/* =====================================================
   WATER VISUALIZATION
   ===================================================== */
.water-container {
    display: flex;
    align-items: center;
    gap: 24px;
}

.water-tank-wrapper {
    flex-shrink: 0;
}

.water-tank {
    width: 90px;
    height: 220px;
    background: linear-gradient(180deg, #dde8f0 0%, #c8dcea 100%);
    border-radius: 45px;
    border: 4px solid rgba(255,255,255,0.9);
    position: relative;
    overflow: hidden;
    box-shadow:
        inset 0 0 20px rgba(110, 147, 179, 0.15),
        0 10px 30px rgba(110, 147, 179, 0.2),
        inset 2px 0 6px rgba(255,255,255,0.5);
}

/* Shimmer / refleksi cahaya di dinding tangki */
.water-tank::before {
    content: '';
    position: absolute;
    top: 5%;
    left: 12px;
    width: 10px;
    height: 55%;
    background: linear-gradient(180deg, rgba(255,255,255,0.6) 0%, rgba(255,255,255,0) 100%);
    border-radius: 10px;
    z-index: 5;
    pointer-events: none;
}

.water-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5%;
    background: var(--water-aman);
    transition: height 1.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 1s ease;
    overflow: hidden;
}

/* ── Wave menggunakan SVG path yang smooth ── */
.wave-container {
    position: absolute;
    top: -18px;
    left: -10%;
    width: 120%;
    height: 22px;
    overflow: hidden;
}

.wave-svg {
    width: 200%;
    height: 100%;
    animation: waveSvg 3s infinite linear;
    fill: inherit;
    opacity: 0.9;
}

.wave-svg-2 {
    position: absolute;
    top: 4px;
    left: -10%;
    width: 200%;
    height: 100%;
    animation: waveSvg2 4.5s infinite linear;
    fill: inherit;
    opacity: 0.5;
}

@keyframes waveSvg {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes waveSvg2 {
    0%   { transform: translateX(0); }
    100% { transform: translateX(50%); }
}

/* ── Bubbles yang naik di dalam air ── */
.bubble {
    position: absolute;
    bottom: 10%;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    animation: bubbleRise var(--dur, 3s) ease-in infinite var(--delay, 0s);
}

@keyframes bubbleRise {
    0%   { transform: translateY(0) scale(1); opacity: 0.6; }
    80%  { opacity: 0.4; }
    100% { transform: translateY(-200px) scale(0.6); opacity: 0; }
}

/* ── Ripple effect di permukaan air ── */
.water-ripple {
    position: absolute;
    top: -2px;
    left: 20%;
    width: 12px;
    height: 4px;
    border-radius: 50%;
    background: rgba(255,255,255,0.35);
    animation: ripple 2s ease-out infinite;
}
.water-ripple:nth-child(2) { left: 55%; animation-delay: 0.8s; width: 8px; }
.water-ripple:nth-child(3) { left: 35%; animation-delay: 1.5s; width: 10px; }

@keyframes ripple {
    0%   { transform: scaleX(1); opacity: 0.5; }
    100% { transform: scaleX(3); opacity: 0; }
}

/* ── Pulse saat SIAGA 1 ── */
.water-fill.siaga1-pulse {
    animation: waterPulse 1s ease-in-out infinite alternate;
}

@keyframes waterPulse {
    from { filter: brightness(1); }
    to   { filter: brightness(1.15); }
}

/* ── Freeze water animation saat offline ── */
.water-tank.sensor-offline .wave-svg,
.water-tank.sensor-offline .wave-svg-2,
.water-tank.sensor-offline .bubble {
    animation-play-state: paused;
}

/* ── Overlay pattern saat sensor offline ── */
.water-tank.sensor-offline::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        rgba(150,150,150,0.06) 0px, rgba(150,150,150,0.06) 4px,
        transparent 4px, transparent 12px
    );
    z-index: 4;
    border-radius: inherit;
}

/* =====================================================
   SENSOR OFFLINE BANNER
   ===================================================== */
.offline-banner {
    display: none;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(40,40,40,0.96) 0%, rgba(28,28,28,0.96) 100%);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    margin-bottom: 4px;
    animation: offlinePulseIn 0.4s ease;
}

.offline-banner.visible {
    display: flex;
}

@keyframes offlinePulseIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.offline-icon-wrap {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(231, 76, 60, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    animation: offlineIconBlink 2s ease-in-out infinite;
}

@keyframes offlineIconBlink {
    0%, 100% { background: rgba(231, 76, 60, 0.15); }
    50%       { background: rgba(231, 76, 60, 0.30); }
}

.offline-icon-wrap svg {
    width: 22px;
    height: 22px;
    fill: #e74c3c;
}

.offline-text {
    flex: 1;
    min-width: 0;
}

.offline-text strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: #f0f0f0;
    margin-bottom: 2px;
}

.offline-text span {
    font-size: 0.78rem;
    color: #aaa;
}

.offline-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #e74c3c;
    flex-shrink: 0;
    animation: offlineDotPulse 1.5s ease-in-out infinite;
}

@keyframes offlineDotPulse {
    0%   { box-shadow: 0 0 0 0 rgba(231,76,60,0.5); }
    70%  { box-shadow: 0 0 0 8px rgba(231,76,60,0); }
    100% { box-shadow: 0 0 0 0 rgba(231,76,60,0); }
}

/* Admin: sensor status badge di summary card */
.sensor-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    margin-top: 8px;
}

.sensor-status-badge.online {
    background: rgba(76,175,80,0.15);
    color: #4caf50;
}

.sensor-status-badge.offline {
    background: rgba(231,76,60,0.15);
    color: #e74c3c;
    box-shadow: 0 0 0 0 rgba(231,76,60,0.4);
    animation: offlineDotPulse 1.5s ease-in-out infinite;
}

.sensor-status-badge .badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
}

/* =====================================================
   LEVEL INFO
   ===================================================== */
.level-info {
    display: flex;
    flex-direction: column;
}

.level-info h3 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.level-value {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-top: 5px;
}

#current-level {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--brand-dark);
    line-height: 1;
    transition: color 0.5s ease;
}

#current-level.siaga1 { color: var(--status-siaga1); }
#current-level.siaga2 { color: var(--status-siaga2); }

.unit {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* =====================================================
   ALERT SECTION
   ===================================================== */
.alert-section {
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.4s ease;
}

.alert-section.status-aman   .alert-icon { background: rgba(76,175,80,0.15);  color: var(--status-aman); }
.alert-section.status-siaga2 .alert-icon { background: rgba(243,156,18,0.15); color: var(--status-siaga2); }
.alert-section.status-siaga1 .alert-icon { background: rgba(231,76,60,0.15);  color: var(--status-siaga1); }
.alert-section.status-offline .alert-icon { background: rgba(150,150,150,0.15); color: #888; }

.alert-section.status-aman    { border-left: 5px solid var(--status-aman); }
.alert-section.status-siaga2  { border-left: 5px solid var(--status-siaga2); }
.alert-section.status-siaga1  { border-left: 5px solid var(--status-siaga1); animation: shake 0.6s cubic-bezier(.36,.07,.19,.97) both; }
.alert-section.status-offline { border-left: 5px solid #888; opacity: 0.7; }

@keyframes shake {
    10%, 90% { transform: translate3d(-1px,0,0); }
    20%, 80%  { transform: translate3d(2px,0,0); }
    30%, 50%, 70% { transform: translate3d(-4px,0,0); }
    40%, 60%  { transform: translate3d(4px,0,0); }
}

.alert-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.alert-text h3 { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }
.alert-text p  { font-size: 1.3rem; font-weight: 700; margin-top: 2px; color: var(--text-primary); }

/* =====================================================
   CHART SECTION
   ===================================================== */
.chart-section h3 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 12px;
}

.chart-container { width: 100%; height: 200px; }

.refresh-time {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

/* =====================================================
   RESPONSIVE - TABLET (768px+)
   ===================================================== */
@media (min-width: 768px) {
    .water-container { gap: 40px; }
    .water-tank { width: 110px; height: 260px; }
    #current-level { font-size: 4.5rem; }
    .chart-container { height: 260px; }
    #view-monitoring > * { max-width: 100%; }
    .offline-banner { padding: 16px 22px; border-radius: 16px; gap: 16px; }
    .offline-icon-wrap { width: 46px; height: 46px; }
    .offline-text strong { font-size: 1rem; }
    .offline-text span   { font-size: 0.82rem; }
}

/* =====================================================
   RESPONSIVE - DESKTOP (1024px+)
   ===================================================== */
@media (min-width: 1024px) {
    .water-container { gap: 48px; }
    .water-tank { width: 120px; height: 280px; border-radius: 60px; }
    #current-level { font-size: 5rem; }
    .chart-container { height: 300px; }
    .alert-icon { width: 60px; height: 60px; }
    .alert-text p { font-size: 1.5rem; }
}