/* EVS Unified Site — Landing Page Styles
   Color scheme, typography, and layout patterns match
   evs-calculator/styles/main.css and evs-sizer/styles/main.css */

:root {
    --aws-dark-blue: #232f3e;
    --aws-blue: #0073bb;
    --aws-blue-hover: #005d99;
    --aws-blue-light: rgba(0, 115, 187, 0.1);
    --aws-orange: #ff9900;
    --aws-gray-50: #fafafa;
    --aws-gray-100: #f2f3f3;
    --aws-gray-200: #d5dbdb;
    --aws-gray-500: #687078;
    --aws-gray-700: #232f3e;
    --aws-text: #232f3e;
    --aws-text-light: #687078;
    --aws-white: #ffffff;
    --border-radius: 4px;
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-lg: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --font-family: 'Amazon Ember', 'Helvetica Neue', Roboto, Arial, sans-serif;
}

/* Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--aws-text);
    background-color: var(--aws-gray-50);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
.aws-header {
    background-color: var(--aws-dark-blue);
    color: var(--aws-white);
    padding: 12px 0;
    border-bottom: 1px solid #3c4043;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius);
}

.aws-header h1 {
    font-size: 18px;
    font-weight: 400;
    color: var(--aws-white);
}

/* ── Main content ── */
.main-content {
    min-height: calc(100vh - 57px);
    display: flex;
    align-items: flex-start;
    padding: 48px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* ── Page intro ── */
.page-intro {
    text-align: center;
    margin-bottom: 48px;
}

.page-intro h2 {
    font-size: 28px;
    font-weight: 400;
    color: var(--aws-text);
    margin-bottom: 8px;
}

.page-intro p {
    font-size: 16px;
    color: var(--aws-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ── Tool cards ── */
.tool-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.tool-card {
    background: var(--aws-white);
    border: 1px solid var(--aws-gray-200);
    border-radius: var(--border-radius);
    padding: 32px;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--aws-text);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.tool-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--aws-blue);
}

.tool-card:focus {
    outline: 2px solid var(--aws-blue);
    outline-offset: 2px;
}

/* ── Card icon ── */
.tool-card-icon {
    color: var(--aws-blue);
    margin-bottom: 20px;
}

/* ── Card content ── */
.tool-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--aws-text);
    margin-bottom: 12px;
}

.tool-card p {
    font-size: 14px;
    color: var(--aws-text-light);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 20px;
}

.tool-card-cta {
    font-size: 14px;
    font-weight: 600;
    color: var(--aws-blue);
    transition: color 0.2s ease;
}

.tool-card:hover .tool-card-cta {
    color: var(--aws-blue-hover);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .tool-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .main-content {
        padding: 24px 0;
    }

    .page-intro {
        margin-bottom: 32px;
    }

    .page-intro h2 {
        font-size: 22px;
    }

    .page-intro p {
        font-size: 14px;
    }

    .tool-card {
        padding: 24px;
    }

    .aws-header h1 {
        font-size: 16px;
    }

    .header-container {
        padding: 0 16px;
    }

    .container {
        padding: 0 16px;
    }
}

@media (max-width: 480px) {
    .page-intro h2 {
        font-size: 20px;
    }

    .tool-card {
        padding: 20px;
    }

    .tool-card h3 {
        font-size: 16px;
    }
}

/* ── Accessibility ── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --aws-gray-200: #000;
        --aws-text: #000;
        --aws-text-light: #333;
    }
}