/* ═══════════════════════════════════════════════════════════
   SMS Sender Pro — Stylesheet
   ═══════════════════════════════════════════════════════════ */

/* ─── Variables / Design Tokens ─────────────────────────── */
:root {
  --bg-base:        #0c0e14;
  --bg-surface:     #141720;
  --bg-card:        #1a1e2e;
  --bg-card-hover:  #1f2438;
  --bg-input:       #0f1118;

  --border:         rgba(255,255,255,0.07);
  --border-focus:   rgba(109,92,246,0.6);

  --primary:        #6d5cf6;
  --primary-glow:   rgba(109,92,246,0.25);
  --primary-dark:   #5244c7;
  --secondary:      #22d3ee;
  --success:        #10b981;
  --warning:        #f59e0b;
  --danger:         #ef4444;

  --text-primary:   #f0f2ff;
  --text-secondary: #8891a8;
  --text-muted:     #505972;

  --sidebar-w:      240px;
  --radius:         14px;
  --radius-sm:      8px;
  --transition:     .2s ease;

  --font: 'Inter', system-ui, sans-serif;
}

/* ─── Themes ─────────────────────────────────────────────── */
:root[data-theme="midnight"] {
  --bg-base:        #000000;
  --bg-surface:     #0a0a0c;
  --bg-card:        #111114;
  --bg-card-hover:  #16161c;
  --bg-input:       #050505;
  --primary:        #9b5cf6;
  --border:         rgba(255,255,255,0.05);
}

:root[data-theme="ocean"] {
  --bg-base:        #020617;
  --bg-surface:     #0f172a;
  --bg-card:        #1e293b;
  --bg-card-hover:  #24334a;
  --bg-input:       #0c1a33;
  --primary:        #38bdf8;
  --primary-glow:   rgba(56,189,248,0.25);
  --secondary:      #2dd4bf;
  --border-focus:   #34d399;
}

:root[data-theme="forest"] {
  --bg-base:        #050805;
  --bg-surface:     #091109;
  --bg-card:        #121d12;
  --bg-card-hover:  #1b2a1b;
  --bg-input:       #040a04;
  --primary:        #22c55e;
  --primary-glow:   rgba(34,197,94,0.25);
}

:root[data-theme="sunset"] {
  --bg-base:        #0f0a0a;
  --bg-surface:     #160f11;
  --bg-card:        #23171a;
  --bg-card-hover:  #2d1e22;
  --bg-input:       #090606;
  --primary:        #f43f5e;
  --primary-glow:   rgba(244,63,94,0.25);
  --secondary:      #fb923c;
}

:root[data-theme="light"] {
  --bg-base:        #f3f4f6;
  --bg-surface:     #ffffff;
  --bg-card:        #ffffff;
  --bg-card-hover:  #f9fafb;
  --bg-input:       #f9fafb;
  --text-primary:   #111827;
  --text-secondary: #4b5563;
  --text-muted:     #9ca3af;
  --border:         #e5e7eb;
  --primary:        #4f46e5;
  --primary-glow:   rgba(79,70,229,0.1);
}

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
button, select, input, textarea { font-family: var(--font); }

/* ─── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

/* ═══════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════ */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0; top: 0;
  z-index: 100;
  transition: transform var(--transition);
  padding-bottom: 50px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), #9b59f5);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 20px var(--primary-glow);
}
.logo-icon svg { width: 20px; height: 20px; color: white; }

.logo-text { display: flex; flex-direction: column; }
.logo-title { font-size: 14px; font-weight: 700; letter-spacing: -.3px; }
.logo-sub   { font-size: 11px; color: var(--text-muted); }

/* Nav */
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: pointer;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; opacity: .7; }
.nav-item:hover {
  background: rgba(109,92,246,0.1);
  color: var(--text-primary);
}
.nav-item:hover svg { opacity: 1; }
.nav-item.active {
  background: linear-gradient(135deg, rgba(109,92,246,.25), rgba(109,92,246,.1));
  color: var(--primary);
  border: 1px solid rgba(109,92,246,.2);
}
.nav-item.active svg { opacity: 1; color: var(--primary); }

/* Device badge */
.sidebar-device {
  margin: 16px;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}
.device-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: background var(--transition);
}
.device-dot.online  { background: var(--success); box-shadow: 0 0 8px var(--success); }
.device-dot.offline { background: var(--danger); }
.device-dot.cloud   { background: var(--primary); box-shadow: 0 0 8px var(--primary); animation: cloud-pulse 2s infinite; }

@keyframes cloud-pulse {
  0% { opacity: 1; }
  50% { opacity: 0.6; }
  100% { opacity: 1; }
}
.device-info { display: flex; flex-direction: column; }
.device-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing:.5px; }
.device-name  { font-size: 12px; font-weight: 600; color: var(--text-primary); }

/* ═══════════════════════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════════════════════ */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: 50px;
}

/* Topbar */
.topbar {
  height: 60px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}
.topbar-left  { display: flex; align-items: center; gap: 14px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.page-title   { font-size: 17px; font-weight: 700; letter-spacing: -.4px; }

.menu-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--text-secondary); display: none;
  padding: 6px;
}

.bridge-status {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
}
.status-dot.online  { background: var(--success); }
.status-dot.offline { background: var(--danger); }
.status-dot.connecting { background: var(--warning); animation: pulse 1s infinite alternate; }
.status-dot.cloud   { background: var(--primary); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Pages */
.page { display: none; padding: 28px 28px; flex-direction: column; gap: 24px; }
.page.active { display: flex; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ─── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color var(--transition);
}
.card:hover { border-color: rgba(109,92,246,.2); }
.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.card-title {
  font-size: 15px;
  font-weight: 700;
  flex: 1;
  letter-spacing: -.3px;
}

/* ─── Stats Grid ─────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 16px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(109,92,246,.3);
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
}
.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stat-icon svg { width: 22px; height: 22px; }
.stat-icon.purple { background: rgba(109,92,246,.15); color: var(--primary); }
.stat-icon.green  { background: rgba(16,185,129,.15);  color: var(--success); }
.stat-icon.red    { background: rgba(239,68,68,.15);   color: var(--danger);  }
.stat-icon.blue   { background: rgba(34,211,238,.15);  color: var(--secondary); }
.stat-info { display: flex; flex-direction: column; }
.stat-value { font-size: 26px; font-weight: 800; letter-spacing: -.5px; }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ─── Progress ───────────────────────────────────────────── */
.progress-container { margin-bottom: 14px; }
.progress-bar-wrap {
  height: 8px;
  background: rgba(255,255,255,.06);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 8px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #9b59f5);
  border-radius: 100px;
  transition: width .5s ease;
  box-shadow: 0 0 12px var(--primary-glow);
}
.progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
}
.current-sending {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse-dot 1.2s infinite;
  flex-shrink: 0;
}

/* ─── Campaign Controls ──────────────────────────────────── */
.campaign-controls { display: flex; gap: 8px; }

/* ─── Devices List ───────────────────────────────────────── */
.devices-list { display: flex; flex-direction: column; gap: 8px; }
.device-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.device-item-icon {
  font-size: 22px;
}
.device-item-info { flex: 1; }
.device-item-name  { font-size: 13px; font-weight: 600; }
.device-item-state {
  font-size: 11px;
  color: var(--text-muted);
}
.device-item-serial { font-size: 11px; color: var(--text-muted); font-family: monospace; }

/* ─── Forms ──────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 7px;
}
.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.textarea { resize: vertical; min-height: 110px; line-height: 1.5; }
select.form-control { cursor: pointer; }
option { background: var(--bg-surface); }
.form-hint { font-size: 11px; color: var(--text-muted); margin-top: 5px; }
.char-count { font-size: 11px; font-weight: 400; color: var(--text-muted); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 18px;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: 6px; }
.btn-full { width: 100%; padding: 12px; font-size: 15px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8b74ff);
  color: #fff;
  box-shadow: 0 4px 15px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(109,92,246,.4); }
.btn-primary:active { transform: none; }
.btn-secondary {
  background: rgba(34,211,238,.1);
  color: var(--secondary);
  border: 1px solid rgba(34,211,238,.2);
}
.btn-secondary:hover { background: rgba(34,211,238,.18); }
.btn-ghost {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text-primary); border-color: rgba(109,92,246,.3); }
.btn-warning {
  background: rgba(245,158,11,.1);
  color: var(--warning);
  border: 1px solid rgba(245,158,11,.2);
}
.btn-danger {
  background: rgba(239,68,68,.1);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,.2);
}
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }
.btn-loading .btn-text { display: none; }

/* Spinner */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Badge ──────────────────────────────────────────────── */
.badge {
  background: var(--primary);
  color: white;
  border-radius: 100px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
}

/* ─── Two-col Layout ─────────────────────────────────────── */
.two-col-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 24px; align-items: start; }
.single-sms-wrap { display: flex; justify-content: center; }
.single-sms-card { max-width: 560px; width: 100%; }

/* ─── Add Contact Row ────────────────────────────────────── */
.add-contact-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.add-contact-row .form-control { min-width: 0; }

/* ─── Contacts Table ─────────────────────────────────────── */
.contacts-table-wrap,
.history-table-wrap {
  max-height: 380px;
  overflow-y: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-card);
}
.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid rgba(255,255,255,.04);
  vertical-align: middle;
}
.data-table tr:hover td { background: rgba(255,255,255,.02); }
.data-table .status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
}
.status-pill.sent   { background: rgba(16,185,129,.15); color: var(--success); }
.status-pill.failed { background: rgba(239,68,68,.15);  color: var(--danger);  }
.status-pill.pending{ background: rgba(245,158,11,.15); color: var(--warning); }

.del-btn {
  background: none; border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--transition);
  font-size: 14px;
}
.del-btn:hover { background: rgba(239,68,68,.15); color: var(--danger); }

/* ─── Empty State ────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 48px 20px;
  color: var(--text-muted);
  font-size: 13px;
}
.empty-state.small { padding: 24px 20px; }
.empty-state svg { width: 40px; height: 40px; opacity: .3; }

/* ─── Result Box ─────────────────────────────────────────── */
.result-box {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
}
.result-box.success {
  background: rgba(16,185,129,.1);
  border: 1px solid rgba(16,185,129,.3);
  color: var(--success);
}
.result-box.error {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  color: var(--danger);
}

/* ─── Toast ──────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 18px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
  max-width: 380px;
  box-shadow: 0 10px 40px rgba(0,0,0,.4);
  animation: slide-in .3s ease;
  cursor: pointer;
}
@keyframes slide-in {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger);  }
.toast.info    { border-left: 3px solid var(--primary); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast-icon { font-size: 16px; }
.toast-text { flex: 1; }
.toast-fade-out { animation: fade-out .3s ease forwards; }
@keyframes fade-out { to { opacity: 0; transform: translateX(60px); } }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .two-col-layout { grid-template-columns: 1fr; }
  .campaign-top-row  { grid-template-columns: 1fr; }
  .campaign-bottom-row { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none; }
  .main-content { margin-left: 0; }
  .menu-toggle { display: flex; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .page { padding: 16px; }
  .topbar { padding: 0 16px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .add-contact-row { flex-wrap: wrap; }
}

/* ═══════════════════════════════════════════════════════════
   CAMPAIGN PAGE — nuevos elementos
   ═══════════════════════════════════════════════════════════ */

/* Layout de campaña */
.campaign-top-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.campaign-bottom-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

/* Drop zone */
.drop-zone {
  border: 2px dashed rgba(109,92,246,.35);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: rgba(109,92,246,.04);
  margin-bottom: 16px;
}
.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--primary);
  background: rgba(109,92,246,.1);
  transform: scale(1.01);
}
.drop-zone-icon { font-size: 36px; margin-bottom: 10px; }
.drop-zone-text { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.drop-zone-sub  { font-size: 12px; color: var(--text-muted); }

/* Format info */
.format-info {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.format-title { font-size: 12px; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px; }
.format-cols  { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.col-tag {
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  font-family: monospace;
  background: rgba(109,92,246,.15);
  color: var(--primary);
  border: 1px solid rgba(109,92,246,.25);
}
.col-tag.required {
  background: rgba(16,185,129,.15);
  color: var(--success);
  border-color: rgba(16,185,129,.3);
}
.format-note { font-size: 11px; color: var(--text-muted); line-height: 1.5; }

/* Sent row animation */
@keyframes row-pop {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}
.data-table tbody tr.new-row td {
  animation: row-pop .3s ease;
}

/* Msg cell truncate */
.msg-cell {
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ═══════════════════════════════════════════════════════════
   MODAL CONFIGURATION
   ═══════════════════════════════════════════════════════════ */

.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 440px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: none;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
}

.modal-body .form-group {
  margin-bottom: 16px;
}