:root{
  --navy:#233E8B;--blue:#358EC8;--gray-text:#5a6c7d;--gray-mid:#cbd5e0;
  --gray-light:#f7fafc;--success:#22c55e;--error:#dc2626;
  --warning:#f59e0b;--info:#3b82f6;
}
*{box-sizing:border-box}
html,body{margin:0;font-family:'Segoe UI',Tahoma,Arial,sans-serif;background:var(--gray-light);color:#1a202c;min-height:100vh}

/* ====== AUTH (login + accept-invite) ====== */
.auth-view{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#233E8B 0%,#358EC8 100%)}
.auth-card{background:#fff;border-radius:16px;padding:36px 32px;box-shadow:0 20px 60px rgba(0,0,0,.25);width:100%;max-width:420px}
.brand{margin:0 0 6px;color:var(--navy);font-size:28px;text-align:center;font-weight:800}
.subtitle{margin:0 0 24px;color:var(--gray-text);text-align:center;font-size:14px}
.auth-help{text-align:center;margin-top:16px;color:var(--gray-text)}
.auth-help a{color:var(--navy);font-weight:600}

/* ====== APP (composer) ====== */
.app-view{display:flex;flex-direction:column;min-height:100vh}
.topbar{background:var(--navy);color:#fff;padding:12px 24px;display:flex;align-items:center;gap:16px}
.topbar h1{margin:0;font-size:18px;font-weight:700}
.topbar .tag{background:rgba(255,255,255,.15);padding:3px 10px;border-radius:12px;font-size:12px}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.online-dot{color:var(--success);font-size:14px}
.online-dot.offline{color:var(--warning)}

.main-grid{flex:1;max-width:1400px;margin:0 auto;padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;width:100%}
@media(max-width:1000px){.main-grid{grid-template-columns:1fr}}

.panel{background:#fff;border-radius:12px;padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
h2{margin:0 0 12px;color:var(--navy);font-size:18px}
h3{margin:14px 0 8px;font-size:14px;color:var(--gray-text);text-transform:uppercase;letter-spacing:.5px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border:0;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;background:var(--navy);color:#fff}
.btn:hover{filter:brightness(1.1)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--navy)}
.btn-secondary{background:#fff;color:var(--navy);border:2px solid var(--navy)}
.btn-success{background:var(--success)}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-small{padding:5px 10px;font-size:12px}
.btn-ghost.btn-small{color:#fff}

/* Inputs */
input,textarea,select{width:100%;padding:8px 12px;border:1.5px solid var(--gray-mid);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--navy)}
label{display:block;font-weight:600;font-size:13px;color:var(--gray-text);margin-bottom:4px;margin-top:8px}

/* Dropzone */
.dropzone{border:2px dashed var(--gray-mid);border-radius:12px;padding:32px 16px;text-align:center;cursor:pointer;transition:all .2s}
.dropzone:hover,.dropzone.dragover{border-color:var(--navy);background:rgba(35,62,139,.04)}
.dropzone p{margin:8px 0;color:var(--gray-text)}

/* Tabs */
.tabs{display:flex;gap:4px;margin:14px 0 10px;border-bottom:1px solid var(--gray-mid)}
.tab-btn{padding:8px 14px;border:0;background:transparent;color:var(--gray-text);font-weight:600;cursor:pointer;border-bottom:2px solid transparent;font-size:13px}
.tab-btn.active{color:var(--navy);border-bottom-color:var(--navy)}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-height:340px;overflow-y:auto;padding:4px}
@media(max-width:600px){.gallery{grid-template-columns:repeat(2,1fr)}}
.frame-card{background:var(--gray-light);border:2px solid transparent;border-radius:10px;padding:8px;cursor:pointer;transition:all .15s;position:relative}
.frame-card:hover{border-color:var(--blue);transform:translateY(-2px)}
.frame-card.selected{border-color:var(--navy);box-shadow:0 0 0 2px rgba(35,62,139,.2)}
.frame-card .thumb{width:100%;height:120px;background:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.frame-card .thumb svg{max-width:100%;max-height:100%}
.frame-card .name{margin-top:6px;font-size:12px;font-weight:600;color:var(--navy);text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.frame-card .meta{font-size:10px;color:var(--gray-text);text-align:center}
.frame-card .badge{position:absolute;top:4px;left:4px;background:var(--blue);color:#fff;font-size:9px;padding:2px 6px;border-radius:10px;font-weight:700}
.frame-card .delete-btn{position:absolute;top:4px;right:4px;background:rgba(220,38,38,.9);color:#fff;border:0;width:22px;height:22px;border-radius:50%;cursor:pointer;font-size:14px;line-height:1;opacity:0;transition:opacity .15s;display:flex;align-items:center;justify-content:center;z-index:2}
.frame-card:hover .delete-btn{opacity:1}

/* Preview */
.preview-box{background:repeating-linear-gradient(45deg,#e8edf3,#e8edf3 10px,#f7fafc 10px,#f7fafc 20px);border-radius:10px;padding:14px;min-height:300px;display:flex;align-items:center;justify-content:center}
.preview-box svg{max-width:100%;max-height:400px;background:#fff;box-shadow:0 4px 12px rgba(0,0,0,.08);border-radius:4px;display:block}

.empty-state{color:var(--gray-text);text-align:center;padding:40px 20px}
.empty-state svg{width:48px;height:48px;opacity:.5}

.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.text-small{font-size:12px;color:var(--gray-text)}
.divider{height:1px;background:var(--gray-mid);margin:14px 0}

.font-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:6px}
.font-grid button{padding:8px 4px;border:1.5px solid var(--gray-mid);background:#fff;border-radius:6px;cursor:pointer;font-size:11px;font-weight:600}
.font-grid button.active{border-color:var(--navy);background:rgba(35,62,139,.06);color:var(--navy)}

.progress{height:6px;background:var(--gray-mid);border-radius:3px;overflow:hidden;margin-top:8px;display:none}
.progress.show{display:block}
.progress-bar{height:100%;background:var(--blue);width:0;transition:width .2s}

/* Toast */
.toast{position:fixed;bottom:20px;right:20px;background:var(--success);color:#fff;padding:12px 20px;border-radius:8px;font-weight:600;box-shadow:0 4px 12px rgba(0,0,0,.15);transform:translateY(100px);transition:transform .25s;z-index:100;max-width:380px}
.toast.show{transform:translateY(0)}
.toast.error{background:var(--error)}
.toast.warning{background:var(--warning)}
.toast.info{background:var(--info)}

/* Footer */
.appfooter{text-align:center;padding:14px;font-size:12px;color:var(--gray-text)}
.appfooter a{color:var(--navy);text-decoration:none;font-weight:600;margin-left:12px}

/* Admin */
.admin-table{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}
.admin-table th{background:var(--gray-light);padding:10px;text-align:left;color:var(--gray-text);font-size:12px;text-transform:uppercase}
.admin-table td{padding:10px;border-bottom:1px solid var(--gray-mid)}
.admin-table tr:hover{background:var(--gray-light)}

.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}
.badge.free{background:#e0e7ff;color:#3730a3}
.badge.pro{background:#dcfce7;color:#15803d}
.badge.business{background:#fef3c7;color:#a16207}
.badge.active{background:#dcfce7;color:#15803d}
.badge.suspended{background:#fee2e2;color:#991b1b}

/* ====== Filter chips ====== */
.filter-chips{margin:8px 0 12px;padding:8px;background:var(--gray-light);border-radius:8px}
.filter-row{display:flex;align-items:flex-start;gap:8px;margin-bottom:6px}
.filter-label{font-size:11px;color:var(--gray-text);font-weight:600;text-transform:uppercase;min-width:80px;padding-top:6px}
.filter-chips-row{display:flex;flex-wrap:wrap;gap:4px;flex:1}
.chip-btn{padding:4px 10px;border:1px solid var(--gray-mid);background:#fff;border-radius:14px;cursor:pointer;font-size:12px;font-weight:500;transition:all .12s}
.chip-btn:hover{border-color:var(--blue);color:var(--navy)}
.chip-btn.active{background:var(--navy);color:#fff;border-color:var(--navy);font-weight:600}
.chip-btn.clear{background:var(--error);color:#fff;border-color:var(--error);font-size:11px;padding:3px 8px}

/* Filter dropdown collapse */
.filter-header{display:flex;align-items:center;gap:8px}
.filter-toggle{padding:6px 14px;border:1.5px solid var(--gray-mid);background:#fff;border-radius:8px;cursor:pointer;font-weight:600;font-size:13px;color:var(--navy)}
.filter-toggle:hover{border-color:var(--navy);background:rgba(35,62,139,.04)}
.filter-body{margin-top:10px;padding-top:10px;border-top:1px solid var(--gray-mid)}

/* Login form button center */
#login-form button[type=submit],#invite-form button[type=submit]{display:block;margin-left:auto;margin-right:auto}

/* ====== Mobile responsive ====== */
@media (max-width: 768px) {
  .topbar{padding:10px 12px;flex-wrap:wrap;gap:8px}
  .topbar h1{font-size:16px}
  .topbar .tag{font-size:10px;padding:2px 6px}
  .topbar-right{margin-left:auto;gap:6px}
  .topbar-right span{display:none}  /* hide email on mobile to save space */
  .main-grid{padding:10px;gap:12px}
  .panel{padding:12px}
  h2{font-size:16px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .frame-card .thumb{height:90px}
  .filter-toggle{width:100%;justify-content:center}
  .filter-row{flex-direction:column;align-items:flex-start;gap:4px}
  .filter-label{min-width:auto}
  .preview-box{min-height:220px;padding:8px}
  .preview-box svg, .preview-box img{max-height:300px}
  /* Sticky action buttons on mobile */
  .actions{position:sticky;bottom:0;background:#fff;padding:10px;margin:14px -12px -12px;border-top:1px solid var(--gray-mid);z-index:10}
  .actions .btn{flex:1;padding:11px 8px;font-size:13px;min-width:auto}
  .btn{padding:11px 14px}  /* larger touch targets */
  .auth-card{padding:24px 18px}
  .row{grid-template-columns:1fr}
}
@media (max-width: 480px) {
  .gallery{grid-template-columns:1fr}
  .frame-card .thumb{height:140px}
}

/* Mobile header — compact */
@media (max-width: 600px) {
  .topbar{padding:8px 10px;gap:6px}
  .topbar h1{font-size:14px;line-height:1.2}
  .topbar .tag{display:none}
  .topbar-right{gap:4px}
  .topbar-right .btn-small{padding:6px 8px;font-size:11px}
  #user-email{display:none}
  #online-status{display:none}
}
@media (max-width: 400px) {
  #btn-change-pw{display:none}  /* Hide on very small. Access via /admin or settings later */
}