/* design tokens | pseudo-class | "root" has higher specificity than "html" */
/* add color, sppacing, radius & transition here */
:root {
    --bg-color: #ffffff;
    /* custom properties */
    --text-primary: #111827;
    --text-secondary: #374151;
    --accent-color: #2563eb;
    --font-sans: "Inter", sans-serif;
    --font-mono: "JetBrains Mono", monospace;
}

.text-muted {
    color: var(--text-secondary) !important;
}

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

/* typography overrides */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-primary);
    font-weight: 700;
}

/* fluid font sizes */
.display-1 {
    /* auto-scale for screen size or zoom */
    font-size: clamp(2.5rem, 5vw + 1rem, 5rem) !important;
    /* override bootstrap */
    line-height: 1.1;
}

.lead {
    font-size: clamp(1rem, 1.5vw, 1.25rem) !important;
}


.hero-bg-code {
    font-size: 0.9rem;
    color: #cbd5e1;
    z-index: -1;
    line-height: 1.8;
    display: none;
    /* hide for mobile or high zoom - mobile-first */
}

/* display IF the screen is larger*/
@media (min-width: 992px) {
    .hero-bg-code {
        display: block;
    }
}

.font-mono {
    font-family: var(--font-mono);
}

.text-accent {
    color: var(--accent-color) !important;
}

.text-secondary-custom {
    color: var(--text-secondary);
}


.blur-nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-link {
    color: var(--text-primary) !important;
    margin-left: 1rem;
    position: relative;
}

.nav-link:hover {
    color: var(--accent-color) !important;
}


.hero-bg-code {
    font-size: 0.9rem;
    color: #cbd5e1;
    z-index: -1;
    line-height: 1.8;
}

.mw-600 {
    max-width: 600px;
}


.btn-custom-primary,
.btn-custom-dark {
    padding: 12px 24px;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 1px solid;
}


.btn-custom-primary {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background-color: transparent;
}

.btn-custom-primary:hover {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--accent-color);
}


.btn-custom-dark {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background-color: transparent;
}

.btn-custom-dark:hover {
    background-color: var(--text-primary);
    color: #ffffff;
}


/* cards & sections */
.bg-light-custom {
    background-color: #f9fafb;
}

.section-title {
    font-size: 1.75rem;
    display: flex;
    align-items: center;
}

/* numbered section headers after the title nej.dev() */
.section-title::after {
    content: "";
    display: block;
    flex-grow: 1;
    max-width: 200px;
    height: 1px;
    background: #e5e7eb;
    margin-left: 20px;
}

/* tech badges */
.badge-custom {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-color);
    background: rgba(37, 99, 235, 0.05);
    padding: 5px 10px;
    border-radius: 4px;
}

/* project cards */
.project-card {
    background: #fff;
    padding: 2rem;
    border-radius: 4px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    border: 1px solid #f3f4f6;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}


.timeline {
    border-left: 2px solid #e5e7eb;
    padding-left: 2rem;
    margin-left: 1rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -2.4rem;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--accent-color);
    border-radius: 50%;
}

/* overall rem use for accessibility - no hardcoding with px
- browser default: 1rem = 16px */


/* Feature update: Language switcher & en-US localization in addition to tr-TR */
/* --- Language Switcher: Soft Pill Style --- */
.lang-switch {
    background-color: transparent;
    padding: 0;
    cursor: pointer;
}

.lang-btn {
    padding: 4px 10px;
    /* Kutucuk boyutu */
    border-radius: 6px;
    /* Köşeleri yuvarla */
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 500;
    color: var(--text-secondary);
    /* Pasif renk */
}

/* Mouse ile üzerine gelince */
.lang-btn:hover {
    color: var(--accent-color) !important;
    background-color: rgba(37, 99, 235, 0.05);
    /* Çok hafif mavi */
}

/* Aktif Dilin Görünümü */
.lang-btn.active {
    background-color: rgba(37, 99, 235, 0.1);
    /* Hafif Mavi Arkaplan */
    color: var(--accent-color) !important;
    /* Mavi Yazı */
    font-weight: 700;
}

/* Pasif Dilin Görünümü */
.lang-btn.inactive {
    opacity: 0.6;
}

.lang-btn.inactive {
    color: #9ca3af;
    font-weight: 400;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.site-footer {
    text-align: center;
    padding: 20px;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.unicorn-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: #f0f0f0;
    text-decoration: none;
    font-size: 1.2rem;
    transition: transform 0.2s ease, background-color 0.2s ease;
    border: 1px solid #ddd;
}

.unicorn-btn:hover {
    transform: scale(1.1);
    background-color: #e0c3fc;
}