   CHECK LIST COMPONENT
   ============================================ */

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.check-list__icon {
  width: 20px;
  height: 20px;
  color: var(--color-red);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================
   LIGHTBOX
   ============================================ */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.lightbox__close:hover {
  color: var(--color-grey-300);
}

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--card-radius-sm);
}

.lightbox__caption {
  color: var(--color-white);
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 1.125rem;
}