/* ==========================================================================
   Shortlink — Design System
   A calm, technical, "control room for links" aesthetic.
   Dark slate base + link-blue + amber spark accent. Mono for data, Sora for
   display, Inter for body. Every color/space value is a token below.
   ========================================================================== */

:root{
  --bg:            #F6F7FA;
  --surface:       #FFFFFF;
  --surface-2:     #FFFFFF;
  --surface-hover: #F1F3F8;
  --border:        #E4E7EE;
  --border-soft:   #ECEEF3;
  --text:          #12151C;
  --text-dim:      #5B6472;
  --text-faint:    #8A93A3;
  --accent:        #3E63DD;
  --accent-ink:    #FFFFFF;
  --accent-soft:   #EAEFFE;
  --spark:         #D97B00;
  --spark-soft:    #FFF3E0;
  --success:       #17875A;
  --success-soft:  #E4F7EE;
  --danger:        #D23C3C;
  --danger-soft:   #FDECEC;
  --warning:       #B4790C;
  --warning-soft:  #FFF6E0;
  --shadow-sm:     0 1px 2px rgba(20,24,34,.06);
  --shadow-md:     0 6px 20px -6px rgba(20,24,34,.14);
  --shadow-lg:     0 20px 48px -12px rgba(20,24,34,.22);
  --radius-sm:     8px;
  --radius-md:     12px;
  --radius-lg:     18px;
  --radius-pill:   999px;
  --ease:          cubic-bezier(.22,1,.36,1);
  color-scheme: light;
}

html[data-theme="dark"]{
  --bg:            #0B0E14;
  --surface:       #12151D;
  --surface-2:     #171B25;
  --surface-hover: #1C212C;
  --border:        #262C39;
  --border-soft:   #1E232E;
  --text:          #ECEFF5;
  --text-dim:      #9AA3B5;
  --text-faint:    #6B7385;
  --accent:        #6E8CFF;
  --accent-ink:    #0B0E14;
  --accent-soft:   #1B2340;
  --spark:         #F0A93E;
  --spark-soft:    #2E2210;
  --success:       #3ED498;
  --success-soft:  #12271F;
  --danger:        #FF6B6B;
  --danger-soft:   #2C1518;
  --warning:       #F0B93E;
  --warning-soft:  #2A2210;
  --shadow-sm:     0 1px 2px rgba(0,0,0,.3);
  --shadow-md:     0 10px 30px -8px rgba(0,0,0,.5);
  --shadow-lg:     0 24px 60px -14px rgba(0,0,0,.6);
  color-scheme: dark;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
html,body{ height:100%; }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:15px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  transition:background-color .35s var(--ease), color .35s var(--ease);
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

h1,h2,h3,h4{ font-family:'Sora',var(--,'Inter'),sans-serif; letter-spacing:-.01em; margin:0; color:var(--text); }
code,.mono,.mono *{ font-family:'JetBrains Mono',ui-monospace,Menlo,monospace; }

a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }

::selection{ background:var(--accent); color:var(--accent-ink); }

:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:6px; }

/* ---------- layout shells ---------- */
.shell{ min-height:100%; display:flex; flex-direction:column; }
.wrap{ width:100%; max-width:1080px; margin:0 auto; padding:0 24px; }
.center-shell{ min-height:100dvh; display:flex; align-items:center; justify-content:center; padding:24px; position:relative; overflow:hidden; }

/* ambient backdrop */
.ambient{ position:fixed; inset:0; z-index:-1; overflow:hidden; pointer-events:none; }
.ambient::before,.ambient::after{
  content:""; position:absolute; width:46vw; height:46vw; border-radius:50%;
  filter:blur(90px); opacity:.16;
}
.ambient::before{ background:var(--accent); top:-14vw; right:-10vw; }
.ambient::after{ background:var(--spark); bottom:-16vw; left:-12vw; opacity:.10; }

/* ---------- topbar ---------- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 0; margin-bottom:8px;
}
.brand{ display:flex; align-items:center; gap:10px; font-family:'Sora',sans-serif; font-weight:700; font-size:17px; color:var(--text); }
.brand-mark{ width:30px; height:30px; flex:none; }
.brand small{ display:block; font-family:'Inter',sans-serif; font-weight:500; font-size:11px; color:var(--text-faint); letter-spacing:.02em; }

.topbar-actions{ display:flex; align-items:center; gap:8px; }

/* ---------- buttons ---------- */
.btn{
  --btn-bg:var(--surface-2); --btn-fg:var(--text); --btn-bd:var(--border);
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 16px; font:600 13.5px/1 'Inter',sans-serif; letter-spacing:.005em;
  color:var(--btn-fg); background:var(--btn-bg); border:1px solid var(--btn-bd);
  border-radius:var(--radius-sm); cursor:pointer; white-space:nowrap;
  transition:transform .15s var(--ease), background-color .15s var(--ease), border-color .15s var(--ease), box-shadow .15s var(--ease);
  -webkit-tap-highlight-color:transparent; user-select:none;
}
.btn svg{ width:15px; height:15px; flex:none; }
.btn:hover{ background:var(--surface-hover); border-color:var(--text-faint); }
.btn:active{ transform:scale(.96); }
.btn:disabled{ opacity:.5; cursor:not-allowed; transform:none; }
.btn-primary{ --btn-bg:var(--accent); --btn-fg:var(--accent-ink); --btn-bd:var(--accent); box-shadow:var(--shadow-sm); }
.btn-primary:hover{ filter:brightness(1.08); background:var(--accent); }
.btn-ghost{ --btn-bg:transparent; --btn-bd:transparent; }
.btn-ghost:hover{ background:var(--surface-hover); }
.btn-danger{ --btn-fg:var(--danger); }
.btn-danger:hover{ background:var(--danger-soft); border-color:var(--danger); }
.btn-success{ --btn-fg:var(--success); }
.btn-success:hover{ background:var(--success-soft); border-color:var(--success); }
.btn-sm{ padding:7px 11px; font-size:12.5px; border-radius:7px; }
.btn-icon{ padding:9px; }
.btn-block{ width:100%; }

/* icon-only theme toggle */
.icon-toggle{
  width:38px; height:38px; border-radius:var(--radius-pill);
  display:flex; align-items:center; justify-content:center;
  background:var(--surface-2); border:1px solid var(--border); color:var(--text-dim);
  cursor:pointer; position:relative; overflow:hidden;
  transition:background-color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.icon-toggle:hover{ border-color:var(--text-faint); transform:translateY(-1px); }
.icon-toggle svg{ width:17px; height:17px; transition:transform .45s var(--ease), opacity .3s var(--ease); position:absolute; }
.icon-toggle .i-sun{ opacity:0; transform:rotate(-90deg) scale(.5); }
.icon-toggle .i-moon{ opacity:1; transform:rotate(0) scale(1); }
html[data-theme="dark"] .icon-toggle .i-sun{ opacity:1; transform:rotate(0) scale(1); }
html[data-theme="dark"] .icon-toggle .i-moon{ opacity:0; transform:rotate(90deg) scale(.5); }

/* ---------- cards ---------- */
.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm); padding:22px; margin-bottom:18px;
  animation:rise .5s var(--ease) both;
}
.card + .card{ animation-delay:.05s; }
.card-title{ display:flex; align-items:center; gap:9px; font-size:15px; font-weight:700; margin-bottom:4px; }
.card-title svg{ width:17px; height:17px; color:var(--accent); }
.card-sub{ color:var(--text-dim); font-size:13px; margin-bottom:16px; }

@keyframes rise{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:none; } }

/* ---------- form fields ---------- */
.field{ margin-bottom:14px; }
.field label{ display:block; font-size:12.5px; font-weight:600; color:var(--text-dim); margin-bottom:6px; }
.field label .req{ color:var(--danger); }
.field small{ display:block; color:var(--text-faint); font-size:11.5px; margin-top:5px; }
.input,input[type=text],input[type=url],input[type=password],input[type=search]{
  width:100%; padding:11px 13px; font:500 14px/1.3 'Inter',sans-serif; color:var(--text);
  background:var(--surface-2); border:1px solid var(--border); border-radius:var(--radius-sm);
  transition:border-color .15s var(--ease), box-shadow .15s var(--ease), background-color .2s var(--ease);
}
.input::placeholder,input::placeholder{ color:var(--text-faint); }
.input:focus,input:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft); background:var(--surface); }
.input-group{ position:relative; }
.input-group .input{ padding-right:42px; }
.input-group .input-adorn{
  position:absolute; right:6px; top:50%; transform:translateY(-50%);
  width:30px; height:30px; border:0; background:transparent; color:var(--text-faint);
  display:flex; align-items:center; justify-content:center; cursor:pointer; border-radius:7px;
}
.input-group .input-adorn:hover{ background:var(--surface-hover); color:var(--text); }
.form-row{ display:flex; gap:14px; flex-wrap:wrap; }
.form-row > div{ flex:1; min-width:220px; }

/* ---------- alerts / toast ---------- */
.alert{ display:flex; gap:10px; align-items:flex-start; padding:12px 14px; border-radius:var(--radius-sm); font-size:13.5px; margin-bottom:16px; border:1px solid transparent; animation:rise .4s var(--ease) both; }
.alert svg{ width:17px; height:17px; flex:none; margin-top:1px; }
.alert-success{ background:var(--success-soft); color:var(--success); border-color:color-mix(in srgb, var(--success) 30%, transparent); }
.alert-error{ background:var(--danger-soft); color:var(--danger); border-color:color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-warning{ background:var(--warning-soft); color:var(--warning); border-color:color-mix(in srgb, var(--warning) 30%, transparent); }
.alert b,.alert a{ color:inherit; }

#toast-stack{ position:fixed; bottom:20px; right:20px; z-index:1000; display:flex; flex-direction:column; gap:10px; max-width:min(360px,calc(100vw - 40px)); }
.toast{
  display:flex; align-items:center; gap:10px; background:var(--surface-2); color:var(--text);
  border:1px solid var(--border); box-shadow:var(--shadow-lg); border-radius:var(--radius-sm);
  padding:12px 14px; font-size:13px; font-weight:500; animation:toast-in .35s var(--ease) both;
}
.toast svg{ width:16px; height:16px; flex:none; }
.toast.ok svg{ color:var(--success); } .toast.err svg{ color:var(--danger); } .toast.info svg{ color:var(--accent); }
.toast.leaving{ animation:toast-out .25s var(--ease) both; }
@keyframes toast-in{ from{ opacity:0; transform:translateY(10px) scale(.96); } to{ opacity:1; transform:none; } }
@keyframes toast-out{ to{ opacity:0; transform:translateX(12px); } }

/* ---------- stat cards ---------- */
.stats-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:14px; margin-bottom:18px; }
.stat{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:16px 18px; box-shadow:var(--shadow-sm); animation:rise .5s var(--ease) both;
}
.stat-label{ display:flex; align-items:center; gap:7px; font-size:11.5px; font-weight:600; text-transform:uppercase; letter-spacing:.04em; color:var(--text-faint); margin-bottom:8px; }
.stat-label svg{ width:13px; height:13px; }
.stat-value{ font-family:'Sora',sans-serif; font-size:26px; font-weight:700; color:var(--text); }
.stat-value.accent{ color:var(--accent); } .stat-value.spark{ color:var(--spark); }

/* ---------- table & mobile cards ---------- */
.table-wrap{ overflow-x:auto; }
table.links{ width:100%; border-collapse:collapse; font-size:13.5px; }
table.links th{
  text-align:left; padding:10px 12px; font-size:11px; font-weight:700; text-transform:uppercase;
  letter-spacing:.04em; color:var(--text-faint); border-bottom:1px solid var(--border); white-space:nowrap; cursor:pointer; user-select:none;
}
table.links th:hover{ color:var(--text-dim); }
table.links th .sort-arrow{ opacity:.4; margin-left:3px; font-size:10px; }
table.links td{ padding:12px; border-bottom:1px solid var(--border-soft); vertical-align:middle; }
table.links tbody tr{ transition:background-color .15s var(--ease); }
table.links tbody tr:hover{ background:var(--surface-hover); }

.code-chip{
  display:inline-flex; align-items:center; gap:6px; background:var(--accent-soft); color:var(--accent);
  padding:5px 10px; border-radius:var(--radius-pill); font-size:12.5px; font-weight:700;
}
.dest-link{ color:var(--text-dim); }
.dest-link:hover{ color:var(--accent); }
.host-tag{ display:inline-block; background:var(--surface-2); border:1px solid var(--border); color:var(--text-faint); font-size:10.5px; padding:1px 7px; border-radius:6px; margin-left:6px; }
.click-count{ font-family:'JetBrains Mono',monospace; font-weight:600; }
.action-btns{ display:flex; gap:6px; }

.empty-state{ text-align:center; padding:50px 20px; color:var(--text-dim); }
.empty-state svg{ width:44px; height:44px; color:var(--text-faint); margin-bottom:12px; }
.empty-state h4{ font-size:15px; margin-bottom:4px; color:var(--text); }
.empty-state p{ font-size:13px; margin:0; }

/* mobile stacked cards for table */
.link-cards{ display:none; flex-direction:column; gap:10px; }
.link-card{ border:1px solid var(--border); border-radius:var(--radius-md); padding:14px; background:var(--surface); }
.link-card-top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:8px; }
.link-card-dest{ font-size:13px; color:var(--text-dim); word-break:break-all; margin-bottom:10px; }
.link-card-meta{ display:flex; justify-content:space-between; align-items:center; font-size:12px; color:var(--text-faint); }

@media (max-width: 720px){
  .table-wrap{ display:none; }
  .link-cards{ display:flex; }
}

/* ---------- chips / filters ---------- */
.chip-row{ display:flex; flex-wrap:wrap; gap:7px; margin:10px 0 4px; }
.chip{
  font-size:12px; font-weight:600; padding:6px 12px; border-radius:var(--radius-pill);
  background:var(--surface-2); border:1px solid var(--border); color:var(--text-dim); cursor:pointer;
  transition:all .15s var(--ease);
}
.chip:hover{ border-color:var(--accent); color:var(--accent); }
.chip.active{ background:var(--accent); border-color:var(--accent); color:var(--accent-ink); }

/* ---------- modal ---------- */
.modal-backdrop{
  position:fixed; inset:0; background:rgba(6,8,14,.55); backdrop-filter:blur(3px);
  display:flex; align-items:center; justify-content:center; z-index:900; padding:20px;
  opacity:0; pointer-events:none; transition:opacity .2s var(--ease);
}
.modal-backdrop.show{ opacity:1; pointer-events:auto; }
.modal{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg); width:100%; max-width:380px; padding:24px;
  transform:scale(.94) translateY(6px); opacity:0; transition:all .25s var(--ease);
}
.modal-backdrop.show .modal{ transform:none; opacity:1; }
.modal-icon{ width:44px; height:44px; border-radius:12px; display:flex; align-items:center; justify-content:center; margin-bottom:14px; }
.modal-icon.danger{ background:var(--danger-soft); color:var(--danger); }
.modal-icon svg{ width:22px; height:22px; }
.modal h3{ font-size:16px; margin-bottom:6px; }
.modal p{ color:var(--text-dim); font-size:13.5px; margin:0 0 18px; }
.modal-actions{ display:flex; gap:10px; }
.modal-actions .btn{ flex:1; }

.modal.qr-modal{ max-width:320px; text-align:center; }
.qr-box{ background:#fff; padding:16px; border-radius:var(--radius-md); display:inline-block; margin:6px 0 14px; box-shadow:var(--shadow-sm); }
.qr-box canvas,.qr-box img{ display:block; }
.qr-url{ font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--text-dim); word-break:break-all; margin-bottom:14px; }

/* ---------- login page ---------- */
.auth-card{ width:100%; max-width:380px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); padding:32px; animation:rise .55s var(--ease) both; position:relative; }
.auth-logo{ display:flex; justify-content:center; margin-bottom:18px; }
.auth-logo svg{ width:46px; height:46px; }
.auth-card h2{ text-align:center; font-size:19px; margin-bottom:4px; }
.auth-card .sub{ text-align:center; color:var(--text-dim); font-size:13px; margin-bottom:22px; }
.auth-card.shake{ animation:shake .4s; }
@keyframes shake{ 10%,90%{ transform:translateX(-1px); } 20%,80%{ transform:translateX(2px); } 30%,50%,70%{ transform:translateX(-4px); } 40%,60%{ transform:translateX(4px); } }
.auth-foot{ text-align:center; margin-top:18px; font-size:12px; color:var(--text-faint); }
.auth-foot a{ color:var(--text-faint); }
.auth-toggle{ position:absolute; top:16px; right:16px; }

/* ---------- interstitial ---------- */
.transit-card{ width:100%; max-width:440px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); padding:32px; text-align:center; animation:rise .5s var(--ease) both; }
.transit-ring{ width:64px; height:64px; margin:0 auto 18px; position:relative; }
.transit-ring svg{ width:100%; height:100%; transform:rotate(-90deg); }
.transit-ring circle{ fill:none; stroke-width:4; }
.transit-ring .track{ stroke:var(--border); }
.transit-ring .bar{ stroke:var(--accent); stroke-linecap:round; transition:stroke-dashoffset 1s linear; }
.transit-ring .glyph{ position:absolute; inset:0; display:flex; align-items:center; justify-content:center; }
.transit-ring .glyph svg{ width:22px; height:22px; color:var(--accent); }
.transit-card h2{ font-size:17px; margin-bottom:6px; }
.transit-dest{ font-family:'JetBrains Mono',monospace; font-size:13px; background:var(--surface-2); border:1px solid var(--border); border-radius:var(--radius-sm); padding:10px 12px; word-break:break-all; color:var(--text-dim); margin:14px 0 18px; }
.transit-note{ font-size:12px; color:var(--text-faint); margin-top:16px; display:flex; gap:6px; justify-content:center; align-items:flex-start; text-align:left; }
.transit-note svg{ width:14px; height:14px; flex:none; margin-top:1px; }

/* ---------- 404 ---------- */
.status-card{ width:100%; max-width:420px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); padding:36px 32px; text-align:center; animation:rise .5s var(--ease) both; }
.status-code{ font-family:'Sora',sans-serif; font-weight:700; font-size:44px; color:var(--text-faint); letter-spacing:-.02em; margin-bottom:6px; }
.status-card h2{ font-size:17px; margin-bottom:8px; }
.status-card p{ color:var(--text-dim); font-size:13.5px; margin:0 0 20px; }
.status-actions{ display:flex; gap:10px; justify-content:center; flex-wrap:wrap; }

/* ---------- legal pages ---------- */
.legal-wrap{ max-width:720px; margin:0 auto; padding:50px 24px 70px; }
.legal-wrap h1{ font-size:26px; margin-bottom:6px; }
.legal-meta{ color:var(--text-faint); font-size:13px; margin-bottom:26px; }
.legal-wrap h3{ font-size:15px; margin:26px 0 10px; display:flex; align-items:center; gap:8px; }
.legal-wrap h3 svg{ width:16px; height:16px; color:var(--accent); }
.legal-wrap ul{ margin:0; padding-left:20px; color:var(--text-dim); font-size:14px; }
.legal-wrap li{ margin-bottom:6px; }
.legal-foot{ margin-top:40px; padding-top:20px; border-top:1px solid var(--border); font-size:12.5px; color:var(--text-faint); text-align:center; }

/* ---------- footer ---------- */
.site-foot{ text-align:center; padding:26px 0 10px; font-size:12px; color:var(--text-faint); }
.site-foot a{ color:var(--text-faint); }

/* ---------- misc ---------- */
.count-up{ display:inline-block; }
.spin{ animation:spin 1s linear infinite; }
@keyframes spin{ to{ transform:rotate(360deg); } }
.skeleton{ background:linear-gradient(90deg,var(--surface-2) 25%,var(--surface-hover) 37%,var(--surface-2) 63%); background-size:400% 100%; animation:sk 1.4s ease infinite; border-radius:6px; }
@keyframes sk{ 0%{ background-position:100% 50%; } 100%{ background-position:0 50%; } }