/* =====================================================================
   LINK-IN-BIO — GLOBAL STYLES
   Mobile-first, modern minimal design system.
===================================================================== */

:root{
  --bg:#0b0f19;
  --surface:#141a29;
  --surface-2:#1c2438;
  --border:#273049;
  --text:#f1f5f9;
  --text-dim:#94a3b8;
  --accent:#6366f1;
  --accent-2:#8b5cf6;
  --success:#22c55e;
  --danger:#ef4444;
  --warning:#f59e0b;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:1rem;}
h1,h2,h3{line-height:1.2;margin:0 0 .5rem;}
p{margin:0 0 1rem;color:var(--text-dim);}

.container{max-width:1100px;margin:0 auto;padding:0 1.25rem;}
.container-sm{max-width:460px;margin:0 auto;padding:0 1.25rem;}

/* -------- Nav -------- */
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:1rem 1.25rem;border-bottom:1px solid var(--border);
  position:sticky;top:0;background:rgba(11,15,25,.85);backdrop-filter:blur(8px);
  z-index:50;
}
.nav .brand{font-weight:700;font-size:1.15rem;}
.nav-links{display:flex;gap:.5rem;align-items:center;}

/* -------- Buttons -------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.7rem 1.2rem;border-radius:10px;border:1px solid transparent;
  cursor:pointer;font-weight:600;font-size:.95rem;transition:.15s transform,.15s opacity;
  min-height:44px;
}
.btn:active{transform:scale(.97);}
.btn:disabled{opacity:.55;cursor:not-allowed;}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;}
.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border);}
.btn-danger{background:var(--danger);color:#fff;}
.btn-sm{padding:.45rem .8rem;font-size:.85rem;min-height:36px;}
.btn-block{width:100%;}
.btn-icon{padding:.5rem;min-width:40px;}

/* -------- Cards / surfaces -------- */
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow);
}
.card-sm{padding:1rem;border-radius:var(--radius);}

/* -------- Forms -------- */
.field{margin-bottom:1.1rem;}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.4rem;color:var(--text-dim);}
.field input,.field textarea,.field select{
  width:100%;padding:.75rem .9rem;border-radius:10px;border:1px solid var(--border);
  background:var(--surface-2);color:var(--text);outline:none;transition:.15s border-color;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);}
.field textarea{resize:vertical;min-height:80px;}
.field-hint{font-size:.78rem;color:var(--text-dim);margin-top:.3rem;}
.field-error{font-size:.8rem;color:var(--danger);margin-top:.3rem;}
.input-group{position:relative;}
.input-suffix{position:absolute;right:.8rem;top:50%;transform:translateY(-50%);font-size:.8rem;}

/* -------- Alerts / toasts -------- */
.alert{padding:.85rem 1rem;border-radius:10px;margin-bottom:1rem;font-size:.9rem;}
.alert-error{background:rgba(239,68,68,.12);color:#fca5a5;border:1px solid rgba(239,68,68,.3);}
.alert-success{background:rgba(34,197,94,.12);color:#86efac;border:1px solid rgba(34,197,94,.3);}
.alert-info{background:rgba(99,102,241,.12);color:#a5b4fc;border:1px solid rgba(99,102,241,.3);}

#toast-container{
  position:fixed;bottom:1.25rem;left:50%;transform:translateX(-50%);
  z-index:999;display:flex;flex-direction:column;gap:.5rem;width:min(92vw,380px);
}
.toast{
  padding:.8rem 1rem;border-radius:10px;background:var(--surface-2);
  border:1px solid var(--border);box-shadow:var(--shadow);font-size:.88rem;
  animation:toast-in .2s ease-out;
}
.toast.error{border-color:rgba(239,68,68,.5);}
.toast.success{border-color:rgba(34,197,94,.5);}
@keyframes toast-in{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}

/* -------- Spinner -------- */
.spinner{
  width:20px;height:20px;border-radius:50%;
  border:2.5px solid rgba(255,255,255,.25);border-top-color:#fff;
  animation:spin .7s linear infinite;display:inline-block;
}
.spinner-dark{border-color:rgba(0,0,0,.15);border-top-color:var(--accent);}
@keyframes spin{to{transform:rotate(360deg);}}
.center-loading{display:flex;align-items:center;justify-content:center;padding:3rem 0;}

/* -------- Landing page -------- */
.hero{padding:5rem 0 3.5rem;text-align:center;}
.hero h1{font-size:clamp(2rem,6vw,3.2rem);font-weight:800;
  background:linear-gradient(135deg,#fff,var(--text-dim));-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent;}
.hero p{font-size:1.1rem;max-width:560px;margin:0 auto 1.75rem;}
.hero-actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;}
.features{display:grid;grid-template-columns:1fr;gap:1rem;padding:2rem 0;}
@media(min-width:720px){.features{grid-template-columns:repeat(3,1fr);}}
.feature-card{text-align:left;}
.how-it-works{padding:2.5rem 0;text-align:center;}
footer{border-top:1px solid var(--border);padding:2rem 1.25rem;text-align:center;color:var(--text-dim);font-size:.85rem;}

/* -------- Auth pages -------- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem 1rem;}
.auth-card{width:100%;max-width:420px;}
.auth-links{text-align:center;margin-top:1rem;font-size:.9rem;color:var(--text-dim);}

/* -------- Dashboard layout -------- */
.dash-tabs{display:flex;gap:.4rem;overflow-x:auto;padding:1rem 0;border-bottom:1px solid var(--border);}
.dash-tab{padding:.55rem 1rem;border-radius:10px;white-space:nowrap;cursor:pointer;color:var(--text-dim);font-weight:600;font-size:.9rem;}
.dash-tab.active{background:var(--surface-2);color:var(--text);}
.dash-section{display:none;padding:1.25rem 0 3rem;}
.dash-section.active{display:block;}

.link-item{
  display:flex;align-items:center;gap:.6rem;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:.85rem;margin-bottom:.6rem;
}
.link-item .drag-handle{cursor:grab;color:var(--text-dim);touch-action:none;padding:.3rem;}
.link-item.dragging{opacity:.5;}
.link-item .link-info{flex:1;min-width:0;}
.link-item .link-title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.link-item .link-url{font-size:.78rem;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.link-item .link-stats{font-size:.75rem;color:var(--text-dim);}
.link-actions{display:flex;gap:.35rem;flex-wrap:wrap;}

.switch{position:relative;display:inline-block;width:42px;height:24px;flex-shrink:0;}
.switch input{opacity:0;width:0;height:0;}
.switch-track{position:absolute;inset:0;background:var(--border);border-radius:24px;cursor:pointer;transition:.15s;}
.switch-track::before{content:"";position:absolute;height:18px;width:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.15s;}
.switch input:checked + .switch-track{background:var(--accent);}
.switch input:checked + .switch-track::before{transform:translateX(18px);}

.avatar-preview{width:88px;height:88px;border-radius:50%;object-fit:cover;background:var(--surface-2);border:2px solid var(--border);}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;}
@media(min-width:640px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat-card{text-align:center;padding:1.1rem;}
.stat-number{font-size:1.6rem;font-weight:800;}
.stat-label{font-size:.8rem;color:var(--text-dim);}

.color-row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;}
.color-row input[type=color]{width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:none;padding:2px;cursor:pointer;}

.danger-zone{border:1px solid rgba(239,68,68,.4);border-radius:var(--radius);padding:1.25rem;background:rgba(239,68,68,.05);}

/* -------- Table (admin) -------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);}
table{width:100%;border-collapse:collapse;min-width:640px;}
th,td{padding:.7rem .85rem;text-align:left;border-bottom:1px solid var(--border);font-size:.88rem;}
th{color:var(--text-dim);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;}
tr:last-child td{border-bottom:none;}
.badge{display:inline-block;padding:.2rem .55rem;border-radius:20px;font-size:.72rem;font-weight:700;}
.badge-active{background:rgba(34,197,94,.15);color:#86efac;}
.badge-blocked{background:rgba(239,68,68,.15);color:#fca5a5;}
.pagination{display:flex;justify-content:center;gap:.5rem;padding:1rem 0;}

/* -------- Public profile -------- */
.profile-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:2.5rem 1.25rem;}
.profile-avatar{width:96px;height:96px;border-radius:50%;object-fit:cover;margin-bottom:1rem;border:3px solid rgba(255,255,255,.15);}
.profile-name{font-size:1.3rem;font-weight:700;}
.profile-username{color:var(--text-dim);margin-bottom:.75rem;}
.profile-bio{text-align:center;max-width:420px;margin-bottom:1.5rem;}
.profile-links{width:100%;max-width:440px;display:flex;flex-direction:column;gap:.75rem;}
.profile-link{
  display:block;text-align:center;padding:1rem;font-weight:600;
  border:1px solid rgba(255,255,255,.12);transition:.15s transform;
}
.profile-link:hover{transform:translateY(-2px);}
.profile-footer{margin-top:2rem;display:flex;gap:.75rem;}
.profile-empty,.profile-error{text-align:center;padding:4rem 1rem;}

.modal-backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;
  align-items:center;justify-content:center;z-index:200;padding:1rem;
}
.modal-backdrop.open{display:flex;}
.modal{width:100%;max-width:420px;}

.empty-state{text-align:center;padding:2.5rem 1rem;color:var(--text-dim);}
.hidden{display:none !important;}
.text-center{text-align:center;}
.mt-1{margin-top:1rem;}
.mb-0{margin-bottom:0;}
.flex-between{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;}