/* Reset and General Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

:root {
    --bg-main: #0B0E17;
    --bg-card: rgba(22, 28, 45, 0.65);
    --bg-nav: rgba(11, 14, 23, 0.9);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 122, 0, 0.25);
    
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    --accent-orange: #FF7A00;
    --accent-gold: #FFA800;
    --accent-gradient: linear-gradient(135deg, #FF7A00 0%, #FFA800 100%);
    
    --color-ok: #00E5A3;
    --color-warn: #FFB800;
    --color-danger: #FF4D4D;
    
    --font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-family);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Glow Effects */
.bg-glow {
    position: absolute;
    width: 650px;
    height: 650px;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}

.bg-glow-1 {
    top: -150px;
    right: -100px;
    background: radial-gradient(circle, var(--accent-orange), transparent 70%);
}

.bg-glow-2 {
    bottom: -200px;
    left: -150px;
    background: radial-gradient(circle, var(--accent-gold), transparent 70%);
}

/* Header & Navbar */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.25rem 5%;
    background-color: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-icon {
    color: var(--accent-orange);
    font-size: 1.6rem;
    filter: drop-shadow(0 0 8px rgba(255, 122, 0, 0.4));
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.25rem 0;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link.active {
    color: var(--accent-orange);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.nav-title-dash {
    font-weight: 700;
    color: var(--accent-orange);
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.9rem 1.75rem;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #000;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 122, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.btn-danger {
    background: rgba(255, 77, 77, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(255, 77, 77, 0.25);
}

.btn-danger:hover {
    background: rgba(255, 77, 77, 0.25);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Layout Views */
.view-container {
    margin-top: 80px;
    padding: 3rem 5%;
    max-width: 1300px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    gap: 6rem;
    animation: fadeIn 0.4s ease-out;
}

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

.hidden {
    display: none !important;
}

/* Hero Section */
.hero-section {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    padding: 2rem 0;
}

.hero-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
}

.badge {
    background: rgba(255, 122, 0, 0.08);
    color: var(--accent-orange);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(255, 122, 0, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-orange);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(255,122,0,0.7); }
    70% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 0 8px rgba(255,122,0,0); }
    100% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(255,122,0,0); }
}

.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
}

.hero-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Hero Graphic */
.hero-image-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.mining-graphic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}

.graphic-node {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    width: 80%;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.graphic-node.active {
    border-color: rgba(255, 122, 0, 0.3);
    background: rgba(255, 122, 0, 0.05);
}

.graphic-node i {
    font-size: 1.4rem;
    color: var(--accent-orange);
}

.graphic-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--accent-orange), var(--border-color));
}

/* Project Description */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.section-header h2 {
    font-size: 2.3rem;
    font-weight: 800;
}

.section-header p {
    color: var(--text-secondary);
    max-width: 600px;
    font-size: 1.05rem;
}

.project-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: all 0.3s ease;
}

.detail-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
}

.card-icon {
    font-size: 2.2rem;
    color: var(--accent-orange);
    margin-bottom: 1.5rem;
}

.detail-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.detail-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Philosophy (Mission/Vision) */
.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.philosophy-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.philosophy-card h2 {
    font-size: 2rem;
    color: var(--accent-orange);
    font-weight: 800;
}

.philosophy-card p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Pros and Cons */
.analysis-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.analysis-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.analysis-box h3 {
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.analysis-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.analysis-box li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.analysis-box li strong {
    color: var(--text-primary);
}

.analysis-box i {
    font-size: 1.1rem;
}

.text-green {
    color: var(--color-ok);
}

.text-red {
    color: var(--color-danger);
}

/* Login Card Section */
.login-section {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}

.login-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.login-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.login-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon-wrapper i {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.input-icon-wrapper input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
}

.form-group select,
.form-group textarea {
    padding-left: 1rem; /* select and textarea do not have icons */
}

.input-icon-wrapper input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-orange);
    background-color: rgba(255, 255, 255, 0.05);
}

.login-error {
    background: rgba(255, 77, 77, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(255, 77, 77, 0.2);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ========================================= */
/* PRIVATE DASHBOARD VIEW                    */
/* ========================================= */

.dashboard-hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2.5rem;
}

.dash-welcome {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    max-width: 600px;
}

.dash-welcome h2 {
    font-size: 2.2rem;
    font-weight: 800;
}

.dash-welcome p {
    color: var(--text-secondary);
}

.dash-stats {
    display: flex;
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 2rem;
    text-align: center;
    min-width: 130px;
}

.stat-num {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
}

.stat-txt {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

/* Machinery Telemetry Grid */
.dashboard-grid-section {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.dash-title-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dash-title-row h3 {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dash-title-row p {
    color: var(--text-secondary);
}

.machinery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2rem;
}

.machine-dash-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.machine-dash-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255,122,0,0.3);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card-status-indicator {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pulse-indicator {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.pulse-indicator.green { color: var(--color-ok); }
.pulse-indicator.orange { color: var(--color-warn); }
.pulse-indicator.red { color: var(--color-danger); }

.pulse-indicator.green i { animation: pulseGreen 2s infinite; }
.pulse-indicator.orange i { animation: pulseOrange 2s infinite; }
.pulse-indicator.red i { animation: pulseRed 2s infinite; }

@keyframes pulseGreen {
    0% { filter: drop-shadow(0 0 0 var(--color-ok)); opacity: 0.6; }
    50% { filter: drop-shadow(0 0 6px var(--color-ok)); opacity: 1; }
    100% { filter: drop-shadow(0 0 0 var(--color-ok)); opacity: 0.6; }
}

@keyframes pulseOrange {
    0% { filter: drop-shadow(0 0 0 var(--color-warn)); opacity: 0.6; }
    50% { filter: drop-shadow(0 0 6px var(--color-warn)); opacity: 1; }
    100% { filter: drop-shadow(0 0 0 var(--color-warn)); opacity: 0.6; }
}

@keyframes pulseRed {
    0% { filter: drop-shadow(0 0 0 var(--color-danger)); opacity: 0.6; }
    50% { filter: drop-shadow(0 0 6px var(--color-danger)); opacity: 1; }
    100% { filter: drop-shadow(0 0 0 var(--color-danger)); opacity: 0.6; }
}

.server-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.machine-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.machine-meta h4 {
    font-size: 1.25rem;
    font-weight: 700;
}

.category-tag {
    color: var(--accent-orange);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.description-txt {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.health-gauge {
    display: grid;
    grid-template-columns: 1fr 1.5fr 0.4fr;
    align-items: center;
    gap: 0.75rem;
}

.gauge-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.gauge-bar-wrapper {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

.gauge-fill {
    height: 100%;
    background-color: var(--color-ok);
    border-radius: 10px;
}

.gauge-fill.warn { background-color: var(--color-warn); }
.gauge-fill.critical { background-color: var(--color-danger); }

.gauge-percentage {
    font-size: 0.9rem;
    font-weight: 700;
    text-align: right;
}

.telemetry-readings {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.reading-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.val-txt {
    font-weight: 600;
    color: var(--text-primary);
}

/* Node Registration Section */
.register-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    backdrop-filter: blur(10px);
}

.register-layout {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
}

.register-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.register-info h3 {
    font-size: 1.6rem;
    font-weight: 800;
}

.register-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.mqtt-topic-example {
    background: rgba(255, 122, 0, 0.04);
    border: 1px solid rgba(255, 122, 0, 0.12);
    border-radius: 8px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mqtt-topic-example h4 {
    font-size: 0.85rem;
    color: var(--accent-orange);
    text-transform: uppercase;
    font-weight: 700;
}

.mqtt-topic-example code {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-primary);
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-row .form-group {
    margin: 0;
}

.register-form textarea {
    padding-left: 1rem;
}

/* Footer Styling */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: #06080F;
    padding: 2rem 5%;
    margin-top: 6rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-orange);
}

.separator {
    color: var(--border-color);
}

/* Responsive Layouts */
@media (max-width: 992px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .philosophy-grid,
    .analysis-grid,
    .register-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .nav-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .dashboard-hero {
        flex-direction: column;
        align-items: flex-start;
    }
}