/* OptikDesk — Stylesheet */
:root {
  --blue:        #0369A1;
  --blue-dark:   #024D78;
  --blue-light:  #0284C7;
  --blue-pale:   #E0F2FE;
  --teal:        #0D9488;
  --teal-dark:   #0A7368;
  --teal-pale:   #CCFBF1;
  --white:       #ffffff;
  --gray-50:     #F0F9FF;
  --gray-100:    #F3F4F6;
  --gray-200:    #E5E7EB;
  --gray-300:    #D1D5DB;
  --gray-400:    #9CA3AF;
  --gray-500:    #6B7280;
  --gray-700:    #374151;
  --gray-900:    #111827;
  --font:        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius:      10px;
  --radius-lg:   16px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:   0 4px 6px -1px rgba(0,0,0,.10), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg:   0 10px 15px -3px rgba(0,0,0,.10), 0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-xl:   0 20px 25px -5px rgba(0,0,0,.10), 0 10px 10px -5px rgba(0,0,0,.04);
  --transition:  all 0.25s ease;
  --max-width:   1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);color:var(--gray-900);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;line-height:1.15;letter-spacing:-0.02em}
h2{font-size:clamp(1.6rem,3.5vw,2.25rem);font-weight:700;line-height:1.25;letter-spacing:-0.015em}
h3{font-size:1.25rem;font-weight:600;line-height:1.35}
h4{font-size:1.05rem;font-weight:600}
p{color:var(--gray-500);line-height:1.7}
.text-blue{color:var(--blue)}
.text-teal{color:var(--teal)}
.text-white{color:var(--white)}
.text-center{text-align:center}
.container{width:100%;max-width:var(--max-width);margin-inline:auto;padding-inline:clamp(1rem,5vw,2rem)}
.section{padding-block:clamp(3.5rem,8vw,6rem)}
.section-label{display:inline-block;font-size:0.75rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--teal);background:var(--teal-pale);padding:0.3rem 0.8rem;border-radius:99px;margin-bottom:1rem}
.section-title{margin-bottom:1rem}
.section-sub{font-size:1.125rem;max-width:640px;margin-bottom:3rem}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:0.5rem;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:var(--transition);border:2px solid transparent;white-space:nowrap}
.btn-sm{font-size:0.875rem;padding:0.45rem 1rem}
.btn-md{font-size:1rem;padding:0.65rem 1.5rem}
.btn-lg{font-size:1.0625rem;padding:0.8rem 1.75rem}
.btn-primary{background:var(--blue);color:var(--white);border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark)}
.btn-teal{background:var(--teal);color:var(--white);border-color:var(--teal)}
.btn-teal:hover{background:var(--teal-dark);border-color:var(--teal-dark)}
.btn-secondary{background:transparent;color:var(--blue);border-color:var(--blue)}
.btn-secondary:hover{background:var(--blue-pale)}
.btn-secondary-white{background:transparent;color:var(--white);border-color:rgba(255,255,255,0.6)}
.btn-secondary-white:hover{background:rgba(255,255,255,0.1);border-color:var(--white)}
.btn-ghost{background:transparent;color:var(--gray-700);border-color:transparent;padding-inline:0}
.btn-ghost:hover{color:var(--blue)}

/* === Navigation === */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;transition:all 0.3s ease}
.nav.scrolled{background:rgba(255,255,255,0.97);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;gap:2rem}
.nav-logo{display:flex;align-items:center;gap:0.5rem;font-size:1.25rem;font-weight:800;color:var(--white);flex-shrink:0}
.nav.scrolled .nav-logo{color:var(--blue)}
.nav-logo .emoji{font-size:1.5rem}
.nav-links{display:flex;gap:0.25rem;margin-left:auto}
.nav-links a{font-size:0.9375rem;font-weight:500;padding:0.4rem 0.75rem;border-radius:6px;color:rgba(255,255,255,0.85);transition:var(--transition)}
.nav.scrolled .nav-links a{color:var(--gray-700)}
.nav-links a:hover{color:var(--white);background:rgba(255,255,255,0.1)}
.nav.scrolled .nav-links a:hover{color:var(--blue);background:var(--blue-pale)}
.nav-cta{margin-left:1rem}
.nav-hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:0.25rem}
.nav-hamburger span{display:block;width:22px;height:2px;background:var(--white);border-radius:2px;transition:var(--transition)}
.nav.scrolled .nav-hamburger span{background:var(--gray-700)}
.nav-mobile{display:none;flex-direction:column;gap:0.5rem;padding:1rem 1.5rem 1.5rem;border-top:1px solid var(--gray-100)}
.nav-mobile.open{display:flex}
.nav-mobile a{padding:0.6rem 0.5rem;font-size:1rem;color:var(--gray-700);border-radius:6px}
.nav-mobile a:hover{color:var(--blue)}

/* === Subpage nav === */
.subpage-nav{background:var(--blue);padding:0.75rem 0}
.subpage-nav .nav-logo{font-size:1.125rem}
.subpage-nav .nav-inner{justify-content:space-between}

/* === Hero === */
.hero{background:linear-gradient(135deg,var(--blue-dark) 0%,var(--blue) 50%,var(--teal-dark) 100%);padding-top:calc(4rem + 60px);padding-bottom:4rem;color:var(--white);overflow:hidden;position:relative}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.2);border-radius:99px;padding:0.4rem 1rem;font-size:0.8125rem;font-weight:600;color:rgba(255,255,255,0.9);margin-bottom:1.5rem}
.hero-title{color:var(--white);margin-bottom:1rem}
.hero-title .accent{color:var(--teal);position:relative}
.hero-sub{font-size:1.125rem;color:rgba(255,255,255,0.8);line-height:1.7;margin-bottom:2rem;max-width:520px}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2rem}
.hero-trust{display:flex;gap:1.5rem;flex-wrap:wrap}
.trust-item{font-size:0.875rem;color:rgba(255,255,255,0.7);display:flex;align-items:center;gap:0.4rem}

/* === Dashboard Mockup === */
.hero-visual{position:relative}
.dashboard-mockup{background:var(--white);border-radius:var(--radius-lg);box-shadow:0 30px 60px rgba(0,0,0,0.3);overflow:hidden;border:1px solid rgba(255,255,255,0.1)}
.dash-titlebar{background:#f0f0f0;padding:0.6rem 1rem;display:flex;align-items:center;gap:0.5rem}
.dash-dot{width:12px;height:12px;border-radius:50%}
.dash-dot.red{background:#ff5f57}
.dash-dot.yellow{background:#ffbd2e}
.dash-dot.green{background:#28c840}
.dash-url{margin-left:auto;background:var(--white);border-radius:4px;padding:0.15rem 0.75rem;font-size:0.75rem;color:var(--gray-500);border:1px solid var(--gray-200)}
.dash-content{padding:1.25rem}
.dash-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}
.dash-header-title{font-size:0.8125rem;font-weight:700;color:var(--gray-900)}
.dash-header-badge{background:#22c55e;color:#fff;font-size:0.65rem;font-weight:700;padding:0.15rem 0.5rem;border-radius:99px;letter-spacing:0.05em}
.dash-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0.75rem;margin-bottom:1rem}
.dash-stat{background:var(--gray-50);border-radius:8px;padding:0.75rem;text-align:center}
.dash-stat-val{font-size:1.25rem;font-weight:800;color:var(--blue);line-height:1}
.dash-stat-label{font-size:0.65rem;color:var(--gray-500);margin-top:0.25rem;font-weight:500}
.dash-table{border-top:1px solid var(--gray-100)}
.dash-row{display:grid;grid-template-columns:2fr 1.5fr 1fr;gap:0.5rem;padding:0.5rem 0;border-bottom:1px solid var(--gray-100);font-size:0.73rem;align-items:center}
.dash-row:last-child{border-bottom:none}
.dash-row-head{font-weight:700;color:var(--gray-700)}
.dash-badge{display:inline-block;padding:0.1rem 0.5rem;border-radius:99px;font-size:0.6rem;font-weight:700}
.dash-badge.ok{background:var(--teal-pale);color:var(--teal-dark)}
.dash-badge.warn{background:#fef3c7;color:#92400e}
.dash-badge.new{background:var(--blue-pale);color:var(--blue-dark)}

/* === Features === */
.features{background:var(--gray-50)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.feature-card{background:var(--white);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--teal));opacity:0;transition:var(--transition)}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.25rem;background:var(--blue-pale)}
.feature-icon.teal{background:var(--teal-pale)}
.feature-title{color:var(--gray-900);margin-bottom:0.5rem;font-size:1.0625rem}
.feature-desc{font-size:0.9375rem;color:var(--gray-500)}
.feature-tags{display:flex;flex-wrap:wrap;gap:0.4rem;margin-top:1rem}
.feature-tag{font-size:0.7rem;font-weight:600;padding:0.2rem 0.6rem;border-radius:99px;background:var(--gray-100);color:var(--gray-600)}
.feature-tag.blue{background:var(--blue-pale);color:var(--blue)}
.feature-tag.teal{background:var(--teal-pale);color:var(--teal)}

/* === Compliance === */
.compliance{background:var(--blue-dark)}
.compliance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:3rem}
.compliance-card{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);border-radius:var(--radius);padding:1.5rem;text-align:center}
.compliance-icon{font-size:2rem;margin-bottom:0.75rem}
.compliance-title{font-size:0.875rem;font-weight:700;color:var(--white);margin-bottom:0.4rem}
.compliance-desc{font-size:0.78rem;color:rgba(255,255,255,0.6);line-height:1.5}

/* === Pricing === */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;max-width:1000px;margin-inline:auto}
.pricing-card{background:var(--white);border:2px solid var(--gray-200);border-radius:var(--radius-lg);padding:2rem;position:relative;transition:var(--transition)}
.pricing-card.featured{border-color:var(--blue);box-shadow:0 0 0 4px rgba(3,105,161,0.1);transform:scale(1.03)}
.pricing-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--blue);color:var(--white);font-size:0.75rem;font-weight:700;padding:0.25rem 1rem;border-radius:99px;white-space:nowrap}
.pricing-name{font-size:1rem;font-weight:700;color:var(--gray-700);margin-bottom:0.25rem}
.pricing-price{font-size:2.5rem;font-weight:800;color:var(--blue);line-height:1}
.pricing-period{font-size:0.875rem;color:var(--gray-500);font-weight:400}
.pricing-desc{font-size:0.875rem;color:var(--gray-500);margin-top:0.5rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--gray-100)}
.pricing-features{display:flex;flex-direction:column;gap:0.6rem;margin-bottom:2rem}
.pricing-feature{display:flex;align-items:flex-start;gap:0.6rem;font-size:0.875rem;color:var(--gray-700)}
.pricing-feature::before{content:'✓';color:var(--teal);font-weight:700;flex-shrink:0;margin-top:0.1rem}

/* === Testimonials === */
.testimonials{background:var(--gray-50)}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.testi-card{background:var(--white);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100)}
.testi-stars{color:#f59e0b;font-size:1.1rem;margin-bottom:0.75rem;letter-spacing:0.1em}
.testi-text{font-size:0.9375rem;color:var(--gray-700);line-height:1.65;font-style:italic;margin-bottom:1rem}
.testi-author{display:flex;align-items:center;gap:0.75rem}
.testi-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--white);font-size:0.875rem;flex-shrink:0}
.testi-name{font-weight:700;font-size:0.875rem;color:var(--gray-900)}
.testi-role{font-size:0.78rem;color:var(--gray-500)}

/* === CTA === */
.cta-section{background:linear-gradient(135deg,var(--blue-dark) 0%,var(--teal-dark) 100%);color:var(--white);text-align:center}
.cta-section h2{color:var(--white);margin-bottom:1rem}
.cta-section p{color:rgba(255,255,255,0.8);margin-bottom:2rem;font-size:1.125rem}
.cta-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* === Contact === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:start}
.contact-form{display:flex;flex-direction:column;gap:1.25rem}
.form-group{display:flex;flex-direction:column;gap:0.4rem}
.form-label{font-size:0.875rem;font-weight:600;color:var(--gray-700)}
.form-input,.form-select,.form-textarea{width:100%;padding:0.65rem 1rem;border:2px solid var(--gray-200);border-radius:var(--radius);font-size:0.9375rem;font-family:var(--font);transition:var(--transition);color:var(--gray-900);background:var(--white)}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(3,105,161,0.12)}
.form-textarea{resize:vertical;min-height:120px}
.contact-info{display:flex;flex-direction:column;gap:1.5rem}
.contact-item{display:flex;gap:1rem;align-items:flex-start}
.contact-icon{width:44px;height:44px;border-radius:10px;background:var(--blue-pale);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.contact-label{font-size:0.8rem;font-weight:600;color:var(--gray-500);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:0.2rem}
.contact-value{font-size:0.9375rem;font-weight:600;color:var(--gray-900)}

/* === Footer === */
.footer{background:var(--gray-900);color:var(--white);padding-top:3rem;padding-bottom:1.5rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.footer-logo{display:flex;align-items:center;gap:0.5rem;font-size:1.125rem;font-weight:800;color:var(--white);margin-bottom:1rem}
.footer-desc{font-size:0.875rem;color:rgba(255,255,255,0.5);line-height:1.7}
.footer-col-title{font-size:0.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:rgba(255,255,255,0.4);margin-bottom:1rem}
.footer-links{display:flex;flex-direction:column;gap:0.6rem}
.footer-links a{font-size:0.875rem;color:rgba(255,255,255,0.6);transition:color 0.2s}
.footer-links a:hover{color:var(--teal)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,0.08);flex-wrap:wrap;gap:1rem}
.footer-copy{font-size:0.8125rem;color:rgba(255,255,255,0.35)}

/* === Subpage === */
.subpage-header{background:linear-gradient(135deg,var(--blue-dark),var(--blue));padding:4rem 0 3rem;margin-top:60px}
.subpage-header h1{font-size:2rem;color:var(--white);margin-bottom:0.5rem}
.subpage-header p{color:rgba(255,255,255,0.7);font-size:1.0625rem}
.subpage-content{padding:3rem 0 5rem}
.prose h2{font-size:1.4rem;margin-top:2.5rem;margin-bottom:0.75rem;color:var(--gray-900)}
.prose h3{font-size:1.1rem;margin-top:1.75rem;margin-bottom:0.5rem;color:var(--gray-700)}
.prose p{margin-bottom:1rem}
.prose ul{list-style:disc;padding-left:1.5rem;margin-bottom:1rem}
.prose ul li{margin-bottom:0.3rem;color:var(--gray-500)}
.prose strong{color:var(--gray-900)}

/* === Demo page === */
.demo-hero{background:linear-gradient(135deg,var(--blue-dark),var(--teal-dark));padding:6rem 0 4rem;text-align:center;color:var(--white);margin-top:60px}
.demo-hero h1{color:var(--white);margin-bottom:1rem}
.demo-hero p{color:rgba(255,255,255,0.8);font-size:1.125rem;margin-bottom:2rem}
.demo-form-section{max-width:600px;margin:0 auto;background:var(--white);border-radius:var(--radius-lg);padding:2.5rem;box-shadow:var(--shadow-xl);margin-top:-2rem;position:relative}
.demo-live-section{background:var(--gray-50);padding:4rem 0}

/* === Responsive === */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .compliance-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-inner{grid-template-columns:1fr}
  .hero-visual{display:none}
}
@media(max-width:768px){
  .pricing-grid{grid-template-columns:1fr}
  .pricing-card.featured{transform:none}
  .grid-2,.grid-3,.testi-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links,.nav-cta{display:none}
  .nav-hamburger{display:flex}
  .compliance-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .compliance-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .dash-stats{grid-template-columns:repeat(2,1fr)}
}