:root {
    /* Cloud Enterprise Palette (White/Clean) */
    --bg-color: #ffffff;
    --bg-pattern: #f8fafc;
    --text-primary: #1e293b;
    /* Slate 800 */
    --text-secondary: #64748b;
    /* Slate 500 */
    --accent-blue: #2563eb;
    /* Royal Blue */
    --accent-blue-hover: #1d4ed8;
    --border-color: #e2e8f0;
    /* Slate 200 */
    --panel-bg: #ffffff;
    --panel-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --input-bg: #f8fafc;
    --input-focus-ring: rgba(37, 99, 235, 0.2);

    --font-head: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-pattern);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
    line-height: 1.6;
    background-image: radial-gradient(#e2e8f0 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-head);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.brand-text {
    font-size: 2rem;
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-text span {
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

/* Hero Section */
.hero-section {
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #1e293b, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
    margin-bottom: 4rem;
}

.feature-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    border-color: var(--accent-blue);
}

.feature-card h4 {
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1100px;
    /* Wider for features */
}

/* Panels */
.primary-panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem;
    box-shadow: var(--panel-shadow);
    margin-bottom: 2rem;
    transition: box-shadow 0.3s ease;
}

/* Forms - Standard Styles */
.form-section-title {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    color: #94a3b8;
}

.form-section-title:first-child {
    margin-top: 0;
}

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

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="url"],
textarea,
select {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

input:focus,
textarea:focus {
    outline: none;
    background: #fff;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--input-focus-ring);
}

/* Checkboxes & Radios */
.checkbox-group,
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.check-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    color: var(--text-primary);
}

input[type="checkbox"],
input[type="radio"] {
    accent-color: var(--accent-blue);
    width: 1.1rem;
    height: 1.1rem;
    cursor: pointer;
}

/* Tooltips */
.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #64748b;
    font-size: 10px;
    font-weight: 700;
    cursor: help;
    margin-left: 0.5rem;
    position: relative;
    border: 1px solid #cbd5e1;
}

.tooltip-icon:hover {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

.tooltip-icon::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 140%;
    left: 50%;
    transform: translateX(-50%);
    background: #1e293b;
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: pre-wrap;
    width: max-content;
    max-width: 250px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s;
    font-weight: 400;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    line-height: 1.4;
    text-align: center;
}

.tooltip-icon:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Buttons */
.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    box-shadow: 0 4px 6px -1px var(--input-focus-ring);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #fff;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
}

/* Output Area */
.code-wrapper {
    background: #0f172a;
    border-radius: 6px;
    padding: 1.5rem;
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
    color: #e2e8f0;
    overflow-x: auto;
    max-height: 500px;
}

/* Helper Text */
.helper-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Loader */
#loaderContainer {
    margin-top: 1.5rem;
    text-align: center;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e2e8f0;
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Utility */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal-card {
    background: #fff;
    width: 90%;
    max-width: 600px;
    border-radius: 8px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    padding: 2.5rem;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-close:hover {
    color: var(--text-primary);
}

footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4rem;
    margin-bottom: 2rem;
}