:root {
    --bg-dark: #090d16;
    --card-bg: rgba(26, 34, 52, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    --primary-teal: #0ea5e9;
    --primary-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --warning-rose: #f43f5e;
    --warning-amber: #f59e0b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --radius-lg: 20px;
    --radius-md: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    position: relative;
    overflow-x: hidden;
}

/* Dynamic Animated Background Glow */
.app-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #0284c7, #06b6d4);
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #059669, #0d9488);
    bottom: -150px;
    right: -150px;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    position: relative;
    z-index: 1;
}

/* Header Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px 24px;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.92;
}

.logo-icon {
    font-size: 1.8rem;
    color: #38bdf8;
    filter: drop-shadow(0 0 10px rgba(56, 189, 248, 0.5));
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.badge-ai {
    background: linear-gradient(135deg, #0ea5e9, #10b981);
    color: #fff;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 20px;
    margin-left: 4px;
}

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(15, 23, 42, 0.5);
    padding: 6px 10px;
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 18px;
    border-radius: 20px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.3), rgba(16, 185, 129, 0.25));
    border: 1px solid rgba(14, 165, 233, 0.4);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(14, 165, 233, 0.2);
}

.server-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 14px;
    border-radius: 30px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background-color: var(--accent-emerald);
    box-shadow: 0 0 8px var(--accent-emerald);
}

/* Layout Grid */
.main-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
}

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

/* Card Styling */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-header h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #f1f5f9;
}

.card-header .subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Form Styles */
.form-section-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-teal);
    font-weight: 700;
    margin: 20px 0 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-row {
    display: grid;
    gap: 16px;
    margin-bottom: 14px;
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

.grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-group input,
.input-group select {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--primary-teal);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.hint {
    font-size: 0.725rem;
    color: var(--text-muted);
}

/* Live BMI Banner */
.bmi-live-preview {
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    margin-bottom: 10px;
}

.bmi-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
}

.bmi-badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-amber);
}

.bmi-badge.normal {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-emerald);
}

/* Checkbox Card Grid */
.checkbox-card {
    position: relative;
}

.checkbox-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkbox-card label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 14px 10px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.checkbox-card label i {
    font-size: 1.2rem;
}

.checkbox-card input[type="checkbox"]:checked + label {
    background: rgba(14, 165, 233, 0.2);
    border-color: var(--primary-teal);
    color: #fff;
    box-shadow: 0 0 12px rgba(14, 165, 233, 0.2);
}

/* Submit Button */
.btn-primary {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    background: linear-gradient(135deg, #0284c7, #06b6d4);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(6, 182, 212, 0.4);
}

/* Results Container */
.results-container {
    display: flex;
    flex-direction: column;
}

.result-card {
    min-height: 520px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

.empty-icon {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.15);
    margin-bottom: 16px;

}

.loading-state {
    text-align: center;
    align-items: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-teal);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin-bottom: 20px;
}

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

.hidden {
    display: none !important;
}

/* Gauge Meter */
.result-header {
    text-align: center;
    margin-bottom: 24px;
}

.pill-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    border-radius: 20px;
}

.result-header h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-top: 8px;
}

.gauge-section {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.gauge-ring {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: conic-gradient(#10b981 0deg 180deg, rgba(255, 255, 255, 0.05) 180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.2);
    transition: var(--transition);
}

.gauge-ring::before {
    content: '';
    position: absolute;
    width: 124px;
    height: 124px;
    border-radius: 50%;
    background: var(--bg-dark);
}

.gauge-value {
    position: relative;
    z-index: 1;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
}

.gauge-subtitle {
    position: relative;
    z-index: 1;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.risk-badge-box {
    text-align: center;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.risk-badge-box.low-risk {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.risk-badge-box.high-risk {
    background: rgba(244, 63, 94, 0.15);
    color: var(--warning-rose);
    border: 1px solid rgba(244, 63, 94, 0.3);
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.metric-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.metric-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(14, 165, 233, 0.15);
    color: var(--primary-teal);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
}

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-title {
    font-size: 0.725rem;
    color: var(--text-muted);
}

.metric-val {
    font-weight: 700;
    font-size: 0.95rem;
}

.metric-sub {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* Recommendations */
.recommendations-box {
    background: rgba(15, 23, 42, 0.4);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.recommendations-box h4 {
    font-size: 0.875rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.recommendations-box ul {
    list-style: none;
}

.recommendations-box li {
    font-size: 0.825rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 18px;
    position: relative;
    line-height: 1.4;
}

.recommendations-box li::before {
    content: "•";
    color: var(--primary-teal);
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: -2px;
}

/* ============================================================
   PAGE HEADER & HERO SECTION (HOME PAGE)
   ============================================================ */
.hero-card {
    text-align: center;
    padding: 56px 36px 48px;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.22), transparent 70%);
    pointer-events: none;
}

.hero-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(14, 165, 233, 0.12);
    border: 1px solid rgba(14, 165, 233, 0.3);
    color: #38bdf8;
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 18px;
    background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title span {
    background: linear-gradient(135deg, #38bdf8 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 780px;
    margin: 0 auto 32px;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn-cta {
    padding: 15px 32px;
    background: linear-gradient(135deg, #0284c7, #06b6d4);
    color: #ffffff;
    border: none;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    box-shadow: 0 10px 25px rgba(6, 182, 212, 0.35);
    cursor: pointer;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* Hero Stats Bar */
.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item {
    text-align: center;
    padding: 12px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.85rem;
    font-weight: 800;
    color: #38bdf8;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Feature Grid */
.home-section-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    margin: 40px 0 24px;
    color: #f1f5f9;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.feature-box {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-4px);
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 18px;
}

.feature-icon-wrap.emerald {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.feature-icon-wrap.amber {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}

.feature-box h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: #f8fafc;
}

.feature-box p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Workflow Steps (How it Works) */
.workflow-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.workflow-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    position: relative;
    text-align: center;
}

.step-num-badge {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0284c7, #06b6d4);
    color: #fff;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 0.9rem;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

.workflow-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: #f1f5f9;
    margin-bottom: 8px;
}

.workflow-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* ============================================================
   ABOUT PAGE STYLES
   ============================================================ */
.about-header-card {
    text-align: center;
    padding: 40px 30px;
    margin-bottom: 24px;
}

.about-section {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
}

.about-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.about-section-header i {
    font-size: 1.4rem;
    color: #38bdf8;
}

.about-section-header h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    color: #f8fafc;
}

.about-section p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.about-highlight-box {
    background: rgba(14, 165, 233, 0.08);
    border-left: 4px solid #0ea5e9;
    padding: 16px 20px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 16px 0 20px;
    font-size: 0.925rem;
    color: #e2e8f0;
    line-height: 1.6;
}

/* Parameters Grid */
.param-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.param-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-md);
    padding: 18px;
    transition: var(--transition);
}

.param-card:hover {
    border-color: rgba(14, 165, 233, 0.35);
    background: rgba(15, 23, 42, 0.85);
}

.param-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.param-icon {
    font-size: 1.2rem;
    color: #38bdf8;
}

.param-code {
    font-family: monospace;
    background: rgba(255, 255, 255, 0.08);
    color: #34d399;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 6px;
}

.param-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: #f8fafc;
    margin-bottom: 6px;
}

.param-card p {
    font-size: 0.825rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0;
}

.param-type-badge {
    display: inline-block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Algorithm Card */
.algo-card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(14, 165, 233, 0.25);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 18px;
}

.algo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.algo-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: #38bdf8;
    display: flex;
    align-items: center;
    gap: 10px;
}

.algo-accuracy-badge {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #34d399;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

.algo-details-list {
    list-style: none;
    margin-top: 14px;
}

.algo-details-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.algo-details-list li strong {
    color: #f1f5f9;
}

.algo-details-list li::before {
    content: "✓";
    color: #10b981;
    position: absolute;
    left: 0;
    font-weight: 700;
}

/* Formula & Code Box */
.formula-box {
    background: rgba(10, 15, 26, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin: 16px 0;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    color: #38bdf8;
    text-align: center;
}

/* Step-by-step Visual Pipeline */
.pipeline-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 24px 0;
}

.pipeline-step {
    display: flex;
    align-items: center;
    gap: 18px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    transition: var(--transition);
}

.pipeline-step:hover {
    border-color: rgba(14, 165, 233, 0.35);
    background: rgba(15, 23, 42, 0.85);
}

.step-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.step-content h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    color: #f8fafc;
    margin-bottom: 4px;
}

.step-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.45;
}

.pipeline-connector {
    text-align: center;
    color: rgba(14, 165, 233, 0.5);
    font-size: 1.2rem;
    line-height: 1;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 40px;
}

/* ============================================================
   RESPONSIVE QUERIES
   ============================================================ */
@media (max-width: 992px) {
    .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .features-grid, .workflow-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 14px;
        text-align: center;
    }
    .nav-menu {
        width: 100%;
        justify-content: center;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .param-grid {
        grid-template-columns: 1fr;
    }
    .pipeline-step {
        flex-direction: column;
        text-align: center;
    }
}