:root {
    --bg:           #000000;
    --bg-elevated:  #1c1c1e;
    --bg-panel:     #2c2c2e;
    --separator:    rgba(84,84,88,0.55);

    --accent:       #007AFF;
    --accent-dim:   rgba(0,122,255,0.18);
    --accent-glow:  rgba(0,122,255,0.35);

    --warn:         #FF9F0A;
    --warn-dim:     rgba(255,159,10,0.18);

    --danger:       #FF3B30;
    --danger-dim:   rgba(255,59,48,0.18);

    --success:      #30D158;
    --success-dim:  rgba(48,209,88,0.18);

    --unreachable:      #8E8E93;
    --unreachable-dim:  rgba(142,142,147,0.18);

    --label:        #ffffff;
    --label-sec:    rgba(235,235,245,0.6);
    --label-ter:    rgba(235,235,245,0.3);

    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

body {
    background: var(--bg);
    color: var(--label);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display',
                 'Helvetica Neue', Arial, sans-serif;
    min-height: 100vh;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

/* ── Toast ───────────────────────────────────────────────── */
#toastContainer {
    position: fixed;
    top: 16px; right: 16px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 16px;
    border-radius: var(--radius-md);
    background: rgba(44,44,46,0.94);
    backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--separator);
    font-size: 13px;
    font-weight: 500;
    min-width: 240px;
    max-width: 360px;
    pointer-events: auto;
    animation: toastIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.toast-icon { font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; }
.toast-msg  { color: var(--label); flex: 1; line-height: 1.4; }

.toast.success .toast-icon { color: var(--success); }
.toast.error   .toast-icon { color: var(--danger); }
.toast.warn    .toast-icon { color: var(--warn); }
.toast.info    .toast-icon { color: var(--accent); }

.toast.fade-out { animation: toastOut 0.25s ease forwards; }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(-10px) scale(0.95); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
    from { opacity: 1; transform: scale(1); }
    to   { opacity: 0; transform: scale(0.92); }
}

/* ── Header ──────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; }

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--separator);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.header-left  { display: flex; align-items: center; gap: 14px; }
.header-right { display: flex; align-items: center; gap: 12px; }

.logo-icon {
    width: 44px; height: 44px;
    background: var(--accent);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.logo-icon svg { width: 22px; height: 22px; color: #fff; }

h1 {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 12px;
    color: var(--label-sec);
}

.summary-badge {
    font-size: 12px;
    font-weight: 600;
    color: var(--label-sec);
    padding: 5px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--separator);
    border-radius: 20px;
}

.btn-refresh {
    background: var(--bg-panel);
    border: 1px solid var(--separator);
    color: var(--label-sec);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    transition: color 0.2s, background 0.2s;
}
.btn-refresh svg { width: 16px; height: 16px; }
.btn-refresh:hover { color: var(--accent); background: var(--accent-dim); }
.btn-refresh.spinning svg { animation: spin 0.8s linear infinite; }

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

/* ── Loading ─────────────────────────────────────────────── */
.loading-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 60px 0;
    color: var(--label-ter);
    font-size: 14px;
}

.spinner {
    width: 28px; height: 28px;
    border: 2px solid var(--separator);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ── Grid de cards ───────────────────────────────────────── */
.vpn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

/* ── Card ────────────────────────────────────────────────── */
.vpn-card {
    background: var(--bg-elevated);
    border: 1px solid var(--separator);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.3s;
}

.vpn-card.is-online  { border-color: rgba(48,209,88,0.35); }
.vpn-card.is-offline { border-color: var(--separator); }
.vpn-card.is-unreachable { border-color: rgba(142,142,147,0.25); }

.card-header {
    padding: 18px 18px 14px;
    border-bottom: 1px solid var(--separator);
}

.card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.vpn-name {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.card-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
}

.vpn-host {
    font-size: 11px;
    color: var(--label-ter);
    font-family: 'SF Mono', 'Menlo', monospace;
}

.last-updated {
    font-size: 11px;
    color: var(--label-ter);
}

/* ── Status badge ────────────────────────────────────────── */
.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: all 0.35s ease;
}

.status-badge.online      { background: var(--success-dim);     color: var(--success); }
.status-badge.offline     { background: var(--danger-dim);      color: var(--danger); }
.status-badge.unreachable { background: var(--unreachable-dim); color: var(--unreachable); }
.status-badge.connecting  { background: var(--warn-dim);        color: var(--warn); }

.status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.status-badge.online .status-dot     { animation: pulse 2s infinite; }
.status-badge.connecting .status-dot { animation: pulse 0.7s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.2; }
}

/* ── Ações ───────────────────────────────────────────────── */
.card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--separator);
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 12px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.18s ease;
}

.btn:active   { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn-icon     { width: 13px; height: 13px; flex-shrink: 0; }

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-glow);
}
.btn-primary:hover:not(:disabled) { background: #1a8aff; }

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid rgba(255,59,48,0.35);
}
.btn-danger:hover:not(:disabled) { background: var(--danger-dim); }

.btn-warning {
    background: var(--warn);
    color: #000;
    font-weight: 700;
    flex-shrink: 0;
}
.btn-warning:hover:not(:disabled) { background: #ffb030; }

/* ── Credenciais ─────────────────────────────────────────── */
.cred-section {
    padding: 14px 18px;
    border-bottom: 1px solid var(--separator);
    background: rgba(0,122,255,0.04);
}

.field { margin-bottom: 10px; }
.field:last-child { margin-bottom: 0; }

.field label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--label-sec);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.field input {
    width: 100%;
    padding: 9px 11px;
    background: var(--bg-panel);
    border: 1px solid var(--separator);
    border-radius: var(--radius-sm);
    color: var(--label);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
}

.field input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.field input::placeholder { color: var(--label-ter); }

/* ── OTP ─────────────────────────────────────────────────── */
.otp-section {
    padding: 14px 18px;
    border-bottom: 1px solid var(--separator);
    background: rgba(255,159,10,0.05);
}

.otp-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--warn);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.otp-pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--warn);
    flex-shrink: 0;
    animation: pulse 0.9s infinite;
}

.otp-row {
    display: flex;
    gap: 8px;
}

.input-otp {
    flex: 1;
    padding: 9px 11px;
    background: var(--bg-panel);
    border: 1px solid rgba(255,159,10,0.4);
    border-radius: var(--radius-sm);
    color: var(--label);
    font-family: 'SF Mono', 'Menlo', monospace;
    font-size: 16px;
    letter-spacing: 0.15em;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
}

.input-otp:focus {
    border-color: var(--warn);
    box-shadow: 0 0 0 3px var(--warn-dim);
}

.input-otp::placeholder { color: var(--label-ter); letter-spacing: 0.05em; }

/* ── Log ─────────────────────────────────────────────────── */
.log-section { padding: 0; }

.btn-log-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 18px;
    background: none;
    border: none;
    color: var(--label-sec);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: color 0.2s, background 0.2s;
}

.btn-log-toggle:hover { color: var(--accent); background: var(--accent-dim); }

.chevron {
    width: 14px; height: 14px;
    transition: transform 0.25s ease;
}

.btn-log-toggle.open .chevron { transform: rotate(180deg); }

.log-box {
    border-top: 1px solid var(--separator);
}

.log-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: var(--bg);
    border-bottom: 1px solid var(--separator);
}

.log-lines-label {
    font-size: 11px;
    color: var(--label-ter);
}

.btn-log-refresh {
    background: none;
    border: none;
    color: var(--label-ter);
    cursor: pointer;
    padding: 3px;
    border-radius: 4px;
    display: flex;
    transition: color 0.2s;
}
.btn-log-refresh svg { width: 13px; height: 13px; }
.btn-log-refresh:hover { color: var(--accent); }

.log-content {
    background: #000;
    color: #4CC2FF;
    font-family: 'SF Mono', 'Fira Code', 'Menlo', monospace;
    font-size: 11px;
    line-height: 1.6;
    padding: 12px 14px;
    max-height: 260px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.log-content::-webkit-scrollbar       { width: 5px; }
.log-content::-webkit-scrollbar-track { background: transparent; }
.log-content::-webkit-scrollbar-thumb { background: rgba(84,84,88,0.5); border-radius: 3px; }

/* ── Empty state ─────────────────────────────────────────── */
.empty-log { color: rgba(235,235,245,0.2); font-style: italic; }

/* ── Auto-reconexão toggle ───────────────────────────────── */
.reconnect-row {
    padding: 10px 16px 14px;
    border-top: 1px solid var(--separator);
}

.reconnect-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.reconnect-toggle input[type="checkbox"] { display: none; }

.toggle-track {
    position: relative;
    width: 42px;
    height: 24px;
    background: rgba(84,84,88,0.4);
    border-radius: 12px;
    transition: background 0.2s;
    flex-shrink: 0;
}

.chk-reconnect:checked + .toggle-track {
    background: var(--success);
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0,0,0,0.35);
    transition: transform 0.2s;
}

.chk-reconnect:checked + .toggle-track .toggle-thumb {
    transform: translateX(18px);
}

.reconnect-label {
    font-size: 13px;
    color: var(--label-sec);
}

/* ── Autenticação ────────────────────────────────────────── */
.auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0,0,0,0.82);
    backdrop-filter: blur(16px) saturate(160%);
}

.auth-card {
    width: 100%;
    max-width: 360px;
    background: var(--bg-elevated);
    border: 1px solid var(--separator);
    border-radius: var(--radius-lg);
    padding: 28px 24px 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
    animation: toastIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.auth-logo {
    width: 48px; height: 48px;
    margin: 0 auto 16px;
    background: var(--accent);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.auth-logo svg { width: 24px; height: 24px; color: #fff; }

#authTitle {
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
}

#authSubtitle {
    font-size: 13px;
    color: var(--label-sec);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.4;
}

.auth-field { margin-bottom: 14px; }

.auth-field label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--label-sec);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.auth-field input {
    width: 100%;
    padding: 11px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--separator);
    border-radius: var(--radius-sm);
    color: var(--label);
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
}

.auth-field input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.auth-error {
    display: none;
    font-size: 12px;
    color: var(--danger);
    margin-bottom: 12px;
    text-align: center;
}
.auth-error.show { display: block; }

.auth-submit {
    width: 100%;
    padding: 12px;
    font-size: 13px;
    margin-top: 4px;
}

.auth-cancel {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 8px;
    background: none;
    border: none;
    color: var(--label-sec);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
}
.auth-cancel:hover { color: var(--label); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
    body { padding: 12px; }
    .vpn-grid { grid-template-columns: 1fr; }
}