/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --clr-bg-dark: #2563eb;
    /* Ana Açık/Canlı Mavi */
    --clr-bg-darker: #1e40af;
    /* Koyu Kurumsal Mavi */
    --clr-bg-light: #eff6ff;
    /* Sayfa Geneli Çok Açık Mavi */
    --clr-bg-card: #ffffff;

    --clr-primary: #1e40af;
    --clr-primary-dark: #1e3a8a;
    /* Metinlerde Koyu Mavi */
    --clr-accent: #d4af37;
    /* Premium Gold */
    --clr-accent-hover: #b99324;

    --clr-text: #334155;
    /* Slate 700 */
    --clr-text-light: #64748b;
    /* Slate 500 */
    --clr-text-white: #f8fafc;

    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;

    /* Transitions & Shadows */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: var(--font-sans);
    color: var(--clr-text);
    background-color: var(--clr-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--clr-primary);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* ===== LAYOUT & UTILITIES ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 2rem;
}

.bg-light {
    background-color: var(--clr-bg-card);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--clr-primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--clr-accent);
}

.section-desc {
    color: var(--clr-text-light);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-bg-darker);
    font-weight: 600;
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-text-white);
    color: var(--clr-text-white);
}

.btn-outline:hover {
    background-color: var(--clr-text-white);
    color: var(--clr-bg-dark);
}

.btn-secondary {
    background-color: var(--clr-primary);
    color: var(--clr-text-white);
}

.btn-secondary:hover {
    background-color: var(--clr-bg-darker);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(30, 64, 175, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header.scrolled {
    padding: 0.8rem 0;
    box-shadow: var(--shadow-sm);
    background-color: rgba(30, 64, 175, 0.98);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-img {
    height: 45px;
    width: auto;
    border-radius: 4px;
    object-fit: contain;
}

.header-center-img {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 45px;
    flex-shrink: 0;
    margin: 0 1rem;
    /* logo-img ile aynı hizada olması için */
}

.header-center-img img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.logo-img-footer {
    height: 55px;
    width: auto;
    border-radius: 4px;
    object-fit: contain;
}

.logo-text-group {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-text-white);
    letter-spacing: 0.5px;
    line-height: 1.1;
    white-space: nowrap;
}

.logo-accent {
    color: var(--clr-accent);
}

.logo-subtext {
    font-size: 0.7rem;
    color: var(--clr-text-light);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 0.2rem;
    white-space: nowrap;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.nav-link {
    color: var(--clr-text-light);
    font-weight: 500;
    font-size: 0.85rem;
    position: relative;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--clr-text-white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--clr-accent);
    transition: var(--transition);
}

.nav-link:not(.nav-btn):hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.nav-btn::after {
    display: none;
}

.nav-btn {
    border: 1px solid var(--clr-accent);
    padding: 0.4rem 1rem;
    border-radius: 4px;
    color: var(--clr-accent);
    display: flex;
    align-items: center;
}

.nav-btn:hover {
    background-color: var(--clr-accent);
    color: var(--clr-bg-darker) !important;
}

.nav-accent {
    color: var(--clr-accent);
    font-weight: 700;
}

.nav-accent::after {
    background-color: var(--clr-accent);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--clr-text-white);
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-image: linear-gradient(135deg, var(--clr-bg-darker) 0%, var(--clr-bg-dark) 100%);
    padding-top: 80px;
    color: var(--clr-text-white);
}

/* Decorative backdrop pattern idea */
.hero-overlay {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: radial-gradient(circle at top right, rgba(212, 175, 55, 0.05), transparent 40%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.hero-text {
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--clr-accent);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    line-height: 1.1;
    color: var(--clr-text-white);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 3rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--clr-accent);
    line-height: 1;
}

.stat-label {
    color: var(--clr-text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

/* ===== MEVZUAT SECTION ===== */
.mevzuat-highlight {
    padding: 6rem 0;
    background-color: var(--clr-bg-light);
}

.mevzuat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.mevzuat-card {
    background-color: var(--clr-bg-card);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.mevzuat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0%;
    background-color: var(--clr-accent);
    transition: var(--transition);
}

.mevzuat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.mevzuat-card:hover::before {
    height: 100%;
}

.card-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--clr-bg-light);
    color: var(--clr-text-light);
    padding: 0.2rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-date {
    font-size: 0.85rem;
    color: var(--clr-accent);
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.card-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--clr-primary);
}

.card-excerpt {
    color: var(--clr-text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.read-more {
    font-weight: 600;
    color: var(--clr-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    color: var(--clr-accent);
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: 6rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2rem;
    background: transparent;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.service-card:hover {
    border-left-color: var(--clr-accent);
    background-color: var(--clr-bg-light);
}

.service-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--clr-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--clr-text-light);
    font-size: 0.95rem;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--clr-bg-darker);
    color: var(--clr-text-light);
    padding-top: 5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-desc {
    margin-top: 1.5rem;
    max-width: 400px;
}

.footer h4 {
    color: var(--clr-text-white);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-serif);
}

.footer-links ul li,
.footer-contact ul li {
    margin-bottom: 0.8rem;
}

.footer-links ul li a:hover {
    color: var(--clr-accent);
    padding-left: 5px;
}

.footer-contact ul li strong {
    color: var(--clr-text-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.9rem;
}

.footer-social {
    margin-top: 1.5rem;
}

.social-links {
    display: flex;
    gap: 0.8rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    color: var(--clr-text-white);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--clr-accent);
    color: var(--clr-bg-darker);
    transform: translateY(-3px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        /* simple hidden for mobile, can add JS toggle */
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* ===== ARTICLE / MEVZUAT DETAIL ===== */
.article-page {
    padding-top: 140px;
    padding-bottom: 6rem;
    background-color: var(--clr-bg-light);
}

.article-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
}

.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.article-tag {
    background-color: var(--clr-bg-darker);
    color: var(--clr-text-white);
    padding: 0.3rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.article-date {
    color: var(--clr-text-light);
    font-size: 0.95rem;
    font-weight: 500;
}

.article-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--clr-primary);
    margin-bottom: 2rem;
    line-height: 1.2;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--clr-bg-card);
    padding: 4rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    font-size: 1.15rem;
    color: var(--clr-text);
    line-height: 1.8;
}

.article-content h2,
.article-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--clr-primary);
    font-family: var(--font-serif);
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    list-style-type: disc;
}

.article-content li {
    margin-bottom: 0.8rem;
}

.article-content blockquote {
    border-left: 4px solid var(--clr-bg-dark);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--clr-text-light);
    background-color: rgba(37, 99, 235, 0.03);
    /* Çok hafif mavi arka plan */
    border-radius: 0 8px 8px 0;
}

.article-content strong {
    color: var(--clr-primary);
}

.back-link-container {
    max-width: 800px;
    margin: 0 auto 2rem auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--clr-text-light);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--clr-bg-dark);
    transform: translateX(-5px);
}

@media (max-width: 768px) {
    .article-title {
        font-size: 2rem;
    }

    .article-content {
        padding: 2rem;
    }
}

/* ===== SHARE BUTTONS ===== */

.share-container {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.share-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--clr-primary);
}

.share-buttons {
    display: flex;
    gap: 1rem;
}

.btn-share {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-bg-card);
    transition: var(--transition);
}

.btn-whatsapp {
    background-color: #25D366;
}

.btn-whatsapp:hover {
    background-color: #128C7E;
    transform: translateY(-2px);
}

.btn-linkedin {
    background-color: #0A66C2;
}

.btn-linkedin:hover {
    background-color: #004182;
    transform: translateY(-2px);
}

/* Document Download Cards */
.doc-card {
    background-color: var(--clr-text-white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-left: 4px solid var(--clr-accent);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.doc-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-download {
    padding: 0.6rem;
    border-radius: 8px;
    background-color: var(--clr-bg-light);
    color: var(--clr-primary);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-download:hover {
    background-color: var(--clr-primary);
    color: var(--clr-text-white);
}

.doc-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.doc-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--clr-text);
}

.doc-info span {
    font-size: 0.8rem;
    color: var(--clr-text-light);
}

/* Announcement Banner */
.announcement-banner {
    width: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.92), rgba(30, 64, 175, 0.85)), url('../img/muhasebeciler-haftasi.png');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    padding-top: 110px;
    /* Sabit header için boşluk */
    padding-bottom: 3rem;
    position: relative;
}

.announcement-inner {
    max-width: var(--max-w);
    width: 100%;
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: var(--clr-text-white);
    position: relative;
    z-index: 2;
}

.announce-badge {
    background-color: var(--clr-accent);
    color: var(--clr-bg-darker);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.announce-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--clr-text-white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.announce-desc {
    font-size: 1.15rem;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto 2rem auto;
    color: rgba(255, 255, 255, 0.95);
}

@media (max-width: 768px) {
    .announcement-inner {
        padding: 3rem 1.5rem;
    }

    .announce-title {
        font-size: 1.8rem;
    }

    .announce-desc {
        font-size: 1rem;
    }
}