/* =============================================================
   THE BELL SYSTEM — styles.css
   Color tokens, base, layout, components, sections, responsive
   ============================================================= */

/* ---- Tokens -------------------------------------------------- */
:root {
  --navy:        #1C3A5E;
  --navy-dark:   #0F2235;
  --navy-mid:    #254F7E;
  --navy-pale:   #EEF3F9;
  --gold:        #B8965A;
  --gold-light:  #D4B47C;
  --gold-dim:    #8A6C3A;
  --silver:      #8C9BAB;
  --silver-light:#C5CDD6;
  --silver-pale: #F4F6F8;
  --white:       #FFFFFF;
  --text:        #1A2332;
  --text-mid:    #4A5568;
  --text-light:  #718096;
  --border:      #DDE3EA;
  --radius:      10px;
  --radius-lg:   16px;
  --shadow-sm:   0 1px 4px rgba(28,58,94,.06);
  --shadow-md:   0 4px 20px rgba(28,58,94,.10);
  --shadow-lg:   0 12px 40px rgba(28,58,94,.16);
  --transition:  0.25s ease;
  --nav-h:       72px;
  --section-gap: 96px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy-dark);
}

h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1rem; }
h5 { font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; color: var(--text-light); }

p { color: var(--text-mid); }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---- Layout -------------------------------------------------- */
.container {
  width: min(1160px, 100% - 48px);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-gap);
}
.section-alt  { background: var(--silver-pale); }
.section-dark { background: var(--navy-dark); color: var(--white); }
.section-dark h2, .section-dark h3, .section-dark h4 { color: var(--white); }
.section-dark p { color: var(--silver-light); }

/* ---- Shared Components --------------------------------------- */

/* Eyebrow */
.eyebrow {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--navy-mid);
  margin-bottom: .75rem;
}
.eyebrow.gold { color: var(--gold); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: 'Montserrat', sans-serif;
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: .85rem 1.75rem;
  border-radius: var(--radius);
  transition: var(--transition);
  white-space: nowrap;
}
.btn-gold {
  background: var(--gold);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(184,150,90,.35);
}
.btn-gold:hover  { background: var(--gold-dim); box-shadow: 0 6px 20px rgba(184,150,90,.45); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.4);
}
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--navy); background: var(--navy-pale); }
.btn-full { width: 100%; justify-content: center; }

/* Section header */
.section-hd {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}
.section-hd p { font-size: 1.05rem; margin-top: .75rem; }

/* Checklist */
.check-list {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .65rem;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .95rem;
  color: var(--text-mid);
}
.check-list li::before {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: .75rem;
  font-weight: 700;
  margin-top: .15rem;
}
.check-list.positive li::before { content: "✓"; background: rgba(28,58,94,.1); color: var(--navy); }
.check-list.negative li::before { content: "✕"; background: rgba(220,53,69,.1); color: #DC3545; }

/* Fade-in animation (driven by JS IntersectionObserver) */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ---- Navigation --------------------------------------------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition), border-color var(--transition);
}
#navbar.scrolled {
  box-shadow: var(--shadow-sm);
  border-color: transparent;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(1160px, 100% - 48px);
  margin-inline: auto;
}

.nav-logo img { transition: opacity var(--transition); }

@media (min-width: 769px) {
  .nav-logo img { height: 58px; width: auto; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: 'Montserrat', sans-serif;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-mid);
  transition: color var(--transition);
}
.nav-link:hover { color: var(--navy); }

.nav-cta {
  padding: .6rem 1.4rem;
  border-radius: var(--radius);
  background: var(--gold);
  border: 1.5px solid transparent;
  color: var(--white) !important;
  box-shadow: 0 3px 10px rgba(184,150,90,.3);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav-cta:hover { background: var(--gold-dim); box-shadow: 0 4px 14px rgba(184,150,90,.45); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero ---------------------------------------------------- */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-mid) 100%);
  z-index: 0;
}
.hero-backdrop::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 50%, rgba(184,150,90,.12) 0%, transparent 70%);
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: calc(var(--nav-h) + 3rem);
  padding-bottom: 5rem;
}

.hero-copy { max-width: 560px; }

.hero-copy h1 {
  color: var(--white);
  margin-block: .5rem 1.25rem;
}
.hero-copy h1 em { font-style: normal; }
.text-gold { color: var(--gold); }

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Phone mockup (hero visual) */
.hero-visual {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.phone-frame {
  position: relative;
  animation: floatCard 5s ease-in-out infinite;
  filter: drop-shadow(0 30px 50px rgba(0,0,0,.5)) drop-shadow(0 8px 16px rgba(0,0,0,.3));
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0) rotate(1.5deg); }
  50%       { transform: translateY(-10px) rotate(1.5deg); }
}

.hero-phone {
  display: block;
  width: min(280px, 100%);
  border-radius: 40px;
  border: 1px solid rgba(255,255,255,.15);
}

/* Scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  animation: bounce 2.4s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(5px); }
}

/* ---- Problem / Solution ------------------------------------- */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}
.split-panel h2 { margin-block: .5rem 1rem; }
.split-panel:first-child {
  padding-right: 3rem;
  border-right: 1px solid var(--border);
}

/* ---- Features ----------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid transparent;
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-top-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  border-top-color: var(--gold);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-icon {
  width: 48px; height: 48px;
  background: var(--navy-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--navy);
  transition: background var(--transition);
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-card:hover .feature-icon { background: var(--navy); color: var(--white); }

.feature-card h3 { margin-bottom: .6rem; }
.feature-card p  { font-size: .93rem; }

/* ---- How It Works ------------------------------------------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.step { position: relative; }

.step-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--navy-pale);
  line-height: 1;
  margin-bottom: .75rem;
  letter-spacing: -.02em;
  transition: color var(--transition);
}
.step:hover .step-num { color: rgba(184,150,90,.25); }

.step-line {
  position: absolute;
  top: 1.5rem;
  right: -1rem;
  width: calc(100% - 3rem);
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
  pointer-events: none;
}

.step h3 { margin-bottom: .6rem; }
.step p  { font-size: .93rem; }

/* ---- About -------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-copy h2  { color: var(--white); margin-block: .5rem 1rem; }
.about-copy p   { margin-bottom: 1rem; }

.about-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.12);
}
.about-val {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gold-light);
  margin-bottom: .2rem;
}
.about-lbl {
  display: block;
  font-size: .75rem;
  color: rgba(255,255,255,.4);
  letter-spacing: .05em;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
}

.values-stack { display: flex; flex-direction: column; gap: 1.25rem; }

.value-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: background var(--transition);
}
.value-card:hover { background: rgba(255,255,255,.08); }

.value-icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  color: var(--gold);
  margin-top: .15rem;
}
.value-icon svg { width: 100%; height: 100%; }
.value-card h4  { color: var(--white); margin-bottom: .35rem; }
.value-card p   { font-size: .88rem; color: rgba(255,255,255,.5); }

/* ---- Contact ------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-copy h2 { margin-block: .5rem 1rem; }

.contact-details { display: flex; flex-direction: column; gap: .9rem; margin-top: 2rem; }
.contact-detail  {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .92rem;
  color: var(--text-mid);
}
.contact-detail svg { flex-shrink: 0; color: var(--gold); margin-top: .15rem; }

/* Form */
.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.contact-form { display: flex; flex-direction: column; gap: 1.1rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: .4rem; }

label {
  font-family: 'Montserrat', sans-serif;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--navy-dark);
}
.optional {
  font-weight: 400;
  color: var(--text-light);
  font-style: italic;
  letter-spacing: 0;
}

input, textarea {
  font-family: 'Inter', sans-serif;
  font-size: .9rem;
  padding: .75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}
input::placeholder, textarea::placeholder { color: var(--silver); }
input:focus, textarea:focus {
  border-color: var(--navy-mid);
  box-shadow: 0 0 0 3px rgba(28,58,94,.1);
}
input.error, textarea.error {
  border-color: #DC3545;
  box-shadow: 0 0 0 3px rgba(220,53,69,.1);
}
.form-error {
  font-size: .85rem;
  color: #DC3545;
  margin-top: .5rem;
  text-align: center;
}

/* Form success state */
.form-success {
  text-align: center;
  padding: 2rem;
}
.success-check {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(28,58,94,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: var(--navy);
}
.success-check svg { width: 28px; height: 28px; }
.form-success h3 { margin-bottom: .5rem; }
.form-success p  { font-size: .93rem; }

/* ---- Footer -------------------------------------------------- */
#footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,.55);
  font-size: .88rem;
}

.footer-body {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  padding-block: 4rem;
}

.footer-brand {
  max-width: 280px;
}
.footer-brand img { margin-bottom: 1rem; }
.footer-brand p  { font-size: .875rem; color: rgba(255,255,255,.45); line-height: 1.6; }

.footer-nav { display: flex; gap: 4rem; }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.footer-col h5 {
  color: rgba(255,255,255,.4);
  margin-bottom: .25rem;
  font-size: .72rem;
  letter-spacing: .1em;
}
.footer-col a {
  color: rgba(255,255,255,.55);
  font-size: .88rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }

.footer-bar {
  border-top: 1px solid rgba(255,255,255,.07);
  padding-block: 1.5rem;
  font-size: .78rem;
  color: rgba(255,255,255,.3);
}

/* ---- Responsive ---------------------------------------------- */
@media (max-width: 1024px) {
  .hero-layout   { grid-template-columns: 1fr; text-align: center; }
  .hero-copy     { max-width: none; }
  .hero-sub      { max-width: none; }
  .hero-actions  { justify-content: center; }
  .hero-visual   { justify-content: center; }
  .hero-phone    { width: min(320px, 80vw); }

  .split-grid    { grid-template-columns: 1fr; gap: 3rem; }
  .split-panel:first-child { padding-right: 0; border-right: none; border-bottom: 1px solid var(--border); padding-bottom: 3rem; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid    { grid-template-columns: 1fr; gap: 2.5rem; }
  .step-line     { display: none; }
  .about-grid    { grid-template-columns: 1fr; gap: 3rem; }
  .contact-grid  { grid-template-columns: 1fr; gap: 3rem; }
  .footer-body   { flex-direction: column; gap: 2.5rem; }
  .footer-brand  { max-width: none; }
}

@media (max-width: 768px) {
  :root { --section-gap: 64px; }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    padding: 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links li { display: block; }
  .nav-link { display: block; color: var(--text) !important; padding: .75rem 1rem; border-radius: var(--radius); }
  .nav-link:hover { background: var(--navy-pale); }
  .nav-cta {
    margin-top: .75rem;
    background: var(--gold) !important;
    color: var(--white) !important;
    border-color: transparent !important;
    text-align: center;
    padding: .85rem 1rem;
    box-shadow: none;
  }

  .nav-toggle { display: flex; }

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

  .about-stats { flex-direction: column; gap: 1.5rem; }

  .form-row { grid-template-columns: 1fr; }

  .footer-nav { flex-direction: column; gap: 2rem; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; text-align: center; }
  .btn { justify-content: center; }
  .contact-form-wrap { padding: 1.5rem; }
}