/* =================================================================
   Psychrometric Engineering Platform - Master Stylesheet
   ================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --border-color: #e2e8f0;
    --header-bg: #ffffff;
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
}

/* Evrensel sıfırlama (Linter uyarılarını önlemek için optimize edildi) */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
    background-color: #f8fafc;
    background-color: var(--bg-main);
    color: #1e293b;
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    color: #1e293b;
    color: var(--text-primary);
    font-weight: 600;
}

.engineer-card {
    background-color: #ffffff;
    background-color: var(--bg-card);
    border: 1px solid #e2e8f0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

.btn-primary {
    background-color: #2563eb;
    background-color: var(--accent-color);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #1d4ed8;
    background-color: var(--accent-hover);
}

.btn-outline {
    background-color: transparent;
    color: #2563eb;
    color: var(--accent-color);
    border: 1px solid #2563eb;
    border: 1px solid var(--accent-color);
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-block;
}

.btn-outline:hover {
    background-color: #2563eb;
    background-color: var(--accent-color);
    color: #ffffff;
}