/* DoubleTick OTP Login – Frontend CSS v2 */
:root{
  --dt-primary:#25d366;--dt-bg:#ffffff;--dt-text:#1f2937;
  --dt-border:#d1d5db;--dt-error:#ef4444;--dt-success:#22c55e;
  --dt-radius:8px;--dt-fs:15px;--dt-ip:12px;
  --dt-shadow:0 8px 32px rgba(0,0,0,.10);
}
*,*::before,*::after{box-sizing:border-box;}

/* ── Wrapper ───────────────────────────────────────────────────── */
.dt-wrap{
  background:var(--dt-bg);color:var(--dt-text);
  border-radius:var(--dt-radius);box-shadow:var(--dt-shadow);
  padding:32px 36px;max-width:460px;margin:0 auto;
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  font-size:var(--dt-fs);
}
.dt-wrap *{box-sizing:border-box;}

/* ── Tab nav ───────────────────────────────────────────────────── */
.dt-tab-nav{display:flex;border-bottom:2px solid #e5e7eb;margin-bottom:24px;gap:2px;}
.dt-tab-btn{
  background:none;border:none;border-bottom:3px solid transparent;
  padding:10px 16px;cursor:pointer;font-size:.9rem;font-weight:600;
  color:#6b7280;margin-bottom:-2px;border-radius:6px 6px 0 0;transition:all .2s;
}
.dt-tab-btn:hover{color:var(--dt-primary);}
.dt-tab-btn.dt-active{color:var(--dt-primary);border-bottom-color:var(--dt-primary);}

/* ── Heading ───────────────────────────────────────────────────── */
.dt-heading{margin:0 0 4px;font-size:1.35rem;font-weight:700;color:var(--dt-text);}
.dt-sub{margin:0 0 20px;font-size:.88rem;color:#6b7280;}
.dt-alt-link{text-align:center;font-size:.85rem;color:#6b7280;margin-top:14px;}
.dt-alt-link a{color:var(--dt-primary);font-weight:600;}

/* ── Field ─────────────────────────────────────────────────────── */
.dt-field{margin-bottom:16px;}
.dt-field label{display:block;font-size:.84rem;font-weight:600;margin-bottom:5px;color:var(--dt-text);}
.dt-field-inline{display:flex;align-items:center;}
.dt-req{color:var(--dt-error);margin-left:2px;}
.dt-opt{color:#9ca3af;font-size:.78rem;font-weight:400;margin-left:4px;}
.dt-help{font-size:.78rem;color:#9ca3af;margin:4px 0 0;}

/* ── Input ─────────────────────────────────────────────────────── */
.dt-input{
  width:100%;padding:var(--dt-ip) 14px;
  border:1.5px solid var(--dt-border);border-radius:var(--dt-radius);
  font-size:var(--dt-fs);color:var(--dt-text);background:#fafafa;
  transition:border-color .2s,box-shadow .2s;outline:none;
  font-family:inherit;
}
.dt-input:focus{
  border-color:var(--dt-primary);background:#fff;
  box-shadow:0 0 0 3px color-mix(in srgb,var(--dt-primary) 18%,transparent);
}
textarea.dt-input{resize:vertical;min-height:80px;}
select.dt-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M6 8L0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;}

/* intl-tel-input overrides */
.dt-phone-wrap .iti{width:100%;}
.dt-phone-wrap .iti__selected-flag{border-right:1px solid var(--dt-border);}

/* Hint below phone */
.dt-hint{display:flex;align-items:center;gap:5px;font-size:.78rem;color:#6b7280;margin:5px 0 0;}
.dt-hint svg{fill:#25d366;flex-shrink:0;}

/* ── Radio / Checkbox ──────────────────────────────────────────── */
.dt-radio-group{display:flex;flex-direction:column;gap:6px;}
.dt-radio-label,.dt-checkbox-label{display:flex;align-items:flex-start;gap:8px;font-size:.9rem;font-weight:400;cursor:pointer;line-height:1.4;}
.dt-radio-label input,.dt-checkbox-label input{margin-top:3px;flex-shrink:0;accent-color:var(--dt-primary);}

/* ── Notices ───────────────────────────────────────────────────── */
.dt-notice{padding:10px 14px;border-radius:var(--dt-radius);margin-bottom:14px;font-size:.875rem;}
.dt-error{background:#fef2f2;color:var(--dt-error);border:1px solid #fecaca;}
.dt-success{background:#f0fff4;color:var(--dt-success);border:1px solid #86efac;}

/* ── Button ────────────────────────────────────────────────────── */
.dt-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 20px;border:none;border-radius:var(--dt-radius);
  font-size:var(--dt-fs);font-weight:700;cursor:pointer;
  transition:opacity .2s,transform .1s;text-decoration:none;
}
.dt-btn:active{transform:scale(.98);}
.dt-btn:disabled{opacity:.6;cursor:not-allowed;}
.dt-btn-primary{background:var(--dt-primary);color:#fff;width:100%;margin-top:4px;}
.dt-btn-primary:hover{opacity:.9;}
.dt-btn-outline{background:transparent;color:var(--dt-primary);border:2px solid var(--dt-primary);}
.dt-link-btn{background:none;border:none;color:var(--dt-primary);font-size:.85rem;cursor:pointer;padding:0;font-weight:600;text-decoration:underline;}

/* ── Spinner ───────────────────────────────────────────────────── */
.dt-spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:dt-spin .65s linear infinite;flex-shrink:0;}
@keyframes dt-spin{to{transform:rotate(360deg);}}

/* ── OTP Boxes ─────────────────────────────────────────────────── */
.dt-otp-boxes{display:flex;gap:8px;justify-content:center;margin:20px 0;}
.dt-otp-digit{
  flex:1;max-width:52px;height:56px;text-align:center;
  font-size:1.4rem;font-weight:700;padding:0;
  border:2px solid var(--dt-border);border-radius:calc(var(--dt-radius) * .8);
  caret-color:var(--dt-primary);
}
.dt-otp-digit:focus{border-color:var(--dt-primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--dt-primary) 18%,transparent);}

/* ── Resend ────────────────────────────────────────────────────── */
.dt-resend{text-align:center;margin-top:14px;}
.dt-countdown-wrap{font-size:.84rem;color:#6b7280;margin:0;}

/* ── Back button ───────────────────────────────────────────────── */
.dt-back-btn{background:none;border:none;color:#9ca3af;font-size:.84rem;cursor:pointer;padding:0;margin-bottom:12px;display:inline-flex;align-items:center;gap:4px;}
.dt-back-btn:hover{color:var(--dt-primary);}

/* ── Success step ──────────────────────────────────────────────── */
.dt-step-success{text-align:center;padding:10px 0 20px;}
.dt-success-icon{width:64px;height:64px;border-radius:50%;background:var(--dt-primary);color:#fff;font-size:1.8rem;line-height:64px;margin:0 auto 16px;}

/* ── Already logged in ─────────────────────────────────────────── */
.dt-already-in{text-align:center;padding:16px 0;}
.dt-already-in p{margin-bottom:14px;}

/* ── Responsive ────────────────────────────────────────────────── */
@media(max-width:480px){
  .dt-wrap{padding:22px 16px;}
  .dt-otp-digit{max-width:40px;height:48px;font-size:1.2rem;}
  .dt-otp-boxes{gap:6px;}
}