/* ==========================================================================
   FLEXMETRIC PREMIUM MASTER STYLESHEET - NUMERIC METRIC EDITION
   ========================================================================== */

/* 1. Reset & Global Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root {
    --primary-blue: #3b82f6;        /* The absolute core brand blue */
    --primary-blue-hover: #1d4ed8;  /* Strict darker blue fallback only for active interactive states */
    --dark-navy: #0f172a;           /* Premium dark black-navy for headers and text */
    --secondary-slate: #475569;     /* Soft slate grey ONLY for body paragraphs/subtitles */
    --light-bg: #f8fafc;
    --white: #ffffff;
    --border-color: #c9d1db;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08);
    --radius: 12px;
}

body {
    background-color: var(--white);
    color: var(--dark-navy);
    line-height: 1.5;
}

/* 2. Header / Navigation Bar */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark-navy);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary-blue);
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-item {
    text-decoration: none;
    color: var(--secondary-slate);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.nav-item:hover, .nav-item.active {
    color: var(--primary-blue);
}

/* 3. Hero Section */
.hero-section {
    padding: 80px 0;
    background: radial-gradient(100% 100% at 50% 0%, rgba(59, 130, 246, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-headline {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--dark-navy);
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.hero-subheadline {
    font-size: 1.15rem;
    color: var(--secondary-slate);
    line-height: 1.6;
    margin-bottom: 32px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    font-weight: 600;
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

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

/* Hero Right Preview Card - Professional Numeric Edition */
.preview-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.preview-header {
    background-color: var(--light-bg);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 6px;
}

.preview-dot {
    width: 10px;
    height: 10px;
    background-color: #cbd5e1;
    border-radius: 50%;
}

.preview-body {
    padding: 24px;
}

.widget-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.widget-label {
    font-weight: 600;
    color: var(--dark-navy);
}

.widget-badge {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-blue);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Professional Data Metrics Panel (Replaced visual line tracking with clear numeric metrics) */
.widget-numeric-box {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 16px;
}

.widget-numeric-score {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary-blue);
    line-height: 1;
    margin-bottom: 4px;
}

.widget-numeric-label {
    font-size: 0.8rem;
    color: var(--secondary-slate);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.widget-text {
    font-size: 0.9rem;
    color: var(--secondary-slate);
    line-height: 1.5;
}

/* 4. Why FlexMetric / Features Grid */
.features-section {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Base feature card layout with a clean invisible/neutral starting border */
.feature-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: var(--radius);
    border: 2px solid var(--border-color); /* Grounding baseline border */
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Responsive state: The moment the user hovers, it highlights with a crisp blue line */
.feature-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-blue); /* This instantly brings out the sharp blue line */
    box-shadow: var(--shadow-md);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 12px;
}

.feature-description {
    color: var(--secondary-slate);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 5. Tool Layouts (Assessment & Calculators Page Structure) */
.assessment-section {
    padding: 60px 0;
    background-color: var(--light-bg);
}

.assessment-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
}

.input-card, .results-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}

.page-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-navy);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.page-subtitle, .pullup-placeholder, .results-placeholder {
    color: var(--secondary-slate);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 30px;
}

/* Form Styling with Professional Outlines */
.form-group {
    margin-bottom: 24px;
}

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

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--dark-navy);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

/* Brought back the sharp, prominent Primary Blue Form Outline */
.form-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
    outline: 2px solid var(--primary-blue);
}

/* Updated to strict brand blue with a darker crisp hover state */
.calc-submit-btn {
    width: 100%;
    background-color: var(--primary-blue); /* Changes the button to #3b82f6 */
    color: var(--white);
    padding: 14px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.calc-submit-btn:hover {
    background-color: var(--primary-blue-hover); /* Deepens slightly on hover for premium feedback */
    transform: translateY(-1px);
}


/* Results Panel Details */
.results-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 16px;
}

.report-metric {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.report-metric:last-child {
    border-bottom: none;
}

.report-label {
    color: var(--secondary-slate);
    font-weight: 500;
}

.report-value {
    font-weight: 700;
    color: var(--dark-navy);
}

.score-text {
    color: var(--primary-blue);
}

/* 6. Standards Data Table */
.standards-section {
    padding: 60px 0;
    background-color: var(--white);
}

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

.table-section-title {
    font-size: 1.75rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 8px;
}

.table-section-subtitle {
    text-align: center;
    color: var(--secondary-slate);
    max-width: 700px;
    margin: 0 auto 40px auto;
    font-size: 1rem;
    line-height: 1.6;
}

.standards-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 60px;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.standards-table th {
    background-color: var(--light-bg);
    color: var(--dark-navy);
    text-align: left;
    padding: 16px 20px;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.standards-table td {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--secondary-slate);
    font-size: 0.95rem;
}

.standards-table tr:last-child td {
    border-bottom: none;
}

/* Performance Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.tier-beginner { background-color: #f1f5f9; color: #64748b; }
.tier-novice { background-color: #fef3c7; color: #d97706; }
.tier-intermediate { background-color: #dbeafe; color: #2563eb; }
.tier-advanced { background-color: #e0f2fe; color: #0369a1; }
.tier-elite { background-color: #dcfce7; color: #15803d; }

/* 7. FAQ Block Styling */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark-navy);
    margin-bottom: 30px;
    text-align: center;
}

.faq-item {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-navy);
    margin-bottom: 8px;
}

.faq-answer {
    color: var(--secondary-slate);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 8. Editorial Content & Resources Layout Grid */
.article-section {
    padding: 60px 0;
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
}

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

.article-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.article-content {
    padding: 40px;
}

.article-tag {
    color: var(--primary-blue);
    font-size: 0.85rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 12px;
}

.article-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--dark-navy);
    margin-bottom: 12px;
    line-height: 1.25;
}

.article-excerpt {
    color: var(--secondary-slate);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.article-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.article-link:hover {
    color: var(--primary-blue-hover);
}

/* 9. Premium Dark Navy Footer */
.footer {
    background-color: var(--dark-navy);
    color: #94a3b8;
    padding: 40px 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-item {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-item:hover {
    color: var(--white);
}

/* 10. Responsive Design Media Queries */
@media (max-width: 968px) {
    .hero-container, .assessment-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-headline {
        font-size: 2.25rem;
    }
    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* ==========================================================================
   FLEXMETRIC MOBILE RESPONSIVE ENGINE & TRANSITION ARCHITECTURE
   ========================================================================== */

@media (max-width: 768px) {
    /* 1. NAVBAR HAMBURGER LAYOUT TRANSFORMATIONS */
    .navbar-container {
        position: relative;
        padding: 15px 20px;
    }

    /* Hide standard text links from default horizontal view line */
    .nav-links {
        display: none; 
        flex-direction: column;
        width: 100%;
        background-color: #ffffff;
        position: absolute;
        top: 100%;
        left: 0;
        padding: 20px;
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
        border-top: 1px solid #e2e8f0;
        gap: 16px;
        z-index: 9999;
    }

    /* JavaScript Toggle State Trigger Class */
    .nav-links.active {
        display: flex;
    }

    .nav-item {
        width: 100%;
        padding: 8px 0;
        font-size: 1.05rem;
    }

    /* Interactive Hamburger Visual Build */
    .hamburger-btn {
        display: flex !important;
        flex-direction: column;
        justify-content: space-between;
        width: 24px;
        height: 18px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 10000;
    }

    .hamburger-btn span {
        display: block;
        width: 100%;
        height: 2px;
        background-color: #0f172a;
        border-radius: 2px;
        transition: all 0.25s ease-in-out;
    }

    /* 2. TABLE ISOLATION LAYOUT WRAPPER */
    .table-responsive {
        width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 20px;
        border: 1px solid #e2e8f0;
        border-radius: 8px;
    }

    .standards-table {
        min-width: 600px; /* Forces stable column spacing internally inside box */
        margin-bottom: 0 !important;
    }

    /* 3. CALCULATOR GRID AND PANEL OVERRIDES */
    .assessment-container {
        flex-direction: column !important;
        gap: 30px !important;
    }

    .input-card, .results-card {
        width: 100% !important;
        max-width: 100% !important;
    }

    /* Normalize home page hero columns */
    .hero-container {
        flex-direction: column !important;
        text-align: center;
        padding: 40px 20px !important;
    }

    .hero-left, .hero-right {
        width: 100% !important;
        max-width: 100% !important;
    }

    .hero-cta-group {
        justify-content: center;
    }
}

/* Ensure the button hides natively on desktop viewports */
.hamburger-btn {
    display: none;
}