/* ===================================
   MilkGoo Landing Page Styles - v2.0 (Geliştirilmiş Tasarım)
   =================================== */

:root {
    /* Renk Paleti - Biraz daha rafine edildi */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --secondary: #0ea5e9;
    --accent-cream: #f8fafc; /* Süt/Krem tonu arka planlar için */
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-tertiary: #64748b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f0f7ff; /* Çok hafif mavimsi beyaz */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --glass-bg: rgba(255, 255, 255, 0.85); /* Buzlu cam efekti için */
    
    /* Tipografi */
    --font-primary: 'Archivo', sans-serif;
    --font-secondary: 'DM Sans', sans-serif;
    
    /* Boşluklar */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Kenar Yuvarlaklıkları */
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    
    /* Gölgeler - Renkli ve modern gölgeler kullanıldı */
    --shadow-sm: 0 1px 2px 0 rgba(37, 99, 235, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(37, 99, 235, 0.1), 0 2px 4px -1px rgba(37, 99, 235, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(37, 99, 235, 0.1), 0 4px 6px -2px rgba(37, 99, 235, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(37, 99, 235, 0.1), 0 10px 10px -5px rgba(37, 99, 235, 0.04);
    
    --transition-base: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Temel Ayarlar */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-secondary); color: var(--text-secondary); line-height: 1.7; overflow-x: hidden; background-color: var(--bg-primary); }
h1, h2, h3, h4 { font-family: var(--font-primary); font-weight: 800; line-height: 1.2; color: var(--text-primary); letter-spacing: -0.02em; }
a { text-decoration: none; color: inherit; transition: var(--transition-base); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
p { margin-bottom: 1rem; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 var(--spacing-lg); }
section { padding: var(--spacing-3xl) 0; position: relative; overflow: hidden; }

/* Buttons - İyileştirilmiş */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.875rem 1.75rem; font-weight: 600; border-radius: var(--radius-lg); transition: var(--transition-base); white-space: nowrap; font-size: 1rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.125rem; }
.btn-primary { 
    background: linear-gradient(135deg, var(--primary), var(--secondary)); 
    color: white; 
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
    border: 2px solid transparent;
}
.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
    transform: translateY(-2px);
}
.btn-outline { 
    border: 2px solid var(--border-color); 
    color: var(--text-primary);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--bg-secondary);
}
.btn-block { width: 100%; }

/* Navbar - Glassmorphism Efekti Güçlendirildi */
.navbar { 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    background: var(--glass-bg);
    backdrop-filter: blur(16px); 
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition-base);
}
.nav-content { display: flex; align-items: center; justify-content: space-between; height: 90px; }
.nav-logo { display: flex; align-items: center; gap: 1rem; }

/* LOGO BOYUTU BÜYÜTÜLDÜ */
.logo-icon { 
    width: 56px; /* 40px'ten 56px'e çıkarıldı */
    height: 56px; 
    object-fit: contain; 
    flex-shrink: 0; 
    filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.2)); /* Logoya hafif gölge */
}

.logo-title { font-size: 1.75rem; font-weight: 900; color: var(--primary-dark); line-height: 1; }
.logo-subtitle { font-size: 0.85rem; color: var(--text-tertiary); display: block; font-weight: 500; }
.nav-menu { display: flex; gap: var(--spacing-lg); align-items: center; }
.nav-link { font-weight: 500; font-size: 1rem; color: var(--text-secondary); position: relative; }
.nav-link:hover { color: var(--primary); }
/* Link altı çizgisi animasyonu */
.nav-link::after {
    content: ''; position: absolute; width: 0; height: 2px; bottom: -4px; left: 0;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: var(--transition-base);
}
.nav-link:hover::after { width: 100%; }
.nav-actions { display: flex; gap: var(--spacing-sm); }

/* Mobile Menu Toggle */
.mobile-menu-toggle { display: none; flex-direction: column; gap: 6px; width: 40px; height: 40px; justify-content: center; align-items: center; z-index: 1002; background: var(--bg-secondary); border-radius: var(--radius-md); }
.mobile-menu-toggle span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s ease; }

/* Hero Section - Tasarım İyileştirmesi */
.hero { 
    min-height: 95vh; 
    display: flex; 
    align-items: center; 
    padding-top: 120px; 
    /* Alt kısma organik bir kavis ekleyelim */
    padding-bottom: var(--spacing-3xl);
}
/* Organik Kavis (Süt/Dalga efekti) */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: var(--bg-secondary);
    clip-path: ellipse(70% 100% at 50% 100%);
    z-index: -1;
}

.hero-content { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--spacing-2xl); align-items: center; }
.hero-text { padding-right: var(--spacing-lg); }
.hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(37, 99, 235, 0.1); color: var(--primary);
    padding: 0.5rem 1rem; border-radius: 2rem; font-size: 0.875rem; font-weight: 600;
    margin-bottom: var(--spacing-md); border: 1px solid rgba(37, 99, 235, 0.2);
}
.hero-title { font-size: 3.75rem; margin-bottom: var(--spacing-md); letter-spacing: -0.03em; }
.gradient-text { 
    background: linear-gradient(120deg, var(--primary-dark), var(--primary), var(--secondary)); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    display: inline-block;
}
.hero-subtitle { font-size: 1.35rem; color: var(--text-secondary); margin-bottom: var(--spacing-md); font-weight: 500; }
.hero-description { margin-bottom: var(--spacing-xl); color: var(--text-tertiary); font-size: 1.1rem; max-width: 600px; }
.hero-actions { display: flex; gap: var(--spacing-md); }
.hero-stats { display: flex; flex-direction: column; gap: var(--spacing-lg); margin-top: var(--spacing-2xl); border-top: 1px solid var(--border-light); padding-top: var(--spacing-lg); }
.stat-item { display: flex; gap: var(--spacing-md); align-items: flex-start; }
.stat-icon { 
    width: 56px; height: 56px; 
    background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(14,165,233,0.15));
    border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; 
    box-shadow: var(--shadow-sm);
}
.stat-content h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.stat-content p { font-size: 0.95rem; margin-bottom: 0; }

/* Hero Visual & Mockup - İyileştirilmiş */
.hero-visual { position: relative; perspective: 1500px; }
.dashboard-mockup { 
    background: white; 
    border-radius: var(--radius-2xl); 
    box-shadow: var(--shadow-xl); 
    overflow: hidden; 
    transform: rotateY(-10deg) rotateX(5deg); 
    transition: var(--transition-smooth);
    border: 4px solid white;
}
.dashboard-mockup:hover { transform: rotateY(0) rotateX(0) scale(1.02); box-shadow: 0 30px 60px -10px rgba(37, 99, 235, 0.25); }
.mockup-header { background: var(--bg-secondary); padding: 1.25rem; display: flex; align-items: center; gap: 1rem; border-bottom: 1px solid var(--border-light); }
.mockup-dots span { width: 12px; height: 12px; border-radius: 50%; display: inline-block; background: #cbd5e1; margin-right: 6px; }
.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #22c55e; }
.mockup-title { font-weight: 600; font-size: 0.9rem; color: var(--text-tertiary); }
.mockup-content { padding: var(--spacing-lg); background: #fafcff; }
.mockup-stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2rem; }
.mockup-card { background: white; padding: 1.25rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
.mockup-card-label { font-size: 0.85rem; color: var(--text-tertiary); margin-bottom: 0.5rem; }
.mockup-card-value { font-weight: 800; font-size: 1.5rem; color: var(--text-primary); }
.mockup-card-trend { display: inline-block; margin-top: 0.5rem; font-size: 0.85rem; font-weight: 600; }
.mockup-card-trend.positive { color: #22c55e; background: rgba(34, 197, 94, 0.1); padding: 2px 8px; border-radius: 1rem; }
.mockup-chart { display: flex; align-items: flex-end; justify-content: space-between; height: 120px; padding-top: 1rem; border-top: 1px solid var(--border-light); }
.chart-bar { 
    background: linear-gradient(to top, var(--primary), var(--secondary)); 
    border-radius: 4px 4px 0 0; 
    opacity: 0.9; 
    transition: height 1s ease-in-out;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}

/* Floating Cards - Animasyonlu */
.floating-card { 
    position: absolute; background: white; padding: 1rem 1.25rem; border-radius: var(--radius-xl); 
    box-shadow: var(--shadow-lg); display: flex; gap: 1rem; align-items: center; 
    animation: float 4s ease-in-out infinite; z-index: 10; border: 1px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(4px);
}
.card-1 { top: 15%; right: -8%; animation-delay: 0s; }
.card-2 { bottom: 15%; left: -8%; animation-delay: 2s; }
.floating-icon { width: 40px; height: 40px; background: var(--bg-secondary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; }
.floating-title { font-weight: 700; font-size: 0.95rem; }
.floating-subtitle { font-size: 0.8rem; color: var(--text-tertiary); }

@keyframes float { 0%, 100% { transform: translateY(0px); } 50% { transform: translateY(-15px); } }

/* General Sections & Headers */
.who-section, .modules-section, .testimonials-section, .faq-section, .contact-section { 
    background: var(--bg-secondary); 
    /* Bölümler arasına hafif dalgalı geçişler eklenebilir, şimdilik düz */
}
/* Bölüm başlıklarını daha belirgin yapalım */
.section-header { text-align: center; max-width: 700px; margin: 0 auto var(--spacing-3xl); }
.section-title { font-size: 2.75rem; margin-bottom: 1.25rem; letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.2rem; color: var(--text-tertiary); }

/* Grids - Düzenleme */
.who-grid, .testimonials-grid, .modules-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); }

/* Cards (Genel Kart Tasarımı) - İyileştirilmiş */
.who-card, .feature-card, .module-card, .testimonial-card { 
    background: white; padding: var(--spacing-xl); border-radius: var(--radius-xl); 
    transition: var(--transition-smooth); border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    position: relative; overflow: hidden;
}
.who-card:hover, .feature-card:hover, .module-card:hover { 
    transform: translateY(-10px); 
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}
/* İkonların arka planına hafif renk */
.who-icon, .feature-icon, .module-icon { 
    font-size: 2.5rem; margin-bottom: 1.5rem; display: inline-block; 
    padding: 1rem;
    background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(14,165,233,0.12));
    border-radius: var(--radius-lg);
}

/* Featured Card (Öne Çıkan) */
.who-card.featured { 
    background: linear-gradient(135deg, var(--primary), var(--secondary)); 
    color: white; border: none; 
    box-shadow: var(--shadow-lg);
}
.who-card.featured .who-description, .who-card.featured .who-features li, .who-card.featured .who-title { color: white; }
.who-card.featured .who-icon { background: rgba(255,255,255,0.15); color: white; backdrop-filter: blur(5px); }
.who-badge { position: absolute; top: 1.25rem; right: 1.25rem; background: rgba(255,255,255,0.25); padding: 6px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; backdrop-filter: blur(5px); }

.who-title, .feature-title, .module-title { font-size: 1.35rem; margin-bottom: 1rem; }
.who-description, .feature-description, .module-description { color: var(--text-tertiary); font-size: 1rem; }
.who-features, .footer-links { list-style: none; margin-top: 1.5rem; font-size: 0.95rem; }
.who-features li { margin-bottom: 0.75rem; display: flex; align-items: center; }
.who-features li::before { content: '✓'; color: var(--primary); margin-right: 0.75rem; font-weight: bold; }
.who-card.featured .who-features li::before { color: white; }

/* Feature Card Specifics */
.feature-card { padding: var(--spacing-lg); }
.feature-number { font-size: 3rem; font-weight: 900; color: var(--border-light); position: absolute; top: 1rem; right: 1.5rem; opacity: 0.5; z-index: 0; }
.feature-card > * { position: relative; z-index: 1; }

/* Module Card Specifics */
.module-tags { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag { background: var(--bg-secondary); color: var(--text-secondary); padding: 0.4rem 0.8rem; border-radius: 2rem; font-size: 0.8rem; font-weight: 600; border: 1px solid var(--border-color); }

/* Timeline - İyileştirilmiş */
.how-timeline { max-width: 800px; margin: 0 auto; position: relative; border-left: 3px solid var(--border-light); padding-left: 2.5rem; }
.timeline-item { position: relative; margin-bottom: 4rem; }
.timeline-number { 
    position: absolute; left: -3.9rem; top: 0; width: 3rem; height: 3rem; 
    background: linear-gradient(135deg, var(--primary), var(--secondary)); 
    color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; 
    font-weight: 800; font-size: 1.2rem; box-shadow: var(--shadow-md);
    border: 4px solid white;
}
.timeline-content { background: white; padding: 1.5rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
.timeline-title { font-size: 1.25rem; margin-bottom: 0.75rem; }

/* Testimonials */
.testimonial-card { padding: 2rem; display: flex; flex-direction: column; }
.testimonial-quote { font-size: 4rem; color: var(--primary-light); opacity: 0.3; line-height: 0.5; margin-bottom: 1.5rem; font-family: serif; }
.testimonial-text { font-size: 1.1rem; font-style: italic; color: var(--text-secondary); flex-grow: 1; }
.testimonial-author { margin-top: 1.5rem; display: flex; align-items: center; }
.author-info { border-left: 3px solid var(--primary); padding-left: 1rem; }
.author-name { font-weight: 700; color: var(--text-primary); }
.author-role { font-size: 0.9rem; color: var(--text-tertiary); }
.testimonial-card.featured { background: white; border: 2px solid var(--primary); box-shadow: var(--shadow-md); }
.testimonial-badge { background: var(--primary); color: white; display: inline-block; padding: 4px 12px; border-radius: 1rem; font-size: 0.8rem; font-weight: 700; margin-bottom: 1rem; }

/* FAQ (Accordion) - İyileştirilmiş */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
.faq-item { background: white; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); }
.faq-question { 
    width: 100%; text-align: left; padding: 1.5rem; display: flex; justify-content: space-between; align-items: center; 
    font-weight: 700; font-size: 1.1rem; color: var(--text-primary); transition: var(--transition-base);
}
.faq-question:hover { background: var(--bg-secondary); color: var(--primary); }
.faq-icon { transition: transform 0.3s ease; color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; }
.faq-answer p { padding: 0 1.5rem 1.5rem; color: var(--text-secondary); }

/* Contact Section & Form */
.contact-content { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--spacing-2xl); align-items: center; }
.contact-info .section-title { text-align: left; margin-bottom: 1rem; }
.contact-description { font-size: 1.1rem; margin-bottom: 2rem; color: var(--text-secondary); }
.contact-details { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-detail { display: flex; align-items: center; gap: 1rem; background: white; padding: 1rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.contact-icon { width: 48px; height: 48px; background: var(--bg-secondary); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.contact-label { font-size: 0.85rem; color: var(--text-tertiary); font-weight: 600; }
.contact-value { font-weight: 700; font-size: 1.1rem; color: var(--text-primary); }

.contact-form-wrapper { 
    background: white; padding: 2.5rem; border-radius: var(--radius-2xl); 
    box-shadow: var(--shadow-xl); border: 1px solid var(--border-light);
}
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--text-primary); font-size: 0.95rem; }
.form-group input, .form-group textarea { 
    width: 100%; padding: 1rem; border: 2px solid var(--border-color); border-radius: var(--radius-lg); 
    font-family: inherit; font-size: 1rem; transition: var(--transition-base); background: var(--bg-secondary);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); background: white; box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1); }
.contact-form .btn { font-size: 1.1rem; }

/* Footer - İyileştirilmiş */
.footer { background: var(--text-primary); color: white; padding: var(--spacing-3xl) 0 var(--spacing-lg); position: relative; overflow: hidden; }
/* Footer arka planına hafif bir desen veya gradyan */
.footer::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 1)); z-index: 0; }
.footer .container { position: relative; z-index: 1; }
.footer-content { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem; margin-bottom: var(--spacing-xl); }
.footer-logo { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.footer .logo-icon { filter: brightness(0) invert(1); /* Logoyu beyaz yap */ width: 48px; height: 48px; }
.footer-logo-title { font-size: 1.5rem; font-weight: 900; color: white; }
.footer-logo-subtitle { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-top: 0.5rem; max-width: 300px; }
.footer-title { font-size: 1.1rem; margin-bottom: 1.5rem; color: white; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: rgba(255,255,255,0.7); transition: var(--transition-base); display: inline-block; }
.footer-links a:hover { color: white; transform: translateX(5px); }
.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.1); color: rgba(255,255,255,0.5); font-size: 0.9rem; }

/* =========================================
   MOBİL İYİLEŞTİRMELERİ (Responsive)
   ========================================= */

/* Tablet (992px ve altı) */
@media (max-width: 992px) {
    .section-header { margin-bottom: var(--spacing-xl); }
    .section-title { font-size: 2.25rem; }
    .mobile-menu-toggle { display: flex; }
    .nav-actions { display: none; }
    
    .nav-menu {
        position: fixed; top: 90px; left: 0; width: 100%; background: white;
        flex-direction: column; align-items: center; padding: 2rem 0;
        box-shadow: var(--shadow-xl); transform: translateY(-150%); transition: var(--transition-smooth); z-index: 1001;
        border-bottom: 2px solid var(--primary);
    }
    .nav-menu.active { transform: translateY(0); }
    .nav-link { font-size: 1.25rem; margin: 1rem 0; }

    .hero { padding-top: 110px; text-align: center; min-height: auto; padding-bottom: var(--spacing-3xl); }
    .hero::after { height: 80px; clip-path: ellipse(80% 100% at 50% 100%); }
    .hero-content { grid-template-columns: 1fr; gap: 4rem; }
    .hero-text { padding-right: 0; display: flex; flex-direction: column; align-items: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { align-items: flex-start; text-align: left; padding-left: 2rem; padding-right: 2rem; }
    .hero-visual { max-width: 600px; margin: 0 auto; perspective: none; }
    .dashboard-mockup { transform: none; box-shadow: var(--shadow-lg); }
    .dashboard-mockup:hover { transform: none; }
    .floating-card { display: none; }
    
    .who-grid, .testimonials-grid, .modules-grid, .footer-content, .features-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
    .contact-content { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .contact-form-wrapper { padding: 2rem; }
}

/* Telefon (576px ve altı) */
@media (max-width: 576px) {
    :root { --spacing-lg: 1.25rem; --spacing-xl: 2rem; --spacing-3xl: 4rem; }
    .container { padding: 0 1.25rem; }
    .nav-content { height: 80px; }
    
    /* LOGO MOBİL BOYUTU */
    .logo-icon { width: 44px; height: 44px; }
    .logo-title { font-size: 1.4rem; }
    .logo-subtitle { display: none; } /* Mobilde alt başlığı gizle */

    .section-title { font-size: 1.85rem; }
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-stats { padding: 1.5rem 0 0 0; }
    
    /* Gridler Tek Kolon */
    .who-grid, .testimonials-grid, .modules-grid, .features-grid, .footer-content, .mockup-stats-grid { grid-template-columns: 1fr !important; gap: 1.5rem; }
    
    .hero-actions { flex-direction: column; width: 100%; gap: 1rem; }
    .btn { width: 100%; }
    .mockup-chart { display: none; }
    .mockup-content { padding: 1rem; }
    
    .contact-form-wrapper { padding: 1.5rem; }
    .contact-detail { padding: 0.75rem; }
    .contact-icon { width: 40px; height: 40px; font-size: 1rem; }

    .timeline-number { left: -3.5rem; width: 2.5rem; height: 2.5rem; font-size: 1rem; border-width: 3px; }
    .how-timeline { padding-left: 2rem; border-width: 2px; }
    
    /* Hamburger Animasyonu */
    .mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
    .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }
}