:root {
  --sts-blue: #2d8cff;
  --sts-blue-light: #eaf4ff;
  --sts-green: #3fc979;
  --sts-green-light: #eafaf1;
  --sts-orange: #ff9f1c;
  --sts-orange-light: #fff4df;
  --sts-red: #ff5a6b;
  --sts-grey: #64748b;
  --sts-bg: #f7fbff;
  --sts-border: #e5edf6;
  --sts-text: #10213f;
  --sts-muted: #64748b;
  --sts-card: #ffffff;
}

.sts-wrap, .sts-wrap * { box-sizing: border-box; }
.sts-wrap { font-family: Inter, Arial, sans-serif; color: var(--sts-text); }
.sts-wrap a { color: var(--sts-blue); text-decoration: none; }
.sts-notice { background: var(--sts-blue-light); border: 1px solid #b8dcff; color: #0f5299; padding: 12px 16px; border-radius: 12px; margin: 0 0 18px; }

.sts-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 0; border-radius: 10px; padding: 10px 16px; font-weight: 700; cursor: pointer; transition: .2s; text-decoration: none !important; line-height: 1.2; }
.sts-btn:hover { transform: translateY(-1px); opacity: .93; }
.sts-btn-primary { background: var(--sts-blue); color: #fff !important; }
.sts-btn-success { background: var(--sts-green); color: #fff !important; }
.sts-btn-light { background: #f3f7fb; color: var(--sts-text) !important; border: 1px solid var(--sts-border); }
.sts-btn-full { width: 100%; }
.sts-btn-mini { padding: 7px 10px; font-size: 12px; border-radius: 8px; background: #f4f8fc; color: var(--sts-text) !important; border: 1px solid var(--sts-border); }

.sts-auth-box { max-width: 520px; margin: 30px auto; background: #fff; border: 1px solid var(--sts-border); border-radius: 20px; padding: 30px; box-shadow: 0 20px 45px rgba(16,33,63,.08); }

.sts-form label { display: block; font-size: 13px; font-weight: 700; color: var(--sts-text); margin-bottom: 14px; }
.sts-form input, .sts-form textarea, .sts-form select { width: 100%; margin-top: 7px; border: 1px solid var(--sts-border); border-radius: 10px; padding: 0px 13px; outline: none; color: var(--sts-text); background: #fff; }
.sts-form input:focus, .sts-form textarea:focus, .sts-form select:focus { border-color: var(--sts-blue); box-shadow: 0 0 0 3px rgba(45,140,255,.12); }
.sts-small-text { font-size: 13px; color: var(--sts-muted); text-align: center; }

.sts-login-wrap { padding: 30px 10px; background: linear-gradient(135deg, #f6fbff, #f9fff9); border-radius: 24px; }
.sts-login-card { max-width: 980px; margin: auto; display: grid; grid-template-columns: 40% 60%; overflow: hidden; background: #fff; border: 1px solid var(--sts-border); border-radius: 24px; box-shadow: 0 24px 60px rgba(16,33,63,.10); }
.sts-login-left { background: linear-gradient(180deg, #f0f8ff, #eaf4ff); padding: 48px; position: relative; }
.sts-login-left h2 { font-size: 38px; line-height: 1.1; margin: 16px 0; }
.sts-login-left h2 span { color: var(--sts-blue); display: block; }
.sts-login-left p { color: var(--sts-muted); max-width: 270px; }
.sts-login-illustration { height: 140px; display: flex; align-items: center; gap: 16px; font-size: 42px; }
.sts-login-right { padding: 48px; }
.sts-role-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.sts-role-tabs button { border: 1px solid var(--sts-border); background: #fff; border-radius: 12px; padding: 12px 8px; cursor: pointer; font-weight: 700; color: var(--sts-text); }
.sts-role-tabs button.active { background: var(--sts-blue); color: #fff; border-color: var(--sts-blue); }

.sts-setup-wrap { padding: 30px 10px; }
.sts-setup-card { max-width: 880px; margin: auto; display: grid; grid-template-columns: 38% 62%; background: #fff; border: 1px solid var(--sts-border); border-radius: 24px; overflow: hidden; box-shadow: 0 24px 60px rgba(16,33,63,.10); }
.sts-setup-left { padding: 48px; background: linear-gradient(180deg, #f0fff7, #f7fffb); text-align: center; }
.sts-setup-left h2 { color: #118746; }
.sts-setup-icon { width: 78px; height: 78px; display: grid; place-items: center; border-radius: 24px; background: var(--sts-green-light); font-size: 38px; margin: 0 auto 18px; }
.sts-setup-form { padding: 42px; }

.sts-dashboard { min-height: 720px; display: grid; grid-template-columns: 245px 1fr; background: var(--sts-bg); border-radius: 24px; border: 1px solid var(--sts-border); overflow: hidden; }
.sts-sidebar { background: rgba(255,255,255,.82); border-right: 1px solid var(--sts-border); padding: 24px 16px; display: flex; flex-direction: column; min-height: 720px; }
.sts-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.sts-brand small { display: block; color: var(--sts-muted); font-size: 12px; margin-top: 2px; }
.sts-logo { width: 42px; height: 42px; display: grid; place-items: center; background: var(--sts-blue-light); border-radius: 14px; font-size: 22px; }
.sts-sidebar nav { display: grid; gap: 6px; }
.sts-sidebar nav a { color: var(--sts-text); padding: 12px 14px; border-radius: 12px; font-weight: 700; font-size: 14px; }
.sts-sidebar nav a.active, .sts-sidebar nav a:hover { background: var(--sts-blue-light); color: #1261bd; }
.sts-user-chip { margin-top: auto; background: var(--sts-blue-light); border-radius: 16px; padding: 14px; }
.sts-user-chip small { display: block; color: var(--sts-muted); }
.sts-main { padding: 28px; overflow-x: hidden; }
.sts-topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 22px; }
.sts-topbar h2 { margin: 0 0 6px; font-size: 28px; }
.sts-topbar p { margin: 0; color: var(--sts-muted); }

.sts-stats { display: grid; grid-template-columns: repeat(5, minmax(130px, 1fr)); gap: 14px; margin-bottom: 20px; }
.sts-stat { background: #fff; border: 1px solid var(--sts-border); border-radius: 16px; padding: 18px; display: flex; gap: 14px; align-items: center; box-shadow: 0 10px 30px rgba(16,33,63,.04); }
.sts-stat span { width: 38px; height: 38px; border-radius: 12px; display: block; }
.sts-stat-blue span { background: var(--sts-blue-light); }
.sts-stat-green span { background: var(--sts-green-light); }
.sts-stat-orange span { background: var(--sts-orange-light); }
.sts-stat-grey span { background: #eef2f7; }
.sts-stat small { display: block; color: var(--sts-muted); }
.sts-stat strong { font-size: 24px; }

.sts-card { background: #fff; border: 1px solid var(--sts-border); border-radius: 18px; padding: 20px; box-shadow: 0 10px 30px rgba(16,33,63,.04); margin-bottom: 20px; }
.sts-card h3 { margin: 0 0 16px; }
.sts-grid-2 { display: grid; grid-template-columns: 1fr 1.4fr; gap: 18px; }
.sts-section-head { display: flex; justify-content: space-between; gap: 18px; align-items: center; margin-bottom: 16px; }
.sts-section-head h3 { margin: 0; }
.sts-filters { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.sts-filters input, .sts-filters select { border: 1px solid var(--sts-border); border-radius: 10px; padding: 10px; }
.sts-table-scroll { overflow-x: auto; }
.sts-table { width: 100%; border-collapse: separate; border-spacing: 0; min-width: 980px; }
.sts-table th { text-align: left; color: var(--sts-muted); font-size: 12px; border-bottom: 1px solid var(--sts-border); padding: 13px 10px; background: #fbfdff; }
.sts-table td { border-bottom: 1px solid var(--sts-border); padding: 14px 10px; font-size: 13px; vertical-align: middle; }
.sts-table tr:last-child td { border-bottom: 0; }
.sts-table small { color: var(--sts-muted); }
.sts-inline-form { display: inline-flex; margin: 0; }

.sts-badge { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 800; margin-right: 6px; white-space: nowrap; }
.sts-status-pending { color: #a45b00; background: var(--sts-orange-light); }
.sts-status-in_progress { color: #1261bd; background: var(--sts-blue-light); }
.sts-status-completed { color: #118746; background: var(--sts-green-light); }
.sts-status-closed { color: #475569; background: #eef2f7; }
.sts-priority-low { color: #118746; background: var(--sts-green-light); }
.sts-priority-medium { color: #a45b00; background: var(--sts-orange-light); }
.sts-priority-high { color: #b42335; background: #fff0f2; }
.sts-role-main_admin { color: #5b21b6; background: #f4efff; }
.sts-role-support { color: #1261bd; background: var(--sts-blue-light); }
.sts-role-client { color: #118746; background: var(--sts-green-light); }

.sts-modal { position: fixed; inset: 0; z-index: 99999; display: none; align-items: center; justify-content: center; padding: 20px; }
.sts-modal.is-open { display: flex; }
.sts-modal-backdrop { position: absolute; inset: 0; background: rgba(12, 22, 42, .58); backdrop-filter: blur(6px); }
.sts-modal-dialog { position: relative; width: min(560px, 100%); background: #fff; border-radius: 20px; padding: 24px; box-shadow: 0 30px 90px rgba(0,0,0,.25); }
.sts-modal-close { position: absolute; top: 16px; right: 16px; border: 0; background: #f4f8fc; width: 34px; height: 34px; border-radius: 50%; font-size: 24px; cursor: pointer; }
.sts-modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.sts-upload-box { border: 2px dashed #b7d6f6; border-radius: 16px; background: #f8fbff; padding: 22px; text-align: center; position: relative; }
.sts-upload-box input { margin-top: 12px; }

.sts-ticket-detail-head { margin-bottom: 18px; }
.sts-ticket-detail-head h2 { margin: 8px 0 8px; }
.sts-meta-line { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--sts-muted); }
.sts-progress { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 18px 0 20px; }
.sts-progress-step { position: relative; text-align: center; color: var(--sts-muted); }
.sts-progress-step:before { content: ''; position: absolute; top: 15px; left: 0; right: 0; height: 3px; background: var(--sts-border); z-index: 0; }
.sts-progress-step span { position: relative; z-index: 1; display: block; width: 34px; height: 34px; margin: 0 auto 8px; border-radius: 50%; background: #fff; border: 3px solid var(--sts-border); }
.sts-progress-step.active span { border-color: var(--sts-green); background: var(--sts-green-light); }
.sts-progress-step.active { color: var(--sts-text); font-weight: 700; }
.sts-action-card { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.sts-action-card p { margin: 4px 0 0; color: var(--sts-muted); }
.sts-action-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.sts-success-note { background: var(--sts-green-light); color: #11683a; padding: 12px; border-radius: 12px; }
.sts-thread { display: grid; gap: 16px; }
.sts-message { display: grid; grid-template-columns: 42px 1fr; gap: 12px; }
.sts-avatar { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; background: var(--sts-blue); color: #fff; font-weight: 800; }
.sts-message-body { background: #f8fbff; border: 1px solid var(--sts-border); border-radius: 16px; padding: 14px; }
.sts-message-self .sts-message-body { background: #f7fff9; }
.sts-message-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--sts-muted); font-size: 12px; }
.sts-message-meta strong { color: var(--sts-text); }
.sts-message-body p { margin: 10px 0 0; }
.sts-attachments { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.sts-attachments a { background: #fff; border: 1px solid var(--sts-border); border-radius: 10px; padding: 8px 10px; font-size: 12px; color: var(--sts-text); }

@media (max-width: 1100px) {
  .sts-dashboard { grid-template-columns: 1fr; }
  .sts-sidebar { min-height: auto; }
  .sts-stats { grid-template-columns: repeat(2, 1fr); }
  .sts-grid-2 { grid-template-columns: 1fr; }
  .sts-section-head { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 760px) {
  .sts-login-card, .sts-setup-card { grid-template-columns: 1fr; }
  .sts-login-left, .sts-login-right, .sts-setup-left, .sts-setup-form { padding: 28px; }
  .sts-role-tabs { grid-template-columns: 1fr; }
  .sts-stats { grid-template-columns: 1fr; }
  .sts-topbar { flex-direction: column; }
  .sts-main { padding: 18px; }
  .sts-progress { grid-template-columns: 1fr 1fr; }
}