:root {
    --primary: #2563eb;          /* Ana mavi */
    --primary-light: #3b82f6;    /* Açık mavi */
    --secondary: #fbbf24;        /* Sarı butonlar, vurgu */
    --bg-light: #f7f8fa;         /* Site ana arka planı */
    --text: #222;                /* Temel yazı */
    --dark: #1e293b;             /* Lacivert, footer */
    --white: #fff;               /* Beyaz */
    --navbar-shadow: 0 2px 14px rgba(44,55,130,0.04);
    --border-light: #e5e7eb;
}

body {
    font-family: 'Inter', Arial, Helvetica, sans-serif !important;
    font-size: 1.06rem;
    background-color: var(--bg-light);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', Arial, Helvetica, sans-serif !important;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.navbar {
    background: var(--white) !important;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--navbar-shadow);
}

.navbar-brand {
    font-family: 'Inter', Arial, Helvetica, sans-serif !important;
    font-weight: 900;
    font-size: 1.45rem;
    letter-spacing: 0.02em;
    color: var(--primary) !important;
}

.nav-link {
    color: var(--text) !important;
    transition: color 0.18s;
}

.nav-link.active,
.nav-link:focus,
.nav-link:hover {
    color: var(--primary) !important;
    font-weight: bold;
}

.btn-primary {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-light) !important;
    border-color: var(--primary-light) !important;
}

.btn-warning, .badge.bg-warning {
    background-color: var(--secondary) !important;
    color: #222 !important;
}

.section-title {
    color: var(--primary);
}

.card-title {
    color: var(--dark);
}

.card {
    border-radius: 14px;
    box-shadow: 0 2px 14px rgba(44,55,130,0.07);
}

.img-fluid.rounded, .card-img-top {
    border-radius: 12px;
}

.ratio {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 14px rgba(44,55,130,0.10);
}

.footer {
    background: var(--dark);
    color: #fff;
    padding: 40px 0 20px 0;
    margin-top: 48px;
}

.footer a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.footer .social a {
    font-size: 1.5rem;
    margin-right: 12px;
    color: var(--secondary);
}

.footer .social a:hover {
    color: var(--primary-light);
}

::-webkit-scrollbar {
    width: 9px;
    background: #e5e7eb;
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 6px;
}

@media (max-width: 600px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    .footer {
        padding: 24px 0 10px 0;
    }
    .card-title {
        font-size: 1.15rem;
    }
}

.whatsapp-float {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 3px 12px rgba(0,0,0,0.12);
    font-size: 2rem;
    z-index: 9999;
    transition: box-shadow 0.2s, transform 0.2s;
}
.whatsapp-float:hover {
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
    transform: scale(1.08);
    color: #fff;
    text-decoration: none;
}