/* ==========================================================================
   SENTHESIS DEV — MOBILE RESPONSIVENESS (320px — 1440px+)
   ========================================================================== */

html {
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}
body {
  min-width: 0;
  overflow-x: hidden;
  width: 100%;
}
img, svg, video, canvas {
  display: block;
  max-width: 100%;
  height: auto;
}
button, input, textarea, select {
  max-width: 100%;
}

/* ==========================================================================
   Large Desktops & Laptops (1280px — 1440px+)
   ========================================================================== */
@media (min-width: 1280px) {
  .section {
    padding-left: clamp(2rem, 5vw, 4rem);
    padding-right: clamp(2rem, 5vw, 4rem);
  }
}

/* ==========================================================================
   Tablets & Compact Laptops (901px — 1100px)
   ========================================================================== */
@media (max-width: 1100px) {
  .nav-wrap { padding: 14px 18px; }
  .nav { height: 56px; }
  .nav-links, .nav-cta { display: none; }
  .menu { display: block; }
  .mobile-menu { z-index: 55; }

  .hero {
    padding-left: 6vw;
    padding-right: 6vw;
  }
  .hero h1 { font-size: clamp(3.5rem, 8.8vw, 6.2rem); }
  .hero-bottom { gap: 3vw; }
  .hero-bottom > p { max-width: 320px; }
  .orbital { width: 75vw; right: -20vw; opacity: 0.82; }

  .section { padding-left: 6vw; padding-right: 6vw; }

  .section-head {
    grid-template-columns: 1fr 2fr;
    gap: 20px;
  }
  .section-head > p:last-child {
    grid-column: 2;
  }

  .process-timeline {
    grid-template-columns: repeat(3, 1fr);
  }
  .handover-grid, .support-grid, .work-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Small Tablets (761px — 900px)
   ========================================================================== */
@media (min-width: 761px) and (max-width: 900px) {
  .hero { min-height: 680px; padding-top: 140px; }
  .hero h1 { max-width: 700px; line-height: 0.9; }
  .hero-bottom { display: block; }
  .hero-actions { margin-top: 24px; }
  .orbital { top: 40%; right: -28vw; width: 78vw; opacity: 0.52; }

  .manifesto { min-height: auto; padding: 70px 6vw 50px; }
  .manifesto .eyebrow { position: static; margin-bottom: 16px; }
  .manifesto-copy { padding-left: 2vw; }

  .services-grid { grid-template-columns: 1fr; }
  .trust-intro-grid { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1.4fr; }
  .contact-details { grid-column: 2; margin-top: 20px; }
}

/* ==========================================================================
   Mobile Phones (390px — 760px, including 430px iPhone Pro Max)
   ========================================================================== */
@media (max-width: 760px) {
  .cursor { display: none !important; }
  .nav-wrap { padding: 10px 14px; }
  .nav { height: 54px; padding-left: 14px; padding-right: 12px; }
  .nav-links, .nav-cta { display: none; }
  .menu { display: block; }

  /* Hero Section Mobile */
  .hero {
    min-height: 620px;
    padding: 105px 6vw 45px;
    align-items: flex-start;
  }
  .hero-content { max-width: 100%; }
  .hero .eyebrow { max-width: 260px; font-size: 10px; }
  .hero h1 {
    font-size: clamp(2.9rem, 12vw, 4.6rem);
    line-height: 0.92;
    letter-spacing: -0.07em;
    margin: 18px 0 20px;
  }
  .hero-caps {
    gap: 6px 8px;
    margin-bottom: 20px;
  }
  .hero-cap-tag {
    font-size: 10px;
    padding: 4px 10px;
  }
  .hero-bottom { display: block; }
  .hero-bottom > p { font-size: 13px; max-width: 100%; line-height: 1.6; }
  .hero-actions {
    margin-top: 24px;
    gap: 16px;
    flex-wrap: wrap;
  }
  .hero-actions .button {
    padding: 14px 20px;
    min-height: 48px;
    font-size: 13px;
  }
  .scroll-cue { display: none; }
  .orbital { width: 110vw; right: -45vw; top: 68%; opacity: 0.55; }
  .orb-hud { display: none; }

  /* Manifesto Mobile */
  .manifesto {
    padding: 50px 6vw 45px;
    min-height: auto;
    display: block;
  }
  .manifesto .eyebrow {
    position: static;
    margin-bottom: 14px;
    color: #52514d;
  }
  .manifesto h2 {
    font-size: clamp(2.6rem, 11vw, 4rem);
    margin: 0 0 16px;
  }
  .manifesto-copy { padding: 14px 0 0; }
  .manifesto-copy p { font-size: 1.15rem; max-width: 100%; }

  /* Section heads */
  .section-head {
    display: block;
    margin-bottom: 28px;
  }
  .section-head h2 {
    font-size: clamp(2.6rem, 11vw, 4rem);
    margin: 12px 0 10px;
  }
  .section-head > p:last-child {
    max-width: 100%;
    padding-top: 0;
    font-size: 13px;
  }

  /* Services Grid */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .service-card {
    padding: 24px 18px;
  }
  .service-card h3 {
    font-size: 1.7rem;
  }

  /* Trust & Credibility Section */
  .trust-intro-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 36px;
  }
  .process-timeline {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 36px;
  }
  .process-card {
    padding: 20px 18px;
  }
  .handover-grid, .support-grid, .work-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .policy-block-head h3 {
    font-size: 1.9rem;
  }
  .trust-audit-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px 18px;
    gap: 16px;
  }

  /* About */
  .about {
    display: block;
    padding: 50px 6vw 45px;
  }
  .about h2 { font-size: clamp(2.6rem, 10.5vw, 3.8rem); }
  .about-copy { padding-top: 28px; }
  .about-copy > p { font-size: 1.15rem; }
  .founders { margin-top: 30px; }

  /* Contact */
  .contact { padding: 50px 6vw; }
  .contact-grid { display: block; }
  .contact h2 {
    font-size: clamp(2.8rem, 12vw, 4rem);
    margin-top: 14px;
  }
  .contact-details { margin-top: 36px; }
  .contact-details a { overflow-wrap: anywhere; }

  /* Footer */
  footer {
    grid-template-columns: 1fr;
    padding: 36px 6vw 24px;
    gap: 22px;
  }
  footer p { grid-column: 1; }
  footer small { grid-column: 1; margin-top: 18px; }

  /* Mobile Navigation Menu */
  .mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 55;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 10px;
    padding: 85px 6vw 30px;
    padding-bottom: max(30px, env(safe-area-inset-bottom));
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
    background: rgba(10, 10, 11, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .mobile-back {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    min-height: 44px;
    cursor: pointer;
  }
  .mobile-back::before {
    content: '←';
    color: var(--acid);
    font-size: 14px;
  }
  .mobile-menu a {
    padding: 14px 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    font-size: clamp(1.35rem, 6vw, 1.9rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    min-height: 52px;
    display: flex;
    align-items: center;
  }
  .mobile-menu button.button {
    margin-top: auto;
    width: 100%;
    min-height: 48px;
  }

  /* Brief Modal Mobile */
  .brief, .privacy-dialog {
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    margin: 0;
  }
  .brief-inner, .privacy-inner {
    padding: 68px 5vw 30px;
    padding-bottom: max(80px, calc(env(safe-area-inset-bottom) + 60px));
  }
  .close {
    top: 14px;
    right: 14px;
    width: 44px;
    height: 44px;
  }
  .brief-step h2 {
    font-size: clamp(1.9rem, 8.5vw, 2.7rem);
  }
  .form-grid-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .contact-method-group {
    grid-template-columns: 1fr;
  }
  .services-choice-grid {
    grid-template-columns: 1fr;
  }
  .backend-choice-cards {
    grid-template-columns: 1fr;
  }
  .backend-features-grid {
    grid-template-columns: 1fr;
  }
  .budget-grid, .deadline-grid {
    grid-template-columns: 1fr 1fr;
  }
  .support-choice-cards {
    grid-template-columns: 1fr;
  }
  .brief-controls {
    position: sticky;
    bottom: -30px;
    background: #0f0f11;
    margin: 20px -5vw -30px;
    padding: 16px 5vw;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
    z-index: 5;
  }
}

/* ==========================================================================
   Small Mobile Phones (320px — 375px)
   ========================================================================== */
@media (max-width: 375px) {
  .hero h1 { font-size: 2.75rem; }
  .hero { min-height: 560px; padding-top: 95px; }
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }
  .hero-actions .button { width: 100%; }
  .manifesto h2 { font-size: 2.35rem; }
  .service-card h3 { font-size: 1.45rem; }
  .budget-grid, .deadline-grid {
    grid-template-columns: 1fr;
  }
  .choice-pill { font-size: 12px; }
  .timeline-list { font-size: 11px; }
}