:root {
  --ikc-dark: #0b1f3a;
  --ikc-blue: #123a6b;
  --ikc-accent: #1e88e5;
  --ikc-accent-2: #00c2ff;
  --ikc-bg: #0e1726;
  --ikc-panel: #16233a;
  --ikc-panel-2: #1c2c47;
  --ikc-text: #e8eef7;
  --ikc-muted: #9fb2cc;
  --ikc-border: #24384f;
  --ikc-danger: #ff5252;
  --ikc-ok: #33d17a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #16305a 0%, var(--ikc-bg) 60%);
  color: var(--ikc-text);
  min-height: 100vh;
}

a { color: var(--ikc-accent-2); text-decoration: none; }

/* ----------------------- LOGIN ----------------------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: linear-gradient(180deg, var(--ikc-panel) 0%, var(--ikc-panel-2) 100%);
  border: 1px solid var(--ikc-border);
  border-radius: 16px;
  padding: 36px 30px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.brand {
  text-align: center;
  margin-bottom: 26px;
}
.brand .logo-badge {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--ikc-accent) 0%, var(--ikc-accent-2) 100%);
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 8px 24px rgba(30, 136, 229, 0.4);
  letter-spacing: 1px;
}
.brand h1 {
  font-size: 22px;
  margin: 0;
  letter-spacing: 0.5px;
}
.brand p {
  color: var(--ikc-muted);
  font-size: 13px;
  margin: 6px 0 0;
}

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 13px;
  color: var(--ikc-muted);
  margin-bottom: 6px;
}
.field input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--ikc-border);
  background: #0d1626;
  color: var(--ikc-text);
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus {
  border-color: var(--ikc-accent);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.2);
}

.btn {
  width: 100%;
  padding: 13px 16px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--ikc-accent) 0%, var(--ikc-accent-2) 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.08s, filter 0.15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.msg {
  margin-top: 14px;
  font-size: 13px;
  text-align: center;
  min-height: 18px;
}
.msg.error { color: var(--ikc-danger); }
.msg.ok { color: var(--ikc-ok); }

.foot {
  margin-top: 22px;
  text-align: center;
  font-size: 11px;
  color: var(--ikc-muted);
}

/* ----------------------- EXPLORADOR ----------------------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  background: var(--ikc-panel);
  border-bottom: 1px solid var(--ikc-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .logo-badge {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--ikc-accent) 0%, var(--ikc-accent-2) 100%);
  font-weight: 800; color: #fff;
}
.topbar h1 { font-size: 16px; margin: 0; }
.topbar .spacer { flex: 1; }
.topbar .user { color: var(--ikc-muted); font-size: 13px; }
.btn-sm {
  padding: 8px 14px; font-size: 13px; width: auto;
  border-radius: 8px; border: 1px solid var(--ikc-border);
  background: var(--ikc-panel-2); color: var(--ikc-text); cursor: pointer;
}
.btn-sm:hover { border-color: var(--ikc-accent); }

.container { padding: 18px; max-width: 1100px; margin: 0 auto; }

.breadcrumbs {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  font-size: 14px; margin-bottom: 14px; color: var(--ikc-muted);
}
.breadcrumbs a { cursor: pointer; }
.breadcrumbs .sep { color: var(--ikc-border); }

.toolbar { display: flex; gap: 10px; margin-bottom: 12px; align-items: center; }
.search {
  flex: 1; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--ikc-border); background: #0d1626; color: var(--ikc-text);
}

.file-list {
  border: 1px solid var(--ikc-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--ikc-panel);
}
.row {
  display: grid;
  grid-template-columns: 1fr 130px 180px 150px;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--ikc-border);
  font-size: 14px;
}
.row:last-child { border-bottom: none; }
.row.head { color: var(--ikc-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; background: var(--ikc-panel-2); }
.row .name { display: flex; align-items: center; gap: 10px; min-width: 0; }
.row .name .icon { font-size: 18px; }
.row .name .label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .name.dir .label { cursor: pointer; color: var(--ikc-text); font-weight: 600; }
.row .name.dir .label:hover { color: var(--ikc-accent-2); }
.row .size, .row .date { color: var(--ikc-muted); font-size: 13px; }
.row .actions { display: flex; gap: 8px; justify-content: flex-end; }
.row .actions a { font-size: 13px; padding: 5px 10px; border: 1px solid var(--ikc-border); border-radius: 7px; cursor: pointer; }
.row .actions a:hover { border-color: var(--ikc-accent); }

.empty { padding: 40px; text-align: center; color: var(--ikc-muted); }

@media (max-width: 720px) {
  .row { grid-template-columns: 1fr auto; }
  .row .size, .row .date { display: none; }
  .row.head .size, .row.head .date { display: none; }
}

/* ----------------------- MODAL CONFIGURACIÓN ----------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 10, 20, 0.72);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal-card {
  width: 100%;
  max-width: 400px;
  background: linear-gradient(180deg, var(--ikc-panel) 0%, var(--ikc-panel-2) 100%);
  border: 1px solid var(--ikc-border);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.modal-head h2 { font-size: 18px; margin: 0; }
.modal-close {
  background: transparent;
  border: none;
  color: var(--ikc-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}
.modal-close:hover { color: var(--ikc-text); background: var(--ikc-panel-2); }
.modal-desc { color: var(--ikc-muted); font-size: 13px; margin: 4px 0 18px; }

/* ----------------------- TARJETAS DE ALMACENAMIENTO ----------------------- */
.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: linear-gradient(180deg, var(--ikc-panel) 0%, var(--ikc-panel-2) 100%);
  border: 1px solid var(--ikc-border);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.stat-card.used { border-top: 3px solid var(--ikc-accent); }
.stat-card.free { border-top: 3px solid var(--ikc-ok); }
.stat-top {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ikc-muted);
  font-size: 13px;
  margin-bottom: 10px;
}
.stat-icon { font-size: 16px; }
.stat-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.3px;
  margin-bottom: 12px;
}
.stat-bar {
  height: 8px;
  background: #0d1626;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 8px;
}
.stat-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--ikc-accent) 0%, var(--ikc-accent-2) 100%);
  border-radius: 6px;
  transition: width 0.5s ease;
}
.stat-bar-fill.free-fill {
  background: linear-gradient(90deg, #2aa866 0%, var(--ikc-ok) 100%);
}
.stat-sub { color: var(--ikc-muted); font-size: 12px; }

@media (max-width: 620px) {
  .stats { grid-template-columns: 1fr; }
}