@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Instrument+Sans:wght@400;500;600;700&display=swap');

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

:root{
  --font-mono:'Space Mono',monospace;
  --font-sans:'Instrument Sans',sans-serif;
  --bg:#0a0a0a;--bg-s:#111;--bg-e:#1a1a1a;--bg-h:#222;
  --tx:#f0f0f0;--tx2:#999;--txm:#666;
  --ac:#00e0a0;--ac-d:#00c08a;--ac-g:rgba(0,224,160,.15);--ac-s:rgba(0,224,160,.08);
  --danger:#ff4d6a;--warn:#ffb84d;--info:#4da6ff;
  --bd:#2a2a2a;--bd-l:#333;
  --r-s:4px;--r-m:8px;--r-l:12px;--r-xl:16px;
  --sh-s:0 1px 3px rgba(0,0,0,.3);--sh-m:0 4px 12px rgba(0,0,0,.4);--sh-l:0 8px 32px rgba(0,0,0,.5);
  --tr:.2s ease;--tr-s:.4s ease;
}

html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg);color:var(--tx);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;position:relative}
body::before{content:'';position:fixed;inset:0;opacity:.035;pointer-events:none;z-index:9999;mix-blend-mode:overlay;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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-repeat:repeat;background-size:256px 256px}

h1,h2,h3,h4{font-family:var(--font-mono);font-weight:700;letter-spacing:-.02em;line-height:1.2}
h1{font-size:2.5rem}h2{font-size:1.75rem}h3{font-size:1.25rem}
p{color:var(--tx2)}
a{color:var(--ac);text-decoration:none;transition:color var(--tr)}a:hover{color:var(--ac-d)}
code,.mono{font-family:var(--font-mono)}

/* Layout */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.container--narrow{max-width:720px}

/* Header */
.header{position:sticky;top:0;z-index:100;background:rgba(10,10,10,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--bd);padding:0 24px}
.header__inner{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.header__logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--tx)}
.header__logo-mark{width:32px;height:32px}
.header__logo-text{font-family:var(--font-mono);font-weight:700;font-size:1.25rem;letter-spacing:-.03em}
.header__nav{display:flex;align-items:center;gap:8px}
.header__link{font-family:var(--font-sans);font-size:.875rem;font-weight:500;color:var(--tx2);padding:8px 14px;border-radius:var(--r-m);transition:all var(--tr)}
.header__link:hover{color:var(--tx);background:var(--bg-h)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-sans);font-size:.875rem;font-weight:600;padding:10px 20px;border-radius:var(--r-m);border:none;cursor:pointer;transition:all var(--tr);text-decoration:none;white-space:nowrap;line-height:1.4}
.btn svg{width:16px;height:16px;flex-shrink:0}
.btn--primary{background:var(--ac);color:var(--bg)}
.btn--primary:hover{background:var(--ac-d);box-shadow:0 0 20px var(--ac-g);transform:translateY(-1px)}
.btn--secondary{background:var(--bg-e);color:var(--tx);border:1px solid var(--bd)}
.btn--secondary:hover{background:var(--bg-h);border-color:var(--bd-l)}
.btn--ghost{background:transparent;color:var(--tx2)}
.btn--ghost:hover{color:var(--tx);background:var(--bg-h)}
.btn--danger{background:var(--danger);color:#fff}
.btn--lg{padding:14px 28px;font-size:1rem}
.btn--sm{padding:6px 12px;font-size:.8rem}
.btn--block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}

/* Cards */
.card{background:var(--bg-s);border:1px solid var(--bd);border-radius:var(--r-l);padding:24px;transition:all var(--tr)}
.card:hover{border-color:var(--bd-l)}

/* Forms */
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:.8rem;font-weight:600;color:var(--tx2);text-transform:uppercase;letter-spacing:.05em;font-family:var(--font-mono)}
.form-input,.form-textarea,.form-select{font-family:var(--font-sans);font-size:.9375rem;padding:10px 14px;background:var(--bg);border:1px solid var(--bd);border-radius:var(--r-m);color:var(--tx);transition:all var(--tr);outline:none;width:100%}
.form-input:focus,.form-textarea:focus{border-color:var(--ac);box-shadow:0 0 0 3px var(--ac-g)}
.form-input::placeholder,.form-textarea::placeholder{color:var(--txm)}
.form-textarea{resize:vertical;min-height:100px}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
.badge--pending{background:rgba(255,184,77,.15);color:var(--warn)}
.badge--signed{background:rgba(0,224,160,.15);color:var(--ac)}
.badge--expired{background:rgba(255,77,106,.15);color:var(--danger)}

/* Hero */
.hero{padding:100px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,var(--ac-g) 0%,transparent 70%);pointer-events:none}
.hero__title{font-size:3.5rem;margin-bottom:16px;position:relative}
.hero__title span{color:var(--ac)}
.hero__subtitle{font-size:1.125rem;color:var(--tx2);max-width:500px;margin:0 auto 40px;line-height:1.7}
.hero__actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* Features */
.features{padding:80px 0}
.features__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.feature-card{padding:32px}
.feature-card__icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--ac-s);border-radius:var(--r-m);margin-bottom:16px;color:var(--ac)}
.feature-card__icon svg{width:24px;height:24px}
.feature-card__title{font-size:1rem;margin-bottom:8px}
.feature-card__desc{font-size:.875rem;line-height:1.6}

/* Dashboard */
.dashboard{padding:40px 0 80px}
.dashboard__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;flex-wrap:wrap;gap:16px}
.dashboard__title{font-size:1.5rem}
.doc-list{display:flex;flex-direction:column;gap:8px;overflow:hidden}
.doc-item{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-s);border:1px solid var(--bd);border-radius:var(--r-m);transition:all var(--tr);cursor:pointer;overflow:hidden}
.doc-item:hover{border-color:var(--bd-l);background:var(--bg-e)}
.doc-item__title{font-weight:600;font-size:.9375rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.doc-item__signer{font-size:.8125rem;color:var(--txm);font-family:var(--font-mono)}
.doc-item__date{font-size:.8125rem;color:var(--txm)}

/* Empty State */
.empty-state{text-align:center;padding:80px 24px}
.empty-state__icon{width:64px;height:64px;margin:0 auto 20px;color:var(--txm);opacity:.5}
.empty-state__title{font-size:1.125rem;margin-bottom:8px}
.empty-state__desc{font-size:.875rem;color:var(--txm);margin-bottom:24px}

/* Steps */
.steps{display:flex;gap:4px;margin-bottom:40px}
.step{flex:1;text-align:center;padding:12px;font-family:var(--font-mono);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--txm);background:var(--bg-s);border:1px solid var(--bd);transition:all var(--tr)}
.step:first-child{border-radius:var(--r-m) 0 0 var(--r-m)}
.step:last-child{border-radius:0 var(--r-m) var(--r-m) 0}
.step--active{color:var(--ac);background:var(--ac-s);border-color:rgba(0,224,160,.3)}
.step--done{color:var(--ac-d);background:rgba(0,224,160,.05);border-color:rgba(0,224,160,.15)}

/* Upload Zone */
.upload-zone{border:2px dashed var(--bd);border-radius:var(--r-l);padding:60px 24px;text-align:center;cursor:pointer;transition:all var(--tr);position:relative}
.upload-zone:hover,.upload-zone--active{border-color:var(--ac);background:var(--ac-s)}
.upload-zone__icon{width:48px;height:48px;margin:0 auto 16px;color:var(--txm)}
.upload-zone__text{font-size:.9375rem;color:var(--tx2);margin-bottom:4px}
.upload-zone__hint{font-size:.8125rem;color:var(--txm)}
.upload-zone input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer}

/* PDF Editor */
.pdf-editor{position:relative;background:var(--bg-s);border:1px solid var(--bd);border-radius:var(--r-l);overflow:hidden;margin-left:-120px;margin-right:-120px}
.pdf-editor__toolbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-e);border-bottom:1px solid var(--bd);flex-wrap:wrap;gap:8px}
.pdf-editor__toolbar-group{display:flex;align-items:center;gap:8px}
.pdf-editor__canvas-wrap{position:relative;display:flex;justify-content:center;padding:24px;min-height:600px;overflow:auto;background:#1a1a1a}
.pdf-editor__canvas-wrap canvas{box-shadow:var(--sh-l);max-width:100%}

/* Sign Field */
.sign-field{position:absolute;border:2px dashed var(--ac);background:rgba(0,224,160,.08);border-radius:var(--r-s);display:flex;align-items:center;justify-content:center;cursor:move;user-select:none;transition:border-color var(--tr);min-width:160px;min-height:50px}
.sign-field:hover{border-color:var(--ac-d);background:rgba(0,224,160,.12)}
.sign-field__label{font-family:var(--font-mono);font-size:.7rem;color:var(--ac);text-transform:uppercase;letter-spacing:.05em;pointer-events:none;display:flex;align-items:center;gap:6px}
.sign-field__label svg{width:14px;height:14px}
.sign-field__remove{position:absolute;top:-8px;right:-8px;width:20px;height:20px;background:var(--danger);border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#fff;opacity:0;transition:opacity var(--tr)}
.sign-field__remove svg{width:10px;height:10px}
.sign-field:hover .sign-field__remove{opacity:1}

/* Sign Info */
.sign-info{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--ac-s);border:1px solid rgba(0,224,160,.2);border-radius:var(--r-m);margin-bottom:24px}
.sign-info__icon{width:20px;height:20px;color:var(--ac);flex-shrink:0}
.sign-info__text{font-size:.875rem;color:var(--tx2)}

/* Signature Pad */
.sig-pad{background:var(--bg-s);border:1px solid var(--bd);border-radius:var(--r-l);padding:24px}
.sig-pad__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.sig-pad__tabs{display:flex;gap:4px}
.sig-pad__tab{font-family:var(--font-mono);font-size:.75rem;font-weight:700;padding:6px 14px;border-radius:var(--r-s);border:1px solid var(--bd);background:transparent;color:var(--txm);cursor:pointer;transition:all var(--tr);text-transform:uppercase;letter-spacing:.05em}
.sig-pad__tab--active{background:var(--ac);color:var(--bg);border-color:var(--ac)}
.sig-pad__canvas-wrap{position:relative;border:1px solid var(--bd);border-radius:var(--r-m);overflow:hidden;background:#fff}
.sig-pad__canvas-wrap canvas{width:100%;display:block;cursor:crosshair}
.sig-pad__type-input{width:100%;padding:20px;font-size:1.5rem;font-family:'Dancing Script',cursive;background:#fff;color:#111;border:1px solid var(--bd);border-radius:var(--r-m);text-align:center;outline:none}
.sig-pad__type-input:focus{border-color:var(--ac)}

/* Pricing */
.pricing{padding:80px 0}
.pricing__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:48px}
.price-card{position:relative;padding:32px;text-align:center}
.price-card--featured{border-color:var(--ac);box-shadow:0 0 30px var(--ac-g)}
.price-card--featured::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--ac);border-radius:var(--r-l) var(--r-l) 0 0}
.price-card__name{font-family:var(--font-mono);font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--txm);margin-bottom:12px}
.price-card__price{font-family:var(--font-mono);font-size:2.5rem;font-weight:700;margin-bottom:4px}
.price-card__price span.unit{font-size:1rem;color:var(--txm);font-weight:400}
.price-card__annual{font-size:.8125rem;color:var(--txm);margin-bottom:24px}
.price-card__features{list-style:none;text-align:left;margin-bottom:28px;display:flex;flex-direction:column;gap:10px}
.price-card__features li{font-size:.875rem;color:var(--tx2);display:flex;align-items:flex-start;gap:10px}
.price-card__features li svg{width:16px;height:16px;color:var(--ac);flex-shrink:0;margin-top:2px}

/* Complete */
.complete{padding:100px 0;text-align:center}
.complete__icon{width:80px;height:80px;margin:0 auto 24px;color:var(--ac);animation:pulse 2s ease infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:.8}}
.complete__title{font-size:2rem;margin-bottom:12px}
.complete__desc{font-size:1rem;color:var(--tx2);max-width:400px;margin:0 auto 32px}
.complete__actions{display:flex;gap:12px;justify-content:center}

/* Toast */
.toast-container{position:fixed;bottom:24px;right:24px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{font-family:var(--font-sans);font-size:.875rem;padding:12px 20px;background:var(--bg-e);border:1px solid var(--bd);border-radius:var(--r-m);box-shadow:var(--sh-m);color:var(--tx);display:flex;align-items:center;gap:10px;animation:toastIn .3s ease;max-width:360px}
.toast svg{width:16px;height:16px;flex-shrink:0}
.toast--success{border-left:3px solid var(--ac)}
.toast--error{border-left:3px solid var(--danger)}
.toast--info{border-left:3px solid var(--info)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}

/* Loader */
.loader{width:24px;height:24px;border:2px solid var(--bd);border-top-color:var(--ac);border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loader--lg{width:40px;height:40px;border-width:3px}

/* Auth */
.auth-box{max-width:400px;margin:100px auto;padding:40px}
.auth-box__title{text-align:center;margin-bottom:24px}

/* Footer */
.footer{padding:40px 24px;border-top:1px solid var(--bd);text-align:center}
.footer__text{font-size:.8125rem;color:var(--txm)}
.footer__links{display:flex;gap:16px;justify-content:center;margin-top:8px}
.footer__links a{font-size:.8125rem;color:var(--txm)}
.footer__links a:hover{color:var(--tx)}

/* Lang Toggle */
.lang-toggle{font-family:var(--font-mono);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:var(--r-s);border:1px solid var(--bd);background:transparent;color:var(--txm);cursor:pointer;transition:all var(--tr);text-transform:uppercase}
.lang-toggle:hover{color:var(--tx);border-color:var(--bd-l)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:200;opacity:0;visibility:hidden;transition:all var(--tr)}
.modal-overlay--active{opacity:1;visibility:visible}
.modal{background:var(--bg-s);border:1px solid var(--bd);border-radius:var(--r-xl);padding:32px;max-width:480px;width:90%;box-shadow:var(--sh-l);transform:translateY(20px);transition:transform var(--tr)}
.modal-overlay--active .modal{transform:translateY(0)}

/* Utilities */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.text-center{text-align:center}.text-accent{color:var(--ac)}.text-muted{color:var(--txm)}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-48{margin-top:48px}
.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}
.gap-8{gap:8px}.gap-16{gap:16px}.gap-24{gap:24px}
.hidden{display:none!important}
.page-enter{animation:pageEnter .4s ease}
@keyframes pageEnter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* Responsive */
@media(max-width:960px){
  .pdf-editor{margin-left:-24px;margin-right:-24px;border-radius:0}
}
@media(max-width:768px){
  h1{font-size:2rem}.hero__title{font-size:2.5rem}.hero{padding:60px 0 40px}
  .doc-item{grid-template-columns:1fr auto;gap:8px}
  .doc-item__signer,.doc-item__date{grid-column:1}
  .steps{flex-direction:column}
  .step:first-child{border-radius:var(--r-m) var(--r-m) 0 0}
  .step:last-child{border-radius:0 0 var(--r-m) var(--r-m)}
  .pricing__grid{grid-template-columns:1fr}
  .header__nav{gap:4px}.header__link{padding:6px 10px;font-size:.8rem}
}
@media(max-width:480px){
  .hero__title{font-size:2rem}.container{padding:0 16px}.card{padding:16px}
  .hero__actions{flex-direction:column;align-items:center}
}