/* styles.css — Roedia.ai shared design system */
/* Imported by all pages. Page-specific styles stay inline. */

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

/* LIGHT THEME (default) */
:root, [data-theme="light"]{
  --bg:#f8f9fc;--bg-s:#f0f1f5;--bg-t:#e8e9ef;--bg-card:rgba(255,255,255,.75);
  --ink:#1a1b2e;--ink-s:#4a4b62;--ink-t:#7a7b92;
  --cyan:#2563eb;--cyan-dim:rgba(37,99,235,.06);--cyan-mid:rgba(37,99,235,.12);--cyan-glow:rgba(37,99,235,.2);
  --purple:#3b82f6;--purple-dim:rgba(59,130,246,.06);--purple-mid:rgba(59,130,246,.12);
  --green:#2563eb;--green-dim:rgba(37,99,235,.06);
  --border:rgba(0,0,0,.06);--border-h:rgba(0,0,0,.1);--border-glass:rgba(0,0,0,.06);
  --nav-bg:rgba(248,249,252,.85);--nav-border:rgba(0,0,0,.06);
  --menu-bg:rgba(248,249,252,.97);
  --card-shadow:0 2px 16px rgba(0,0,0,.04);--card-hover-shadow:0 8px 32px rgba(0,0,0,.08);
  --radius:16px;--radius-sm:12px;
  --ff:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:'JetBrains Mono',monospace;
  --max:1180px;--gutter:clamp(24px,5vw,80px);
  --whatsapp:#25d366;
  --transition:cubic-bezier(.23,1,.32,1);
  --grain-opacity:.015;
  --gradient-angle:135deg;
}

/* DARK THEME */
[data-theme="dark"]{
  --bg:#0a0b10;--bg-s:#0e0f16;--bg-t:#14151e;--bg-card:rgba(18,19,28,.55);
  --ink:#e8e9ed;--ink-s:#9a9caa;--ink-t:#6b6d7b;
  --cyan:#2563eb;--cyan-dim:rgba(37,99,235,.08);--cyan-mid:rgba(37,99,235,.15);--cyan-glow:rgba(37,99,235,.25);
  --purple:#3b82f6;--purple-dim:rgba(59,130,246,.08);--purple-mid:rgba(59,130,246,.15);
  --green:#2563eb;--green-dim:rgba(37,99,235,.08);
  --border:rgba(255,255,255,.06);--border-h:rgba(255,255,255,.12);--border-glass:rgba(255,255,255,.08);
  --nav-bg:rgba(10,11,16,.82);--nav-border:rgba(255,255,255,.06);
  --menu-bg:rgba(10,11,16,.97);
  --card-shadow:0 2px 16px rgba(0,0,0,.2);--card-hover-shadow:0 8px 32px rgba(0,0,0,.3);
  --grain-opacity:.03;
}

/* -- BASE TYPOGRAPHY -- */
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--ff);color:var(--ink);background:var(--bg);line-height:1.6;overflow-x:hidden}
::selection{background:var(--cyan);color:var(--bg)}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* -- TEXTURE OVERLAY -- */
body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");pointer-events:none;z-index:0;opacity:var(--grain-opacity);transition:opacity .5s}

/* -- TRANSITIONS -- */
body,nav,.mobile-menu,section.alt{transition:background .4s,color .4s,border-color .4s}

/* -- GLASS UTILITY -- */
.glass{background:var(--bg-card);backdrop-filter:blur(20px) saturate(150%);-webkit-backdrop-filter:blur(20px) saturate(150%);border:1px solid var(--border-glass)}

/* -- NAV -- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:0 var(--gutter);background:var(--nav-bg);backdrop-filter:saturate(180%) blur(24px);-webkit-backdrop-filter:saturate(180%) blur(24px);border-bottom:1px solid var(--nav-border)}
.nav-inner{max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-weight:700;font-size:1.25rem;letter-spacing:-.02em;cursor:pointer}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--purple));display:flex;align-items:center;justify-content:center;font-size:.875rem;color:var(--bg);font-weight:700}
.logo-text{color:var(--ink)}
.logo-dot{color:var(--cyan)}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{font-size:.8125rem;font-weight:500;color:var(--ink-s);transition:color .2s;letter-spacing:.01em;cursor:pointer}
.nav-links a:hover{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{font-size:.8125rem;font-weight:600;color:var(--bg);background:var(--green);padding:8px 20px;border-radius:8px;transition:all .25s var(--transition);cursor:pointer}
.nav-cta:hover{background:#3b82f6;transform:translateY(-1px);box-shadow:0 4px 16px rgba(37,99,235,.3)}
.lang-toggle{font-size:.6875rem;font-weight:500;letter-spacing:.04em;color:var(--ink-t);cursor:pointer;padding:5px 12px;border-radius:8px;border:1px solid var(--border);background:transparent;transition:all .2s;font-family:var(--mono)}
.lang-toggle:hover{border-color:var(--ink-s);color:var(--ink)}
.lang-toggle .active-lang{color:var(--cyan);font-weight:600}
.theme-btn{background:none;border:1px solid var(--border);width:36px;height:36px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--ink-t);transition:all .2s}
.theme-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.theme-btn svg{width:16px;height:16px}
[data-theme="light"] .theme-icon-sun{display:none}
[data-theme="light"] .theme-icon-moon{display:block}
[data-theme="dark"] .theme-icon-sun{display:block}
[data-theme="dark"] .theme-icon-moon{display:none}
.theme-icon-moon{display:none}
.nav-burger{display:none;background:none;border:none;cursor:pointer;padding:4px;color:var(--ink)}
.nav-burger span{display:block;width:22px;height:2px;background:currentColor;margin:5px 0;transition:all .3s;border-radius:2px}
.nav-burger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-menu{display:none;position:fixed;inset:0;top:64px;background:var(--menu-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);z-index:99;padding:40px var(--gutter);flex-direction:column;gap:24px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:1.25rem;color:var(--ink);font-weight:500;cursor:pointer}

/* -- SECTIONS -- */
section{position:relative;padding:clamp(80px,12vw,120px) var(--gutter);z-index:1}
.si{max-width:var(--max);margin:0 auto}
.section-tag{font-family:var(--mono);font-size:.625rem;font-weight:500;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-t);margin-bottom:20px;display:flex;align-items:center;gap:10px}
.section-tag::before{content:'//';color:var(--cyan);font-weight:700}
.section-title{font-size:clamp(1.75rem,3.5vw,2.75rem);font-weight:800;line-height:1.08;letter-spacing:-.025em;max-width:18ch}
.section-title .gradient,.hero h1 .gradient{background:linear-gradient(var(--gradient-angle),var(--cyan) 20%,var(--purple) 80%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-desc{margin-top:14px;font-size:1rem;font-weight:400;color:var(--ink-s);max-width:520px;line-height:1.7}
section.alt{background:var(--bg-s)}

/* -- SERVICE CARDS -- */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:56px}
.service-card{padding:28px 24px;border-radius:var(--radius-sm);background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);transition:all .3s var(--transition);position:relative;overflow:hidden;box-shadow:var(--card-shadow)}
[data-theme="light"] .service-card{background:rgba(255,255,255,.85)}
.service-card:hover{border-color:rgba(37,99,235,.2);transform:translateY(-3px);box-shadow:var(--card-hover-shadow)}
.service-card::before{content:'';position:absolute;top:0;left:0;bottom:0;width:2px;background:var(--cyan);opacity:0;transition:opacity .3s}
.service-card:hover::before{opacity:1}
.service-icon{width:44px;height:44px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.25rem}
.service-icon.cyan{background:var(--cyan-dim);color:var(--cyan)}
.service-icon.purple{background:var(--purple-dim);color:var(--purple)}
.service-icon.green{background:var(--green-dim);color:var(--green)}
.service-name{font-size:1.0625rem;font-weight:700;margin-bottom:8px}
.service-desc{font-size:.875rem;color:var(--ink-s);line-height:1.65}
.service-tag{margin-top:16px;font-family:var(--mono);font-size:.6875rem;color:var(--ink-t);display:flex;align-items:center;gap:6px}
.service-tag::before{content:'';width:4px;height:4px;border-radius:50%;background:var(--cyan)}

/* -- PRICING CARDS -- */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:48px}
.price-card{padding:28px 24px;border-radius:var(--radius-sm);background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);display:flex;flex-direction:column;transition:all .3s var(--transition);position:relative;overflow:hidden;box-shadow:var(--card-shadow)}
[data-theme="light"] .price-card{background:rgba(255,255,255,.9)}
.price-card:hover{border-color:var(--cyan)}
.price-card .popular-label{display:none;margin-top:auto;padding-top:16px;text-align:center;font-family:var(--mono);font-size:.6875rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan)}
.price-card.popular .popular-label{display:block}
.price-amount{font-size:2.25rem;font-weight:800;line-height:1;margin-bottom:4px;color:var(--ink)}
.price-amount .currency{font-size:1rem;font-weight:500;color:var(--ink-s);vertical-align:super}
.price-desc{font-size:.8125rem;color:var(--ink-s);line-height:1.55;margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.price-features{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:24px;flex:1}
.price-features li{font-size:.84rem;color:var(--ink);display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.price-features li strong{color:var(--ink);font-weight:700}
.price-features li svg{flex-shrink:0;color:var(--green);margin-top:3px}
.price-name{font-family:var(--mono);font-size:.6875rem;font-weight:500;text-transform:uppercase;letter-spacing:.1em;color:var(--ink);margin-bottom:8px}
.price-period{font-size:.75rem;color:var(--ink-s);margin-bottom:20px}
.price-card .btn{width:100%;justify-content:center;font-size:.8125rem;padding:10px 20px}

/* -- ADD-ON CARDS -- */
.addons-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px}
.addon-card{padding:28px 24px;border-radius:var(--radius-sm);background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);transition:all .3s var(--transition);position:relative;overflow:hidden}
.addon-card:hover{border-color:rgba(37,99,235,.2);transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,.2)}
.addon-card::before{content:'';position:absolute;top:0;left:0;bottom:0;width:2px;background:var(--purple);opacity:.5}
.addon-price{font-family:var(--mono);font-size:.625rem;color:var(--cyan);letter-spacing:.1em;margin-bottom:12px}
.addon-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.addon-card p{font-size:.875rem;color:var(--ink-s);line-height:1.6}

/* -- BLOG CARDS -- */
.blog-grid{display:flex;flex-direction:column;gap:12px}
.blog-card{padding:16px 20px;border-radius:var(--radius-sm);background:transparent;border-left:2px solid var(--border);transition:all .25s var(--transition);display:block;cursor:pointer}
.blog-card:hover{border-left-color:var(--cyan);padding-left:24px;background:rgba(37,99,235,.03)}
.blog-tag{font-family:var(--mono);font-size:.5625rem;color:var(--ink-t);text-transform:uppercase;letter-spacing:.1em;margin-bottom:4px}
.blog-title{font-size:.875rem;font-weight:600;line-height:1.4}
.blog-excerpt{font-size:.8125rem;color:var(--ink-s);margin-top:2px;line-height:1.5}

/* -- BUTTONS -- */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;font-weight:600;padding:12px 28px;border-radius:var(--radius-sm);transition:all .25s var(--transition);font-family:var(--ff);cursor:pointer;border:none;letter-spacing:.01em}
.btn-cyan{background:var(--cyan);color:var(--bg)}
.btn-cyan:hover{background:#3b82f6;transform:translateY(-2px);box-shadow:0 6px 24px rgba(37,99,235,.2)}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:#3b82f6;transform:translateY(-2px);box-shadow:0 6px 24px rgba(37,99,235,.2)}
.btn-outline{color:var(--ink-s);border:1px solid var(--border-h);background:transparent}
.btn-outline:hover{border-color:var(--ink-s);color:var(--ink);transform:translateY(-1px)}
.btn-wa{background:var(--whatsapp);color:#fff}
.btn-wa:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 6px 24px rgba(37,211,102,.2)}

/* -- FOOTER (3-column) -- */
footer{border-top:1px solid var(--border);padding:40px var(--gutter) 24px;z-index:1;position:relative}
.footer-inner{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:1fr 2fr 1fr;gap:32px;align-items:start}
.footer-brand{display:flex;flex-direction:column;gap:8px}
.footer-brand .logo-mark{width:24px;height:24px;font-size:.625rem}
.footer-brand span{font-family:var(--mono);font-weight:700;font-size:.875rem}
.footer-tagline{font-size:.75rem;color:var(--ink-t);font-family:var(--ff);font-weight:400}
.footer-nav{display:flex;gap:48px;justify-content:center}
.footer-links{display:flex;flex-direction:column;gap:8px;font-size:.8125rem}
.footer-links a{color:var(--ink-s);transition:color .2s;cursor:pointer}
.footer-links a:hover{color:var(--ink)}
.footer-section-label{font-family:var(--mono);font-size:.625rem;font-weight:500;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-t);margin-bottom:4px}
.footer-social{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.footer-social-links{display:flex;gap:16px}
.footer-social-links a{font-family:var(--mono);font-size:.75rem;color:var(--ink-t);transition:color .2s}
.footer-social-links a:hover{color:var(--cyan)}
.footer-copy{font-size:.6875rem;color:var(--ink-t);font-family:var(--mono)}
.footer-legal{max-width:var(--max);margin:16px auto 0;padding-top:16px;border-top:1px solid var(--border);text-align:center}
.footer-legal a{font-size:.75rem;color:var(--ink-t);transition:color .2s}
.footer-legal a:hover{color:var(--ink)}

/* -- WHATSAPP FLOAT -- */
.wa-float{position:fixed;bottom:24px;right:24px;z-index:998;width:56px;height:56px;border-radius:50%;background:var(--whatsapp);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 24px rgba(37,211,102,.35);transition:transform .25s var(--transition);animation:wa-pulse 3s infinite;cursor:pointer}
.wa-float:hover{transform:scale(1.1)}
.wa-float svg{width:28px;height:28px;fill:#fff}

/* -- ANIMATIONS -- */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
@keyframes wa-pulse{0%,100%{box-shadow:0 4px 24px rgba(37,211,102,.35)}50%{box-shadow:0 4px 36px rgba(37,211,102,.5)}}
.reveal{opacity:0;transform:translateY(24px);transition:all .7s var(--transition)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* -- STAGGERED REVEAL -- */
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}
.reveal-d4{transition-delay:.4s}

/* -- TILT ON CARD HOVER -- */
.service-card:hover{transform:perspective(1000px) rotateX(2deg) rotateY(-2deg) translateY(-4px)}
.price-card:hover{transform:perspective(1000px) rotateX(2deg) rotateY(-2deg) translateY(-4px);box-shadow:0 8px 32px rgba(37,99,235,.15)}
.addon-card:hover{transform:perspective(1000px) rotateX(2deg) rotateY(-2deg) translateY(-4px)}

/* -- HOVER GLOW ON ALL PRICING CARDS -- */

/* -- DOT GRID PATTERN ON ALT SECTIONS -- */
section.alt::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle,var(--border) 1px,transparent 1px);background-size:24px 24px;opacity:.3;pointer-events:none;z-index:0}

/* -- FLOATING GEOMETRIC SHAPES -- */
#services::after,#courses::after{content:'';position:absolute;width:12px;height:12px;border-radius:50%;background:var(--cyan-mid);top:15%;right:8%;animation:floatShape 8s ease-in-out infinite;pointer-events:none;z-index:0}
#blog::after{content:'';position:absolute;width:10px;height:10px;background:var(--purple-mid);top:20%;left:6%;transform:rotate(45deg);animation:floatShape 10s ease-in-out infinite reverse;pointer-events:none;z-index:0}
#about::after{content:'';position:absolute;width:14px;height:14px;border:2px solid var(--cyan-mid);border-radius:50%;bottom:15%;right:10%;animation:floatShape 12s ease-in-out infinite;pointer-events:none;z-index:0}
@keyframes floatShape{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-20px) rotate(180deg)}}

/* -- prefers-reduced-motion -- */
@media(prefers-reduced-motion:reduce){
  .wa-float{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
  #services::after,#courses::after,#blog::after,#about::after{animation:none}
  @keyframes floatShape{0%,100%{transform:none}}
}

/* -- RESPONSIVE 900px -- */
@media(max-width:900px){
  .services-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr 1fr}
  .addons-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-cta.desktop{display:none}
  .lang-toggle.desktop{display:none}
  .nav-burger{display:block}
  .footer-inner{grid-template-columns:1fr;text-align:center;gap:24px}
  .footer-nav{justify-content:center;gap:32px}
  .footer-social{align-items:center}
  /* disable tilt on touch devices */
  .service-card:hover,.price-card:hover,.addon-card:hover{transform:translateY(-3px)}
  /* floating shapes smaller on mobile */
  #services::after,#courses::after,#blog::after,#about::after{width:40px;height:40px;font-size:28px}
  .section-title{font-size:clamp(1.5rem,5vw,2rem)}
}

/* -- RESPONSIVE 600px -- */
@media(max-width:600px){
  .pricing-grid{grid-template-columns:1fr}
  .nav-inner{height:56px}
  .mobile-menu{top:56px}
  section{padding:clamp(60px,10vw,80px) 20px}
  .wa-float{width:48px;height:48px;bottom:16px;right:16px}
  .wa-float svg{width:24px;height:24px}
  .price-card{padding:24px 20px}
  .service-card{padding:24px 20px}
  footer{padding:24px 20px}
}