/* ============================================================
   RIIF — Responsive Styles (Mobile-First)
   ============================================================ */

@import url('./variables.css');

/* ============================================================
   BASE (< 480px) — Extra Small Mobile
   ============================================================ */

/* Fluid typography scale — base */
html {
  font-size: 15px;
}

.container {
  padding-inline: var(--container-px-sm);
}

/* Hero */
.hero-section {
  padding-block: 100px 60px;
  min-height: auto;
}

.hero__grid {
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

.hero__title {
  font-size: clamp(1.875rem, 8vw, 2.5rem);
}

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

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

.hero__actions .btn {
  width: 100%;
  justify-content: center;
}

.hero__metrics {
  gap: var(--space-4);
}

.hero__metric-divider {
  display: none;
}

/* Section header */
.section-header {
  margin-bottom: var(--space-10);
}

.section-title {
  font-size: clamp(var(--text-2xl), 7vw, var(--text-3xl));
}

/* Grids → single column */
.stats-grid,
.grid-2,
.grid-3,
.grid-4 {
  grid-template-columns: 1fr;
}

.pricing-grid {
  grid-template-columns: 1fr;
}

.pricing-card--featured {
  transform: none;
}

.pricing-card--featured:hover {
  transform: translateY(-4px);
}

/* Process steps: vertical */
.process-steps {
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.process-steps::before {
  display: none;
}

/* Portfolio */
.portfolio-grid {
  grid-template-columns: 1fr;
}

.portfolio-card--featured {
  grid-column: span 1;
  aspect-ratio: 16 / 10;
}

/* Team */
.team-grid {
  grid-template-columns: 1fr 1fr;
}

/* Testimonials */
.testimonial-grid {
  grid-template-columns: 1fr;
}

/* CTA Banner */
.cta-banner {
  padding: var(--space-10) var(--space-5);
  border-radius: var(--radius-2xl);
}

.cta-banner--split .cta-banner__inner {
  flex-direction: column;
  gap: var(--space-6);
}

.cta-banner--split .cta-banner__actions {
  justify-content: flex-start;
  width: 100%;
}

.cta-banner__actions {
  flex-direction: column;
  align-items: stretch;
}

.cta-banner__actions .btn {
  width: 100%;
  justify-content: center;
}

/* Cards */
.card--lg {
  padding: var(--space-6);
}

/* Navbar */
.navbar__hamburger {
  display: flex;
}

.navbar__nav,
.navbar__actions {
  display: none;
}

/* Services / Why — single column on mobile */
.services-grid {
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.why-block {
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.why-block--image-right {
  direction: ltr;
}

/* Footer */
.footer__grid {
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.footer__bottom {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

/* Buttons — touch friendly */
.btn {
  min-height: 44px;
  padding: 0.75rem 1.25rem;
}

.btn--sm {
  min-height: 36px;
}

/* Sections */
.section {
  padding-block: var(--section-padding-y-sm);
}

/* Tabs — scrollable */
.tabs__nav {
  gap: 0;
}

.tab-btn {
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-xs);
}

/* Logo strip */
.logo-strip {
  gap: var(--space-6);
}

.logo-strip__item img {
  height: 22px;
}

/* Timeline */
.process-step {
  align-items: flex-start;
  text-align: left;
  flex-direction: row;
  gap: var(--space-4);
  padding: var(--space-4) 0;
}

.process-step__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  font-size: var(--text-base);
  margin-bottom: 0;
}

.process-step__content {
  flex: 1;
}

/* ============================================================
   XS — 480px+
   ============================================================ */

@media (min-width: 480px) {

  html {
    font-size: 15.5px;
  }

  .container {
    padding-inline: var(--space-5);
  }

  /* Hero */
  .hero__title {
    font-size: clamp(2.25rem, 8vw, 3rem);
  }

  .hero__actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero__actions .btn {
    width: auto;
  }

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

  /* Pricing — still single col, featured card bigger */
  .pricing-card--featured {
    transform: none;
  }

  /* CTA */
  .cta-banner__actions {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .cta-banner__actions .btn {
    width: auto;
  }

  /* Stats: 2 col */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Testimonials: still 1 col */
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  /* Section header */
  .section-title {
    font-size: clamp(var(--text-3xl), 7vw, var(--text-4xl));
  }

}

/* ============================================================
   SM — 768px (Tablets)
   ============================================================ */

@media (min-width: 768px) {

  html {
    font-size: 16px;
  }

  .container {
    padding-inline: var(--container-px);
  }

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

  /* Grids */
  .grid-2,
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  /* Hero */
  .hero-section {
    padding-block: 120px 80px;
    min-height: 90vh;
  }

  .hero__title {
    font-size: clamp(var(--text-4xl), 6vw, var(--text-5xl));
  }

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

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

  .hero__actions .btn {
    width: auto;
  }

  .hero__metrics {
    gap: var(--space-6);
  }

  .hero__metric-divider {
    display: block;
  }

  /* Section header */
  .section-title {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  }

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

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

  /* Testimonials: 2 col */
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Pricing: 2 col (+ featured stacked) */
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }

  /* Process steps: 2-2 split */
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .process-steps::before {
    display: none;
  }

  .process-step {
    align-items: center;
    text-align: center;
    flex-direction: column;
    gap: 0;
  }

  .process-step__number {
    margin-bottom: var(--space-5);
    width: 60px;
    height: 60px;
  }

  /* CTA banner */
  .cta-banner {
    padding: var(--space-14) var(--space-10);
    border-radius: var(--radius-3xl);
  }

  .cta-banner--split .cta-banner__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .cta-banner--split .cta-banner__actions {
    width: auto;
  }

  .cta-banner__actions {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .cta-banner__actions .btn {
    width: auto;
  }

  /* Navbar */
  .navbar__hamburger {
    display: none;
  }

  .navbar__nav {
    display: flex;
  }

  .navbar__actions {
    display: flex;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  /* Modal */
  .modal {
    max-width: 560px;
  }

  /* Card */
  .card--lg {
    padding: var(--space-10) var(--space-12);
  }

  /* Tabs */
  .tab-btn {
    font-size: var(--text-sm);
    padding: var(--space-3) var(--space-5);
  }

}

/* ============================================================
   MD — 1024px (Small Desktop / Large Tablet)
   ============================================================ */

@media (min-width: 1024px) {

  html {
    font-size: 16px;
  }

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

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

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

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

  /* Hero */
  .hero-section {
    padding-block: 140px 100px;
    min-height: 100vh;
  }

  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }

  .hero__title {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  }

  .hero__actions {
    flex-direction: row;
  }

  /* Section title */
  .section-title {
    font-size: clamp(var(--text-4xl), 4vw, var(--text-5xl));
  }

  /* Navbar — show desktop nav, hide hamburger */
  .navbar__nav {
    display: flex;
  }

  .navbar__actions {
    display: flex;
  }

  .navbar__hamburger {
    display: none;
  }

  .mobile-nav,
  .mobile-nav-backdrop {
    display: none !important;
  }

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

  /* Why block */
  .why-block {
    grid-template-columns: 1fr 1fr;
  }

  /* Process steps: horizontal (4 steps, connecting line) */
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .process-steps::before {
    display: block;
  }

  .process-step {
    align-items: center;
    text-align: center;
    flex-direction: column;
    gap: 0;
  }

  .process-step__number {
    width: 72px;
    height: 72px;
    font-size: var(--text-xl);
    margin-bottom: var(--space-5);
  }

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

  .portfolio-card--featured {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
  }

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

  /* Testimonials: 3 col */
  .testimonial-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Pricing: 3 col */
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing-card--featured {
    transform: scale(1.04);
  }

  .pricing-card--featured:hover {
    transform: scale(1.04) translateY(-4px);
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  /* Modal */
  .modal--lg { max-width: 720px; }
  .modal--xl { max-width: 920px; }

}

/* ============================================================
   LG — 1280px (Desktop)
   ============================================================ */

@media (min-width: 1280px) {

  .container {
    padding-inline: var(--space-8);
  }

  /* Hero */
  .hero__title {
    font-size: clamp(var(--text-5xl), 4.5vw, var(--text-7xl));
  }

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

  /* Section title */
  .section-title {
    font-size: clamp(var(--text-4xl), 3.5vw, var(--text-5xl));
  }

  /* Section header */
  .section-header {
    margin-bottom: var(--space-20);
  }

  /* Navbar */
  .navbar__nav {
    gap: var(--space-1);
  }

  .nav-link {
    padding: var(--space-2) var(--space-4);
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
  }

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

  /* CTA banner */
  .cta-banner {
    padding: var(--space-20) var(--space-16);
  }

}

/* ============================================================
   XL — 1440px (Large Desktop)
   ============================================================ */

@media (min-width: 1440px) {

  .container {
    padding-inline: var(--space-10);
  }

  /* Hero */
  .hero__title {
    font-size: 5rem;
  }

  .hero__grid {
    gap: var(--space-24);
  }

  /* Stats grid optional 5 cols */
  .stats-grid--5 {
    grid-template-columns: repeat(5, 1fr);
  }

  /* Section padding full */
  .section {
    padding-block: calc(var(--section-padding-y) * 1.1);
  }

  /* Footer wider */
  .footer__grid {
    gap: var(--space-16);
  }

}

/* ============================================================
   UTILITY: RESPONSIVE VISIBILITY
   ============================================================ */

.hide-mobile { display: none; }
.hide-tablet { display: block; }
.hide-desktop { display: block; }

@media (min-width: 768px) {
  .hide-mobile  { display: revert; }
  .hide-tablet  { display: none; }
  .show-mobile  { display: none; }
}

@media (min-width: 1024px) {
  .hide-tablet  { display: revert; }
  .hide-desktop { display: none; }
  .show-tablet  { display: none; }
}

/* ============================================================
   RESPONSIVE TYPOGRAPHY — FLUID SCALE
   ============================================================ */

/* Fluid heading sizes using clamp */
.text-fluid-hero {
  font-size: clamp(2.25rem, 7vw + 0.5rem, 5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.text-fluid-h1 {
  font-size: clamp(1.875rem, 4vw + 0.5rem, 3.75rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.text-fluid-h2 {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 3rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.text-fluid-h3 {
  font-size: clamp(1.25rem, 2vw + 0.5rem, 2.25rem);
  line-height: 1.3;
}

.text-fluid-body {
  font-size: clamp(var(--text-sm), 1.5vw, var(--text-lg));
  line-height: var(--leading-relaxed);
}

/* ============================================================
   RESPONSIVE GRID HELPERS
   ============================================================ */

/* 4 col → 2 col → 1 col */
.grid-responsive-4 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 480px) {
  .grid-responsive-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* 3 col → 2 col → 1 col */
.grid-responsive-3 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

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

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

/* 2 col → 1 col */
.grid-responsive-2 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-responsive-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Split (60/40) → stacked */
.grid-split {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .grid-split {
    grid-template-columns: 3fr 2fr;
    align-items: center;
  }

  .grid-split--reverse {
    grid-template-columns: 2fr 3fr;
  }

  .grid-split--reverse > *:first-child {
    order: 2;
  }

  .grid-split--reverse > *:last-child {
    order: 1;
  }
}

/* ============================================================
   RESPONSIVE NAVBAR OVERRIDES
   ============================================================ */

@media (max-width: 767px) {

  .navbar {
    height: var(--navbar-height-sm);
  }

  .navbar__logo-img {
    height: 28px;
  }

  .navbar__inner {
    justify-content: space-between;
  }

  /* Show hamburger */
  .navbar__hamburger {
    display: flex;
    margin-left: auto;
  }

  /* Mobile menu backdrop */
  .mobile-nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: calc(var(--z-sticky) - 2);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-300) var(--ease-out);
  }

  .mobile-nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }

}

/* ============================================================
   RESPONSIVE CARD ADJUSTMENTS
   ============================================================ */

@media (max-width: 767px) {

  .card {
    padding: var(--space-6);
  }

  .service-card {
    padding: var(--space-6);
  }

  .stat-card {
    padding: var(--space-6);
    text-align: left;
  }

  .stat-card__icon {
    margin-inline: 0;
  }

  .testimonial-card {
    padding: var(--space-6);
  }

  .pricing-card {
    padding: var(--space-6) var(--space-6) var(--space-8);
  }

}

/* ============================================================
   RESPONSIVE SECTION HEADER
   ============================================================ */

@media (max-width: 767px) {

  .section-header {
    margin-bottom: var(--space-10);
  }

  .section-subtitle {
    font-size: var(--text-base);
  }

  .section-eyebrow {
    font-size: 10px;
  }

}

/* ============================================================
   RESPONSIVE ACCORDION & TABS
   ============================================================ */

@media (max-width: 767px) {

  .accordion-trigger {
    padding: var(--space-4);
    font-size: var(--text-sm);
  }

  .accordion-content {
    padding: 0 var(--space-4) var(--space-4);
    padding-top: var(--space-3);
  }

  /* Replace tab layout with accordion on mobile */
  .tabs--collapse-mobile .tabs__nav {
    display: none;
  }

  .tabs--collapse-mobile .tab-panel {
    display: block;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-3);
  }

  .tabs--collapse-mobile .tab-panel::before {
    content: attr(data-label);
    display: block;
    padding: var(--space-4);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    color: var(--color-primary);
    background: var(--gradient-primary-soft);
    border-bottom: 1px solid rgba(79, 70, 229, 0.15);
  }

  .tabs--collapse-mobile .tab-panel__content {
    padding: var(--space-4);
  }

}

/* ============================================================
   RESPONSIVE MODALS
   ============================================================ */

@media (max-width: 767px) {

  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    max-width: 100%;
    width: 100%;
    max-height: 92vh;
    border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
    transform: translateY(100%);
  }

  .modal-backdrop.is-open .modal {
    transform: translateY(0);
  }

  /* Drag handle for bottom sheet */
  .modal::before {
    content: '';
    display: block;
    width: 36px;
    height: 4px;
    background: var(--color-border-medium);
    border-radius: var(--radius-full);
    margin: var(--space-3) auto 0;
  }

  .modal__header {
    padding: var(--space-4) var(--space-5);
  }

  .modal__body {
    padding: var(--space-5);
  }

  .modal__footer {
    padding: var(--space-4) var(--space-5);
    flex-direction: column-reverse;
    gap: var(--space-3);
  }

  .modal__footer .btn {
    width: 100%;
    justify-content: center;
  }

}

/* ============================================================
   RESPONSIVE FOOTER
   ============================================================ */

@media (max-width: 767px) {

  .footer {
    padding-top: var(--space-12);
    padding-bottom: var(--space-6);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
  }

  .footer__brand-desc {
    max-width: 100%;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

}

@media (min-width: 768px) and (max-width: 1023px) {

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: span 2;
  }

}

/* ============================================================
   TOUCH / POINTER ADJUSTMENTS
   ============================================================ */

@media (hover: none) and (pointer: coarse) {

  /* Disable hover animations on touch devices */
  .card:hover,
  .service-card:hover,
  .stat-card:hover,
  .testimonial-card:hover,
  .portfolio-card:hover {
    transform: none;
    box-shadow: var(--shadow-card);
  }

  .btn:hover {
    transform: none;
  }

  .btn-primary:hover {
    box-shadow: var(--shadow-primary-sm);
  }

  /* Larger tap targets */
  .btn {
    min-height: 48px;
    padding: 0.8125rem 1.5rem;
  }

  .nav-link,
  .mobile-nav__link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .accordion-trigger {
    min-height: 52px;
  }

  .tab-btn {
    min-height: 44px;
  }

  /* Show team overlay permanently on touch */
  .team-card__overlay {
    transform: translateY(0);
    background: linear-gradient(to top, rgba(15, 13, 46, 0.85) 0%, transparent 100%);
  }

  .team-card__overlay-bio {
    display: none;
  }

}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .navbar,
  .mobile-nav,
  .modal-backdrop,
  .cta-banner,
  .hero-section::before,
  .hero-section::after {
    display: none !important;
  }

  .hero-section {
    min-height: auto;
    background: white !important;
    color: black !important;
    padding-block: var(--space-8);
  }

  .hero__title,
  .section-title {
    color: black !important;
    -webkit-text-fill-color: black !important;
  }

  body {
    font-size: 12pt;
    color: black;
    background: white;
  }

  .container {
    max-width: 100%;
    padding-inline: 0;
  }

  .card,
  .service-card,
  .testimonial-card {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .btn {
    display: none;
  }

}