/* Modern Premium Glassmorphism Design System */
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Tokens */
    --bg-dark: hsl(222, 28%, 5%);
    --bg-darker: hsl(222, 28%, 3%);
    --bg-card: hsla(222, 20%, 10%, 0.6);
    --bg-card-hover: hsla(222, 20%, 14%, 0.85);
    
    --neon-cyan: hsl(180, 100%, 50%);
    --neon-cyan-glow: hsla(180, 100%, 50%, 0.25);
    --neon-magenta: hsl(315, 100%, 50%);
    --neon-magenta-glow: hsla(315, 100%, 50%, 0.25);
    --neon-purple: hsl(270, 95%, 60%);
    
    --success: hsl(145, 80%, 50%);
    --warning: hsl(45, 100%, 50%);
    --danger: hsl(355, 90%, 55%);
    
    --text-white: hsl(0, 0%, 98%);
    --text-muted: hsl(220, 14%, 68%);
    --text-dark: hsl(220, 20%, 40%);
    
    --border-color: hsla(222, 15%, 25%, 0.4);
    --border-glow: hsla(180, 100%, 50%, 0.2);
    
    --font-sans: 'Inter', sans-serif;
    --font-title: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset and Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, hsla(270, 100%, 30%, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, hsla(180, 100%, 30%, 0.12) 0px, transparent 50%);
    color: var(--text-white);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Scrollbar Style */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--neon-cyan);
}

/* Header & Navigation */
header {
    background: hsla(222, 28%, 3%, 0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-white);
}

.logo span {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav {
    display: flex;
    gap: 1.8rem;
    align-items: center;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    position: relative;
    padding: 0.2rem 0;
}

nav a:hover, nav a.active {
    color: var(--text-white);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
    transition: var(--transition-smooth);
}

nav a:hover::after, nav a.active::after {
    width: 100%;
}

.btn-header {
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.btn-login {
    color: var(--text-white);
    border: 1px solid var(--border-color);
}

.btn-login:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan-glow);
}

.btn-portal {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: var(--bg-darker);
    border: none;
}

.btn-portal:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--neon-cyan-glow);
    color: var(--text-white);
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 1rem;
    background: hsla(222, 15%, 20%, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 30px;
}

.user-badge .username {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-badge .credits {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--neon-cyan);
    background: var(--neon-cyan-glow);
    padding: 0.15rem 0.6rem;
    border-radius: 20px;
    border: 1px solid hsla(180, 100%, 50%, 0.3);
}

/* Core Container Layout */
main {
    margin-top: 5rem;
    padding: 2.5rem 5%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Glassmorphism Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: var(--border-glow);
    box-shadow: 0 8px 32px 0 rgba(0, 255, 255, 0.05);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 1rem;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.3);
}

.btn-secondary {
    background: hsla(222, 10%, 15%, 0.6);
    color: var(--text-white);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--neon-cyan);
    background: hsla(222, 10%, 20%, 0.8);
}

.btn-danger {
    background: var(--danger);
    color: var(--text-white);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.2);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Typography & Layout Modules */
h1, h2, h3, h4 {
    font-family: var(--font-title);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
}

.gradient-text {
    background: linear-gradient(135deg, var(--neon-cyan) 30%, var(--neon-magenta) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
}

/* Forms & Fields */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 550;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: hsla(222, 15%, 8%, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-white);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 8px var(--neon-cyan-glow);
}

.form-input::placeholder {
    color: var(--text-dark);
}

/* Landing Page Grid & Hero */
.hero-section {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
    padding: 4rem 0;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-glow-blob {
    position: absolute;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--neon-cyan-glow) 0%, transparent 70%);
    filter: blur(40px);
    z-index: -1;
}

.gpu-card {
    width: 100%;
    max-width: 480px;
    border-radius: 20px;
    background: linear-gradient(135deg, hsla(222, 20%, 15%, 0.85), hsla(222, 20%, 10%, 0.95));
    border: 1px solid var(--border-color);
    padding: 2rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.gpu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
}

.gpu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.gpu-status-pulse {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--success);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--success);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 15px var(--success); }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.gpu-detail-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.gpu-label {
    color: var(--text-muted);
}

.gpu-val {
    font-weight: 600;
    font-family: var(--font-mono);
}

/* Features grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    text-align: left;
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: var(--neon-cyan-glow);
    color: var(--neon-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    border: 1px solid hsla(180, 100%, 50%, 0.2);
}

/* Auth Cards */
.auth-container {
    max-width: 450px;
    margin: 4rem auto;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 0.8rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition-smooth);
    border-bottom: 2px solid transparent;
}

.auth-tab.active {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
}

/* Dashboard Panel */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.grid-full-width {
    grid-column: span 2;
}

.metric-bar {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.metric-card {
    flex: 1;
    text-align: center;
    padding: 1.5rem;
}

.metric-value {
    font-family: var(--font-title);
    font-size: 2.2rem;
    font-weight: 800;
    margin-top: 0.5rem;
    background: linear-gradient(135deg, var(--text-white), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Tables & Logs */
.table-container {
    overflow-x: auto;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

th {
    color: var(--text-muted);
    font-weight: 600;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

tr:hover td {
    background: hsla(222, 15%, 15%, 0.2);
}

.status-badge {
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-success {
    background: hsla(145, 80%, 50%, 0.15);
    color: var(--success);
    border: 1px solid hsla(145, 80%, 50%, 0.3);
}

.status-danger {
    background: hsla(355, 90%, 55%, 0.15);
    color: var(--danger);
    border: 1px solid hsla(355, 90%, 55%, 0.3);
}

/* Sandbox Visualizer Layout */
.sandbox-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2.5rem;
    align-items: start;
}

/* Drag Drop Box */
.drag-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem 1.5rem;
    text-align: center;
    cursor: pointer;
    background: hsla(222, 15%, 6%, 0.5);
    transition: var(--transition-smooth);
}

.drag-drop-zone.dragover {
    border-color: var(--neon-cyan);
    background: var(--neon-cyan-glow);
}

.drag-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.drag-text {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.drag-subtext {
    font-size: 0.8rem;
    color: var(--text-dark);
}

.simulation-presets {
    margin-top: 1.5rem;
}

.preset-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.btn-preset {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
    background: hsla(222, 10%, 15%, 0.4);
    color: var(--text-white);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-preset:hover {
    border-color: var(--neon-magenta);
    box-shadow: 0 0 8px var(--neon-magenta-glow);
}

.btn-preset.active {
    background: var(--neon-magenta);
    border-color: var(--neon-magenta);
    color: var(--text-white);
}

/* Visualization Display */
.spectrogram-display {
    width: 100%;
    aspect-ratio: 1;
    max-width: 400px;
    margin: 0 auto 1.5rem;
    border-radius: 12px;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.spectrogram-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.spectrogram-placeholder {
    text-align: center;
    color: var(--text-dark);
    padding: 2rem;
}

.spectrogram-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--border-color), var(--text-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Confidence bars */
.confidence-container {
    margin-top: 1rem;
}

.confidence-row {
    margin-bottom: 0.9rem;
}

.confidence-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 550;
    margin-bottom: 0.25rem;
}

.confidence-track {
    width: 100%;
    height: 8px;
    background: hsla(222, 10%, 15%, 0.8);
    border-radius: 4px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    border-radius: 4px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.fill-cyan {
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
    box-shadow: 0 0 8px var(--neon-cyan-glow);
}

.fill-gray {
    background: var(--border-color);
}

/* Code Console Tab Module */
.code-console {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-top: 2rem;
}

.console-tabs {
    display: flex;
    background: hsla(222, 28%, 2%, 0.8);
    border-bottom: 1px solid var(--border-color);
}

.console-tab {
    padding: 0.5rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--text-dark);
    border-right: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.console-tab.active {
    color: var(--neon-cyan);
    background: var(--bg-darker);
}

.console-body {
    padding: 1rem;
    overflow-x: auto;
}

.console-body pre {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Alert Notification Prompt */
.alert-popup {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 550;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateY(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.alert-popup.show {
    transform: translateY(0);
}

.alert-popup.success {
    background: hsla(145, 80%, 15%, 0.85);
    border: 1px solid var(--success);
    color: var(--text-white);
}

.alert-popup.error {
    background: hsla(355, 90%, 15%, 0.85);
    border: 1px solid var(--danger);
    color: var(--text-white);
}

/* Billing Slider and tiers */
.billing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.tier-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tier-card.featured {
    border-color: var(--neon-magenta);
    position: relative;
}

.tier-card.featured::after {
    content: 'RECOMMENDED';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--neon-magenta);
    font-family: var(--font-title);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.tier-price {
    font-size: 2.5rem;
    font-family: var(--font-title);
    font-weight: 800;
    margin: 1rem 0;
}

.tier-price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.tier-credits {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--neon-cyan);
    margin-bottom: 1.5rem;
}

/* Custom slider */
.custom-recharge-panel {
    background: hsla(222, 15%, 8%, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 3rem;
}

.slider-wrapper {
    margin: 2rem 0;
    position: relative;
}

input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]:focus {
    outline: none;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    cursor: pointer;
    background: hsla(222, 10%, 18%, 0.8);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

input[type=range]::-webkit-slider-thumb {
    height: 22px;
    width: 22px;
    border-radius: 50%;
    background: var(--neon-cyan);
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -8px;
    box-shadow: 0 0 10px var(--neon-cyan);
    transition: var(--transition-smooth);
}

input[type=range]::-webkit-slider-thumb:hover {
    background: var(--neon-magenta);
    box-shadow: 0 0 15px var(--neon-magenta);
}

.slider-values {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    font-size: 1.1rem;
}

.slider-val-box {
    text-align: center;
    background: hsla(222, 10%, 15%, 0.5);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
}

/* Interactive Card Terminal Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 3, 5, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 90%;
    max-width: 480px;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.modal-close:hover {
    color: var(--neon-cyan);
}

.card-terminal {
    width: 100%;
    height: 180px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--neon-purple), hsl(222, 35%, 15%));
    border: 1px solid hsla(270, 95%, 60%, 0.3);
    padding: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    color: var(--text-white);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-chip {
    width: 40px;
    height: 30px;
    border-radius: 4px;
    background: linear-gradient(135deg, hsl(45, 100%, 75%), hsl(45, 100%, 40%));
}

.card-number-display {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    letter-spacing: 2px;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    text-transform: uppercase;
}

/* Footer Section */
footer {
    text-align: center;
    padding: 3rem 0;
    margin-top: 5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-dark);
    font-size: 0.85rem;
}

footer a {
    color: var(--text-muted);
    text-decoration: none;
}

footer a:hover {
    color: var(--neon-cyan);
}

/* Responsive Scaling */
@media (max-width: 900px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    .hero-visual {
        order: -1;
    }
    .section-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .sandbox-layout {
        grid-template-columns: 1fr;
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .grid-full-width {
        grid-column: span 1;
    }
    .metric-bar {
        flex-direction: column;
        gap: 1rem;
    }
    .billing-grid {
        grid-template-columns: 1fr;
    }
}