/* --- Değişkenler --- */
:root {
    --color-navy: #003366;      /* Finansal Lacivert */
    --color-navy-dark: #002244;
    --color-grey: #F0F2F5;      /* Açık Gri Zemin */
    --color-steel: #778899;     /* Çelik Grisi */
    --color-white: #FFFFFF;
    --color-text: #333333;
    --sidebar-width: 250px;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-grey);
    color: var(--color-text);
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; border-radius: 4px; }

/* --- Layout --- */
.app-container { display: flex; min-height: 100vh; }

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-navy);
    color: #cbd5e1;
    position: fixed;
    top: 0; left: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.logo-area {
    padding: 25px;
    background-color: var(--color-navy-dark);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 1px;
}

.blue-text { color: #4dabf7; }

.side-nav { flex: 1; padding: 20px 0; }
.side-nav ul { display: flex; flex-direction: column; gap: 5px; }
.side-nav a {
    display: block;
    padding: 12px 25px;
    font-size: 0.95rem;
    font-weight: 600;
    border-left: 4px solid transparent;
}
.side-nav a:hover, .side-nav a.active {
    background-color: rgba(255,255,255,0.1);
    color: var(--color-white);
    border-left-color: #4dabf7;
}

.sidebar-footer { padding: 25px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.85rem; }
.sidebar-footer a { color: #4dabf7; font-weight: bold; display: block; margin-top: 5px; }

/* --- Main Content --- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* --- Mobile Header --- */
.mobile-header {
    display: none;
    background-color: var(--color-navy);
    padding: 15px 20px;
    justify-content: space-between;
    align-items: center;
    color: var(--color-white);
}
.mobile-logo { font-family: var(--font-heading); font-size: 1.2rem; font-weight: 700; color: var(--color-white); }
.menu-toggle { background: none; border: none; color: var(--color-white); cursor: pointer; }

/* --- Mobile Menu Overlay --- */
.mobile-menu {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--color-navy);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transform: translateX(-100%);
    transition: 0.3s;
}
.mobile-menu.active { transform: translateX(0); }
.mobile-menu a { font-family: var(--font-heading); font-size: 1.5rem; color: var(--color-white); font-weight: 600; }
.close-menu { position: absolute; top: 20px; right: 20px; background: none; border: none; font-size: 2rem; color: var(--color-white); cursor: pointer; }

/* --- Content Padding --- */
.content-padding { padding: 40px; max-width: 1200px; margin: 0 auto; width: 100%; }

/* --- Hero Banner --- */
.hero-banner {
    background-color: var(--color-white);
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 30px;
}

.hero-text { max-width: 600px; }
.badge { background-color: #e7f5ff; color: var(--color-navy); padding: 5px 12px; border-radius: 4px; font-weight: bold; font-size: 0.8rem; letter-spacing: 1px; }
.hero-text h1 { font-family: var(--font-heading); font-size: 2.5rem; color: var(--color-navy); margin: 15px 0; line-height: 1.2; }
.hero-text p { color: #555; margin-bottom: 25px; font-size: 1.1rem; }
.btn { display: inline-block; padding: 12px 30px; font-weight: 600; border-radius: 4px; transition: 0.3s; border: none; cursor: pointer; text-align: center; }
.btn-blue { background-color: var(--color-navy); color: var(--color-white); }
.btn-blue:hover { background-color: var(--color-navy-dark); }
.full-width { width: 100%; }

.hero-chart { width: 300px; height: 150px; }
.chart-svg { width: 100%; height: 100%; overflow: visible; }

/* --- Grid Section --- */
.grid-header { display: flex; align-items: center; gap: 20px; margin-bottom: 30px; }
.grid-header h2 { font-family: var(--font-heading); color: var(--color-navy); font-size: 1.8rem; white-space: nowrap; }
.line { width: 100%; height: 2px; background-color: #e0e0e0; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.invest-card { background-color: var(--color-white); padding: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); border: 1px solid #e0e0e0; transition: 0.3s; }
.invest-card:hover { transform: translateY(-5px); border-color: var(--color-navy); }
.icon-box { color: var(--color-navy); margin-bottom: 20px; }
.invest-card h3 { font-family: var(--font-heading); font-size: 1.3rem; margin-bottom: 10px; color: var(--color-text); }
.invest-card p { font-size: 0.95rem; color: #666; margin-bottom: 20px; }
.link-text { color: var(--color-navy); font-weight: bold; font-size: 0.9rem; text-transform: uppercase; }

/* --- About Split --- */
.page-header { margin-bottom: 40px; }
.page-header h1 { font-family: var(--font-heading); font-size: 2.2rem; color: var(--color-navy); }
.split-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.text-block h2 { font-family: var(--font-heading); font-size: 1.8rem; margin-bottom: 20px; color: var(--color-navy); }
.stats-row { display: flex; gap: 40px; margin-top: 30px; border-top: 1px solid #ddd; padding-top: 20px; }
.stat strong { display: block; font-size: 2rem; color: var(--color-navy); font-family: var(--font-heading); }
.stat span { font-size: 0.9rem; color: #666; }

/* --- Testimonials --- */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.testimonial-card { background-color: var(--color-white); padding: 30px; border-radius: 8px; border-left: 4px solid var(--color-navy); box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
.quote-icon { font-size: 2rem; color: #ddd; margin-bottom: 10px; font-family: serif; }
.testimonial-card p { font-style: italic; color: #555; margin-bottom: 20px; }
.client-info strong { display: block; color: var(--color-navy); }
.client-info span { font-size: 0.85rem; color: #888; }

/* --- Contact & Legal --- */
.contact-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 50px; }
.contact-info h2 { font-family: var(--font-heading); color: var(--color-navy); margin-bottom: 20px; }
.info-item { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; }
.info-item svg { color: var(--color-navy); }

.corp-form { background-color: var(--color-white); padding: 40px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.corp-form h3 { font-family: var(--font-heading); color: var(--color-navy); margin-bottom: 25px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: #444; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px; font-family: inherit; }
.form-group input:focus { border-color: var(--color-navy); outline: none; }

.legal-doc { background-color: var(--color-white); padding: 50px; border-radius: 8px; max-width: 900px; }
.legal-doc h1 { font-family: var(--font-heading); color: var(--color-navy); }
.blue-line { border: 0; height: 3px; background-color: var(--color-navy); margin: 20px 0; }
.legal-doc h3 { color: var(--color-navy); margin-top: 30px; margin-bottom: 10px; font-family: var(--font-heading); }

/* --- Footer --- */
.content-footer { text-align: center; margin-top: 60px; padding: 20px 0; color: #888; border-top: 1px solid #ddd; font-size: 0.9rem; }

/* --- Responsive --- */
@media (max-width: 992px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .mobile-header { display: flex; }
    .split-content, .contact-grid { grid-template-columns: 1fr; }
    .content-padding { padding: 20px; }
    .hero-banner { flex-direction: column; text-align: center; }
    .hero-chart { display: none; }
}