/* ===== PLAIT — Design System v3 ===== */
/* Style reference: sanalabs.com — editorial, clean, minimal B2B SaaS */

@import url('https://fonts.googleapis.com/css2?family=Funnel+Display:wght@300;400;500;600;700;800&family=Inter:ital,opsz,wght@0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;1,14..32,400&display=swap');

/* ===== TOKENS ===== */
:root {
  --purple:        #6A14FF;
  --purple-dark:   #400C99;
  --purple-mid:    #8B47FF;
  --purple-light:  #C9A9FF;
  --purple-faint:  #F4EEFF;
  --purple-subtle: #FAF5FF;
  --coral:         #FB756B;
  --warm:          #FB9D6B;
  --gold:          #FBDD6B;
  --black:         #0D0D0D;
  --gray-900:      #111111;
  --gray-800:      #1A1A1A;
  --gray-700:      #2E2E2E;
  --gray-600:      #444444;
  --gray-500:      #666666;
  --gray-400:      #888888;
  --gray-300:      #AAAAAA;
  --gray-200:      #D4D4D4;
  --gray-150:      #E5E5E5;
  --gray-100:      #F0F0F0;
  --gray-50:       #F7F7F7;
  --white:         #FFFFFF;
  --border:        rgba(0,0,0,0.08);
  --border-mid:    rgba(0,0,0,0.12);
  --border-strong: rgba(0,0,0,0.18);
  --font-display:  'Funnel Display', sans-serif;
  --font-body:     'Inter', sans-serif;
  --r-xs:  4px; --r-sm: 6px; --r-md: 10px; --r-lg: 16px; --r-xl: 24px; --r-2xl: 32px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.06), 0 16px 48px rgba(0,0,0,0.10);
  --shadow-purple: 0 8px 32px rgba(106,20,255,0.18);
  --section-pad: 96px;
  --section-pad-sm: 64px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--gray-900); background: var(--white); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }
ul, ol { list-style: none; }

h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 600; line-height: 1.1; letter-spacing: -0.025em; color: var(--black); }

.display-xl  { font-size: clamp(42px, 5.5vw, 76px); font-weight: 700; line-height: 1.04; letter-spacing: -0.03em; }
.display-lg  { font-size: clamp(32px, 4vw, 56px);   font-weight: 600; line-height: 1.08; letter-spacing: -0.025em; }
.display-md  { font-size: clamp(24px, 2.8vw, 38px); font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; }
.display-sm  { font-size: clamp(20px, 2.2vw, 28px); font-weight: 600; line-height: 1.2;  letter-spacing: -0.018em; }

.body-xl   { font-size: 20px; line-height: 1.65; color: var(--gray-500); }
.body-lg   { font-size: 18px; line-height: 1.65; color: var(--gray-500); }
.body-md   { font-size: 16px; line-height: 1.65; color: var(--gray-500); }
.body-sm   { font-size: 14px; line-height: 1.6;  color: var(--gray-500); }
.body-xs   { font-size: 13px; line-height: 1.55; color: var(--gray-400); }

.label      { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--purple); }
.label-gray { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-400); }

.text-purple { color: var(--purple); }
.text-gray   { color: var(--gray-500); }
.text-white  { color: var(--white) !important; }
.text-white-dim { color: rgba(255,255,255,0.6) !important; }

.text-gradient {
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-mid) 50%, var(--coral) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.container        { max-width: 1120px; margin: 0 auto; padding: 0 48px; }
.container-wide   { max-width: 1320px; margin: 0 auto; padding: 0 48px; }
.container-narrow { max-width: 680px;  margin: 0 auto; padding: 0 48px; }

.section    { padding: var(--section-pad) 0; }
.section-sm { padding: var(--section-pad-sm) 0; }
.section-xs { padding: 40px 0; }
.divider    { height: 1px; background: var(--border); }

/* NAV */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 200; background: rgba(255,255,255,0.92); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.nav-logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; text-decoration: none; }
.nav-logo-icon { width: 26px; height: 26px; border-radius: 6px; overflow: hidden; flex-shrink: 0; }
.nav-logo-icon img { width: 100%; height: 100%; object-fit: cover; }
.nav-wordmark { font-family: var(--font-display); font-size: 17px; font-weight: 700; color: var(--black); letter-spacing: -0.02em; }
.nav-links { display: flex; align-items: center; gap: 0; flex: 1; margin-left: 16px; }
.nav-link { font-size: 14px; font-weight: 450; color: var(--gray-600); padding: 6px 14px; border-radius: var(--r-sm); transition: color 0.15s, background 0.15s; letter-spacing: -0.01em; }
.nav-link:hover { color: var(--black); background: var(--gray-50); }
.nav-link.active { color: var(--black); }
.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.hamburger { display: none; flex-direction: column; gap: 4.5px; cursor: pointer; padding: 6px; margin-left: 4px; }
.hamburger span { display: block; width: 20px; height: 1.5px; background: var(--black); border-radius: 2px; transition: all 0.25s; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-body); font-size: 14px; font-weight: 500; padding: 8px 18px; border-radius: var(--r-sm); transition: all 0.15s ease; white-space: nowrap; line-height: 1; letter-spacing: -0.01em; text-decoration: none; }
.btn-primary { background: var(--black); color: var(--white); border: 1px solid var(--black); }
.btn-primary:hover { background: var(--gray-700); border-color: var(--gray-700); }
.btn-purple { background: var(--purple); color: var(--white); border: 1px solid var(--purple); }
.btn-purple:hover { background: var(--purple-dark); border-color: var(--purple-dark); }
.btn-outline { background: transparent; color: var(--gray-700); border: 1px solid var(--border-mid); }
.btn-outline:hover { background: var(--gray-50); border-color: var(--border-strong); color: var(--black); }
.btn-ghost { background: transparent; color: var(--gray-600); border: none; padding: 8px 14px; }
.btn-ghost:hover { color: var(--black); background: var(--gray-50); }
.btn-white { background: var(--white); color: var(--black); border: 1px solid transparent; }
.btn-white:hover { background: var(--gray-50); }
.btn-ghost-white { background: transparent; color: rgba(255,255,255,0.7); border: 1px solid rgba(255,255,255,0.2); }
.btn-ghost-white:hover { color: var(--white); border-color: rgba(255,255,255,0.45); }
.btn-lg { font-size: 15px; padding: 12px 24px; border-radius: var(--r-md); }
.btn-sm { font-size: 13px; padding: 6px 13px; }

/* CARDS */
.card { background: var(--white); border: 1px solid var(--border); border-radius: var(--r-xl); padding: 32px; transition: box-shadow 0.2s, border-color 0.2s; }
.card:hover { box-shadow: var(--shadow-md); border-color: var(--border-mid); }
.card-sm { padding: 24px; border-radius: var(--r-lg); }
.card-purple { background: var(--purple-faint); border-color: rgba(106,20,255,0.12); }
.card-dark { background: var(--gray-900); border-color: rgba(255,255,255,0.06); color: var(--white); }

/* TAGS */
.tag { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 500; padding: 4px 10px; border-radius: 100px; background: var(--gray-100); color: var(--gray-600); border: 1px solid var(--border); letter-spacing: -0.01em; }
.tag-purple { background: var(--purple-faint); color: var(--purple); border-color: rgba(106,20,255,0.15); }
.tag-black { background: var(--black); color: var(--white); border-color: var(--black); }
.tag-dot::before { content: ''; display: block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: pulse-dot 2s ease infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.75); } }

/* SECTION HEADERS */
.section-header { margin-bottom: 48px; }
.section-header.center { text-align: center; }
.section-header .eyebrow { display: block; margin-bottom: 16px; }
.section-header h2 { margin-bottom: 16px; }
.section-header p { max-width: 560px; }
.section-header.center p { margin-left: auto; margin-right: auto; }

/* STATS */
.stat-value { font-family: var(--font-display); font-size: clamp(36px, 4vw, 56px); font-weight: 700; letter-spacing: -0.035em; color: var(--black); line-height: 1; }
.stat-label { font-size: 14px; color: var(--gray-500); margin-top: 8px; line-height: 1.5; }

/* GRID */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* FORMS */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 500; color: var(--gray-700); letter-spacing: -0.01em; }
.form-input, .form-textarea, .form-select { font-family: var(--font-body); font-size: 15px; color: var(--black); background: var(--white); border: 1px solid var(--border-mid); border-radius: var(--r-md); padding: 11px 14px; transition: border-color 0.15s, box-shadow 0.15s; outline: none; width: 100%; -webkit-appearance: none; }
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--purple); box-shadow: 0 0 0 3px rgba(106,20,255,0.1); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--gray-300); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; cursor: pointer; }
.form-error { font-size: 12px; color: #D32F2F; display: none; }
.form-group.has-error .form-input, .form-group.has-error .form-textarea, .form-group.has-error .form-select { border-color: #D32F2F; box-shadow: 0 0 0 3px rgba(211,47,47,0.08); }
.form-group.has-error .form-error { display: block; }

/* ANIMATIONS */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* PROGRESS BAR */
.progress-bar { position: fixed; top: 0; left: 0; height: 2px; background: var(--purple); width: 0%; z-index: 999; transition: width 0.1s linear; }

/* FOOTER */
footer { border-top: 1px solid var(--border); padding: 40px 0; background: var(--white); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-logo { display: flex; align-items: center; gap: 7px; }
.footer-logo .nav-logo-icon { width: 22px; height: 22px; border-radius: 5px; }
.footer-wordmark { font-family: var(--font-display); font-size: 15px; font-weight: 700; color: var(--black); letter-spacing: -0.02em; }
.footer-copy { font-size: 13px; color: var(--gray-400); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 13px; color: var(--gray-400); transition: color 0.15s; }
.footer-links a:hover { color: var(--black); }

/* MOBILE NAV */
.nav-mobile-overlay { display: none; position: fixed; inset: 60px 0 0 0; background: var(--white); z-index: 199; padding: 24px 24px 32px; border-top: 1px solid var(--border); flex-direction: column; gap: 4px; }
.nav-mobile-overlay.open { display: flex; }
.nav-mobile-overlay .nav-link { font-size: 16px; padding: 12px 16px; border-radius: var(--r-md); }
.nav-mobile-cta { margin-top: 16px; }
.nav-mobile-cta .btn { width: 100%; justify-content: center; padding: 13px; font-size: 15px; }

/* RESPONSIVE */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .container, .container-wide, .container-narrow { padding: 0 24px; }
  :root { --section-pad: 72px; --section-pad-sm: 48px; }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  :root { --section-pad: 56px; --section-pad-sm: 40px; }
  .display-xl { font-size: 38px; }
  .display-lg { font-size: 30px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-links { justify-content: center; }
}