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

:root {
    --primary-color: #0B1F33;
    --primary-dark: #0A2540;
    --secondary-color: #0F172A;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.25rem;
    opacity: 0.95;
    font-weight: 300;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
    background-color: var(--bg-white);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Tabs Section */
.tabs-section {
    padding: 80px 0;
    background-color: var(--bg-white);
}

/* Tab Navigation */
.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
    background-color: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.tab-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: rgba(11, 31, 51, 0.05);
}

.tab-btn.active {
    color: white;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(11, 31, 51, 0.3);
}

/* Tab Content */
.tabs-content {
    max-width: 900px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-panel.active {
    display: block;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tab Placeholder Content */
.tab-placeholder {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-light);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
}

.tab-placeholder h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.tab-placeholder p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Executive Summary Styles */
.executive-summary-container {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 100%);
    border-radius: 16px;
    padding: 50px 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

.summary-content {
    max-width: 800px;
    margin: 0 auto;
}

.lead-paragraph {
    font-size: 1.35rem;
    line-height: 1.8;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.lead-paragraph strong {
    color: var(--primary-color);
}

.lead-paragraph em {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-style: normal;
    font-weight: 600;
}

.value-propositions {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-white);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.value-item:hover {
    border-color: var(--primary-color);
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(11, 31, 51, 0.15);
}

.value-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.value-item span:last-child {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.value-item strong {
    color: var(--primary-color);
}

.body-text {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 30px;
}

.body-text strong {
    color: var(--primary-color);
}

.highlight-quote {
    background: linear-gradient(135deg, rgba(11, 31, 51, 0.08) 0%, rgba(15, 23, 42, 0.08) 100%);
    border-left: 4px solid var(--primary-color);
    padding: 25px 30px;
    border-radius: 0 12px 12px 0;
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin: 0;
    font-style: normal;
}

.highlight-quote em {
    color: var(--primary-color);
    font-style: normal;
    font-weight: 600;
}

.highlight-quote strong {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive for Executive Summary */
@media (max-width: 768px) {
    .executive-summary-container {
        padding: 30px 20px;
    }

    .lead-paragraph {
        font-size: 1.15rem;
    }

    .value-item {
        padding: 16px 18px;
    }

    .value-item span:last-child {
        font-size: 1rem;
    }

    .highlight-quote {
        padding: 20px;
        font-size: 1rem;
    }
}

/* Contact Tab Container */
.contact-tab-container {
    text-align: center;
    padding: 20px 0;
}

.contact-tab-container h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.contact-tab-container .contact-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-tab-container .contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-light);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    text-align: left;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.detail-item {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 2px solid var(--border-color);
}

.detail-label {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 1.25rem;
    color: var(--text-dark);
    font-weight: 600;
}

.detail-value.available {
    color: var(--success-color);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.contact-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background-color: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(11, 31, 51, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 2px solid var(--success-color);
    display: block;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 2px solid var(--error-color);
    display: block;
}

/* Footer */
footer {
    background-color: var(--text-dark);
    color: white;
    text-align: center;
    padding: 30px 0;
}

footer p {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .hero h2,
    .features h2,
    .domain-details h2,
    .contact h2 {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1.1rem;
    }

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

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

    .contact-form {
        padding: 30px 20px;
    }
}