/* --- Global Styles & Variables --- */
:root {
    --bg-dark: #0a0e17;
    --bg-card: rgba(18, 26, 44, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-yellow: #f59e0b;
    --accent-purple: #8b5cf6;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --glow-blue: 0 0 15px rgba(59, 130, 246, 0.4);
    --glow-green: 0 0 15px rgba(16, 185, 129, 0.4);
    --glow-red: 0 0 15px rgba(239, 68, 68, 0.4);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* --- Space Starry Background Animation --- */
.stars, .twinkling {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: -10;
}

.stars {
    background: #000 url('https://raw.githubusercontent.com/sarwath/assets/main/stars.png') repeat top center;
    opacity: 0.4;
}

.twinkling {
    background: transparent url('https://raw.githubusercontent.com/sarwath/assets/main/twinkling.png') repeat top center;
    animation: move-twink-back 200s linear infinite;
    opacity: 0.3;
}

@keyframes move-twink-back {
    from { background-position: 0 0; }
    to { background-position: -10000px 5000px; }
}

/* --- Glassmorphism UI Components --- */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Login Form Styling --- */
#login-container {
    width: 100%;
    max-width: 420px;
    display: none;
    margin: 20px;
}

#login-container.active {
    display: block;
    animation: fadeIn 0.5s ease-out forwards;
}

.card-header {
    text-align: center;
    margin-bottom: 28px;
}

.logo {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 72px;
    height: 72px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 20px;
    color: var(--accent-blue);
    margin-bottom: 16px;
    box-shadow: var(--glow-blue);
}

.card-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.card-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.password-wrapper {
    position: relative;
}

.password-wrapper input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(10, 14, 23, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all 0.2s;
}

.password-wrapper input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.error-msg {
    color: var(--accent-red);
    font-size: 13px;
    min-height: 20px;
    margin-bottom: 16px;
}

.primary-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--glow-blue);
    transition: all 0.2s;
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.6);
}

.primary-btn:active {
    transform: translateY(1px);
}

/* --- Dashboard Main Layout --- */
.dashboard-layout {
    display: none;
    width: 100%;
    max-width: 1200px;
    height: 100%;
    min-height: 80vh;
    padding: 20px;
    flex-direction: column;
    gap: 20px;
}

.dashboard-layout.active {
    display: flex;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.system-title {
    display: flex;
    align-items: center;
    gap: 14px;
}

.title-icon {
    color: var(--accent-blue);
}

.system-title h2 {
    font-size: 18px;
    font-weight: 600;
}

.sub-text {
    font-size: 12px;
    color: var(--text-secondary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(10, 14, 23, 0.5);
    padding: 8px 12px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 500;
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.indicator.green {
    background-color: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse-glow 1.5s infinite;
}

.indicator.red {
    background-color: var(--accent-red);
    box-shadow: 0 0 8px var(--accent-red);
}

@keyframes pulse-glow {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
}

.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.3);
}

/* --- Dashboard Layout Grid --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    width: 100%;
}

@media (max-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.grid-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* --- Cards Shared Styles --- */
.dashboard-grid h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.section-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* --- PC Operations Controls Card --- */
.control-card {
    flex-grow: 0;
}

.control-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .control-actions {
        grid-template-columns: 1fr;
    }
}

.action-btn {
    position: relative;
    padding: 24px 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
}

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.action-btn .btn-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2;
    position: relative;
}

.action-btn svg {
    transition: transform 0.3s;
}

.action-btn:hover:not(:disabled) svg {
    transform: scale(1.1);
}

.power-btn {
    background: rgba(16, 185, 129, 0.05);
    color: var(--text-primary);
}

.power-btn svg {
    color: var(--accent-green);
}

.power-btn:hover:not(:disabled) {
    background: rgba(16, 185, 129, 0.12);
    border-color: var(--accent-green);
    box-shadow: var(--glow-green);
}

.restart-btn {
    background: rgba(245, 158, 11, 0.05);
    color: var(--text-primary);
}

.restart-btn svg {
    color: var(--accent-yellow);
}

.restart-btn:hover:not(:disabled) {
    background: rgba(245, 158, 11, 0.12);
    border-color: var(--accent-yellow);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
}

.btn-title {
    font-size: 14px;
    font-weight: 600;
}

.btn-subtitle {
    font-size: 11px;
    color: var(--text-secondary);
}

.action-feedback-hidden {
    opacity: 0;
    height: 0;
    overflow: hidden;
    transition: all 0.3s;
}

.action-feedback-visible {
    opacity: 1;
    height: auto;
    margin-top: 14px;
    padding: 10px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
    border-radius: 8px;
    font-size: 13px;
    text-align: center;
    animation: slideDown 0.3s ease-out;
}

/* --- Environmental Telemetry Card --- */
.sensors-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sensor-group {
    background: rgba(10, 14, 23, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.sensor-title {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sensor-tag {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
}

.dht22-tag {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.telemetry-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.telemetry-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
}

.telemetry-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.telemetry-value-container {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin-bottom: 8px;
}

.telemetry-value-container .value {
    font-size: 24px;
    font-weight: 700;
    font-family: var(--font-mono);
}

.telemetry-value-container .unit {
    font-size: 14px;
    color: var(--text-secondary);
}

.progress-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0;
    border-radius: 2px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.temp-color {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-red));
}

.humi-color {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

/* --- Terminal Console Log Card --- */
.terminal-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 450px;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 14px;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dots .red { background-color: var(--accent-red); }
.terminal-dots .yellow { background-color: var(--accent-yellow); }
.terminal-dots .green { background-color: var(--accent-green); }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 11px;
    font-family: var(--font-sans);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.2s;
}

.text-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.terminal-body {
    flex-grow: 1;
    background: #05070c;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    overflow-y: auto;
    max-height: 420px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.terminal-body::-webkit-scrollbar {
    width: 6px;
}

.terminal-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

.terminal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.log-line {
    word-break: break-all;
    animation: logFadeIn 0.2s ease-out;
}

.log-timestamp {
    color: #4b5563;
    margin-right: 8px;
}

.info-msg { color: var(--accent-blue); }
.warn-msg { color: var(--accent-yellow); }
.error-msg-line { color: var(--accent-red); }
.system-msg { color: var(--text-secondary); }
.success-msg { color: var(--accent-green); }

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes logFadeIn {
    from { opacity: 0; transform: translateX(-4px); }
    to { opacity: 1; transform: translateX(0); }
}

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