*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:      #2E7D32;
  --green-mid:  #388E3C;
  --green-lite: #E8F5E9;
  --green-pale: #F1F8F1;
  --green-bdr:  #A5D6A7;
  --text:       #1B1B1B;
  --muted:      #5A6272;
  --faint:      #9AA3AF;
  --border:     #DDE3E7;
  --surface:    #FFFFFF;
  --bg:         #F4F6F4;
  --red:        #C62828;
  --red-lite:   #FFEBEE;
  --red-bdr:    #EF9A9A;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Nav ── */
nav {
  background: var(--green);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: white; }
.nav-logo { width: 34px; height: 34px; background: rgba(255,255,255,.15); border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.nav-logo svg { width: 20px; height: 20px; fill: white; }
.nav-name { font-size: 17px; font-weight: 700; letter-spacing: .3px; }
.nav-tagline { font-size: 11px; color: rgba(255,255,255,.65); letter-spacing: .5px; text-transform: uppercase; }
.nav-links { display: flex; gap: 8px; }
.nav-link { font-size: 13px; color: rgba(255,255,255,.75); text-decoration: none; padding: 6px 14px; border-radius: 6px; border: 1px solid rgba(255,255,255,.25); transition: background .15s; }
.nav-link:hover, .nav-link.active { background: rgba(255,255,255,.2); color: white; }

/* ── Page ── */
.page { max-width: 620px; margin: 0 auto; padding: 2rem 1rem 4rem; }
.page-head { margin-bottom: 1.5rem; }
.page-head h2 { font-size: 22px; font-weight: 700; color: var(--green); }
.page-head p  { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ── Mode tabs ── */
.mode-tabs { display: flex; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 4px; margin-bottom: 1.25rem; gap: 4px; }
.tab { flex: 1; padding: 10px; border: none; background: transparent; border-radius: 7px; font-size: 14px; font-weight: 500; cursor: pointer; color: var(--muted); display: flex; align-items: center; justify-content: center; gap: 7px; transition: background .15s, color .15s; }
.tab.active { background: var(--green); color: white; }
.tab svg { width: 16px; height: 16px; }
.tab:not(.active):hover { background: var(--green-lite); color: var(--green); }

/* ── Cards ── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem 1.25rem 1.4rem; margin-bottom: 1rem; }
.card-title { font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); margin-bottom: 1rem; }

/* ── Inputs ── */
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
input[type=text], input[type=url], textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #FAFCFA; color: var(--text); outline: none;
  transition: border-color .15s, box-shadow .15s; font-family: inherit;
}
input[type=text]:focus, input[type=url]:focus, textarea:focus {
  border-color: var(--green); box-shadow: 0 0 0 3px rgba(46,125,50,.12);
}
textarea { resize: vertical; min-height: 100px; line-height: 1.5; }

/* ── Drop zone ── */
.drop-zone { border: 1.5px dashed var(--border); border-radius: 9px; padding: 1.75rem 1rem; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; }
.drop-zone:hover, .drop-zone.over { border-color: var(--green); background: var(--green-pale); }
.drop-zone.has-file { border-style: solid; border-color: var(--green); background: var(--green-lite); }
.drop-icon { font-size: 26px; margin-bottom: .4rem; }
.drop-main { font-size: 14px; font-weight: 500; color: var(--text); }
.drop-sub  { font-size: 12px; color: var(--faint); margin-top: 3px; }
.drop-badge { display: inline-flex; align-items: center; gap: 5px; margin-top: 8px; background: var(--green); color: white; padding: 4px 12px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.drop-badge svg { width: 13px; height: 13px; fill: white; }

/* ── Preview box ── */
.preview-box { margin-top: .75rem; background: var(--green-lite); border: 1px solid var(--green-bdr); border-radius: 8px; padding: .75rem 1rem; font-size: 13px; color: var(--green); display: none; }
.preview-box.show { display: block; }
.preview-numbers { font-size: 12px; color: var(--muted); margin-top: 4px; max-height: 80px; overflow-y: auto; line-height: 1.8; }

/* ── Recipient rows ── */
.recipients-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: .75rem; }
.recipient-row   { display: flex; gap: 8px; align-items: center; }
.recipient-row input { flex: 1; }
.btn-remove { width: 32px; height: 32px; flex-shrink: 0; border: 1px solid var(--border); border-radius: 7px; background: transparent; color: var(--faint); cursor: pointer; font-size: 18px; display: flex; align-items: center; justify-content: center; transition: border-color .15s, color .15s, background .15s; }
.btn-remove:hover { border-color: var(--red); color: var(--red); background: var(--red-lite); }
.btn-add-row { width: 100%; padding: 8px; font-size: 13px; color: var(--green); background: transparent; border: 1px dashed var(--green-bdr); border-radius: 7px; cursor: pointer; transition: background .15s; }
.btn-add-row:hover { background: var(--green-lite); }

/* ── Two col ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 1rem; }

/* ── Toggle ── */
.divider { height: 1px; background: var(--border); margin: .9rem 0; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; }
.toggle-info p     { font-size: 13px; color: var(--muted); }
.toggle-info small { font-size: 11px; color: var(--faint); }
.toggle { position: relative; width: 38px; height: 22px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.slider { position: absolute; inset: 0; background: #ccc; border-radius: 11px; cursor: pointer; transition: background .2s; }
.slider::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: white; border-radius: 50%; transition: transform .2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.toggle input:checked + .slider { background: var(--green); }
.toggle input:checked + .slider::before { transform: translateX(16px); }

/* ── SMS char counter ── */
.msg-footer { display: flex; justify-content: space-between; margin-top: 6px; }
.char-count { font-size: 12px; color: var(--faint); }
.char-count.warn { color: #F57F17; }
.char-count.over { color: var(--red); }
.sms-parts { font-size: 12px; color: var(--muted); }

/* ── Balance pill ── */
.balance-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--green); background: var(--green-lite); border: 1px solid var(--green-bdr); border-radius: 99px; padding: 4px 12px; margin-bottom: 1rem; cursor: pointer; }
.balance-pill:hover { background: #C8E6C9; }

/* ── Send button ── */
.btn-send { width: 100%; padding: 13px; background: var(--green); color: white; border: none; border-radius: 9px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background .15s, transform .1s; display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn-send:hover    { background: var(--green-mid); }
.btn-send:active   { transform: scale(.98); }
.btn-send:disabled { background: #B0BEC5; cursor: not-allowed; }
.btn-send svg { width: 18px; height: 18px; fill: white; }

/* ── Status box ── */
.status-box { border-radius: 9px; padding: 1rem 1.25rem; font-size: 13px; margin-top: 1rem; display: none; }
.status-box.success { background: var(--green-lite); border: 1px solid var(--green-bdr); color: #1B5E20; }
.status-box.error   { background: var(--red-lite);   border: 1px solid var(--red-bdr);   color: var(--red); }
.status-box.loading { background: #FAFCFA; border: 1px solid var(--border); color: var(--muted); }
.status-box strong  { display: block; margin-bottom: .4rem; font-size: 14px; }
.status-box pre { font-family: "SF Mono", "Fira Code", monospace; font-size: 12px; white-space: pre-wrap; word-break: break-all; opacity: .85; }

/* ── Progress bar ── */
.progress-wrap { margin-top: .75rem; display: none; }
.progress-wrap.show { display: block; }
.progress-bar-bg   { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-bottom: 5px; }
.progress-bar-fill { height: 100%; background: var(--green); border-radius: 3px; transition: width .3s; width: 0%; }
.progress-text { font-size: 12px; color: var(--muted); }

/* ── Footer ── */
footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border); text-align: center; font-size: 11.5px; color: var(--faint); line-height: 1.8; }
footer a { color: var(--green); text-decoration: none; }
footer a:hover { text-decoration: underline; }

@keyframes spin { to { transform: rotate(360deg); } }