:root {
    --primary-color: #2563eb;
    --primary-hover-color: #1e40af;
    --secondary-color: #1f2937;
    --background-light: #f9fafb;
    --background-medium: #f3f4f6;
    --text-color: #374151;
    --light-border: #e5e7eb;
}

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

html {
    scroll-behavior: smooth;
}

.hizmet-karti,
#hizmetler,
#hakkimizda,
#iletisim {
    scroll-margin-top: 140px;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    background-image: url('images/arkaplan4.jpg');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.hamburger-menu-buton {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 40px;
    height: 35px;
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    padding: 5px;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.hamburger-menu-buton:hover {
    background-color: rgba(255, 255, 255, 1);
    transform: scale(1.05);
}

.hamburger-cizgisi {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
    border-radius: 2px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
}

.hamburger-menu-buton.acik .hamburger-cizgisi:nth-child(2) {
    opacity: 0;
}

.hamburger-menu-buton.acik .hamburger-cizgisi:first-child {
    transform: translateY(8px) rotate(45deg);
}

.hamburger-menu-buton.acik .hamburger-cizgisi:last-child {
    transform: translateY(-8px) rotate(-45deg);
}

.konteyner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

.ust-bilgi-cubugu {
    background: rgba(0, 0, 0, 0.8);
    padding: 0.5rem 0;
    font-size: 0.6rem;
}

.ust-bilgi-cubugu .konteyner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ust-bilgi-cubugu a {
    text-decoration: none;
    color: #d1d5db;
    transition: color 0.3s ease;
}

.ust-bilgi-cubugu a:hover {
    color: var(--primary-color);
}

.ust-bilgi-sol span {
    color: white;
    margin-right: 1.5rem;
}

.ust-bilgi-sag span {
    color: white;
    margin-right: -0.85rem;
}

.ust-bilgi-sag img {
    width: auto;
    height: 20px;
}

.ana-baslik {
    background: linear-gradient(rgba(255, 255, 255, 0.9));
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.ana-baslik .konteyner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.logo-alani {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.logo-simge {
    width: 3rem;
    height: 3rem;
    background-color: var(--primary-color);
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
}

.logo-simge .simge {
    width: 2.75rem;
    height: 2.75rem;
    color: #fff;
}

.logo-yazi {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
    line-height: 1.2;
}

.logo-alt-yazi {
    font-size: 0.875rem;
    color: #6b7280;
}

.ana-navigasyon {
    display: none;
}

.ana-navigasyon ul {
    list-style-type: none;
    display: flex;
    gap: 2rem;
}

.ana-navigasyon a {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.3s;
}

.ana-navigasyon a:hover {
    color: var(--primary-color);
}

.teklif-al-buton {
    display: none;
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.5rem 1.5rem;
    border-radius: 0.25rem;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.teklif-al-buton:hover {
    background-color: var(--primary-hover-color);
}

.teklif-al-buton a {
    text-decoration: none;
    color: #fff;
    transition: color 0.3s ease;
}

.alt-menu-container {
    position: relative;
}

.alt-menu-container .alt-menu {
    display: block;
    flex-direction: column;
    list-style: none;
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    width: 16rem;
    max-height: 600px;
    overflow-y: auto;
    background-color: #fff;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border-radius: 0.5rem;
    border: 1px solid var(--light-border);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 50;
}

.alt-menu-container:hover .alt-menu {
    opacity: 1;
    visibility: visible;
}

.alt-menu li {
    display: block;
    width: 100%;
}

.alt-menu li a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    border-bottom: 1px solid #f3f4f6;
    white-space: nowrap;
}

.alt-menu li:last-child a {
    border-bottom: none;
}

.alt-menu li a:hover {
    background-color: #f3f4f6;
    color: var(--primary-color);
}

.hero-bolumu {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 5rem 0;
    text-align: center;
}

.hero-baslik {
    font-size: 2.25rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.hero-baslik-2 {
    font-size: 2.25rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    color: black;
}

.hero-aciklama {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-butonlar {
    align-items: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.buton {
    padding: 0.75rem 2rem;
    border-radius: 0.25rem;
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    border: none;
}

.buton.mavi {
    background-color: var(--primary-color);
    color: #fff;
}

.buton.mavi:hover {
    background-color: var(--primary-hover-color);
}

.buton.mavi a {
    text-decoration: none;
    color: #fff;
    transition: color 0.3s ease;
}

.buton.beyaz {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.buton.beyaz:hover {
    background-color: #fff;
    color: var(--primary-color);
}

.buton.beyaz a {
    text-decoration: none;
    color: #fff;
    transition: color 0.3s ease;
}

.buton.beyaz a:hover {
    color: var(--primary-color);
}

.buton.buyuk {
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.baslik-alani {
    text-align: center;
    margin-bottom: 3rem;
}

.bolum-basligi {
    font-size: 1.875rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.bolum-basligi-beyaz {
    font-size: 1.875rem;
    font-weight: bold;
    color: white;
    margin-bottom: 1rem;
}

.bolum-aciklamasi {
    color: #6b7280;
    font-size: 1.125rem;
}

.hizmetler-bolumu {
    padding: 4rem 0;
    background: linear-gradient(rgba(255, 255, 255, 0.9));
}

.hizmetler-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.hizmet-karti {
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    text-align: center;
    position: relative;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    height: 300px;
    min-height: 250px;
}

.hizmet-karti::before {
    border-radius: 0.5rem;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    z-index: 1;
}

.hizmet-karti a,
.hizmet-karti .simge-kutusu,
.hizmet-basligi,
.hizmet-metni {
    position: relative;
    z-index: 2;
}

#parselnakliyat {
    background-image: url('images/2.jpg');
}

#expressnakliyat {
    background-image: url('images/3.jpg');
}

#depolamanakliyat {
    background-image: url('images/13.jpg');
}

#karayolunakliyat {
    background-image: url('images/14.jpg');
}

#evdenevenakliyat {
    background-image: url('images/16.jpg');
}

#ofisnakliyat {
    background-image: url('images/11.jpg');
}

#ithalatveihracatnakliyat {
    background-image: url('images/19.jpg');
}

#sehirlerarasinakliyat {
    background-image: url('images/10.jpg');
}

.hizmet-karti a {
    text-decoration: none;
    text-shadow: 1px 1px 3px black, -1px -1px 3px black, 1px -1px 3px black, -1px 1px 3px black;
}

.simge-kutusu {
    width: 4rem;
    height: 4rem;
    background-color: #e0e7ff;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.simge-hizmet {
    width: 2rem;
    height: 2rem;
    color: var(--primary-color);
}

.hizmet-basligi {
    font-size: 1.25rem;
    font-weight: bold;
    color: white;
    margin-bottom: 0.75rem;
}

.hizmet-metni {
    color: ghostwhite;
    margin-bottom: 1rem;
}

.hizmet-listesi {
    list-style: none;
    text-align: left;
    color: #6b7280;
    font-size: 0.875rem;
    line-height: 1.5;
}

.hizmet-detaylari {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.8));
    border-radius: 30px;
    padding: 4rem 0;
}

.detay-kutusu {
    max-width: 64rem;
    margin: 0 auto;
}

.metin-kutusu {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
    padding: 2rem;
    border-radius: 0.5rem;
}

.metin-kutusu p {
    color: whitesmoke;
    font-size: 1.125rem;
    line-height: 1.6;
}

.hizmet-sehirleri {
    padding: 4rem 0;
    background: linear-gradient(rgba(255, 255, 255, 0.9));
}

.sehirler-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 64rem;
    margin: 0 auto;
}

.sehir-kutusu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: #fff;
    border-radius: 0.5rem;
    transition: background-color 0.3s;
}

.sehir-kutusu:hover {
    background-color: #e0e7ff;
}

.sehir-kutusu a {
    text-decoration: none;
    color: inherit;
}

.sehir-kutusu a:hover {
    color: #007bff;
}

.sehir-noktasi {
    width: 0.75rem;
    height: 0.75rem;
    background-color: var(--primary-color);
    border-radius: 9999px;
}

.sehirler-alt-yazi {
    text-align: center;
    margin-top: 2rem;
}

.sehirler-alt-yazi p {
    color: #6b7280;
    margin-bottom: 1rem;
}

.bosluk {
    background: linear-gradient(rgba(0, 0, 0, 0.6));
    width: 100%;
    height: 70px;
}

.hakkimizda-bolumu {
    background: linear-gradient(rgba(255, 255, 255, 0.9));
    padding: 4rem 0;
}

.hakkimizda-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.hakkimizda-sol p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.ozellikler-listesi {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ozellik {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tik-simge {
    width: 2rem;
    height: 2rem;
    background-color: var(--primary-color);
    border-radius: 9999px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.form-kutusu {
    background-color: var(--background-medium);
    padding: 2rem;
    border-radius: 0.5rem;
}

.form-basligi {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.teklif-formu {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.iletisim-bolumu {
    padding: 4rem 0;
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
}

.iletisim-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
}

.simge-kutusu-iletisim {
    width: 4rem;
    height: 4rem;
    background-color: #e0e7ff;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.simge-iletisim {
    width: 2rem;
    height: 2rem;
    color: var(--primary-color);
}

.iletisim-basligi {
    font-size: 1.125rem;
    font-weight: bold;
    color: white;
    margin-bottom: 0.5rem;
}

.iletisim-bilgisi {
    font-weight: bold;
    color: ghostwhite;
}

.iletisim-alt-yazi {
    color: #999;
    font-size: 0.875rem;
}

/* --- Referanslar Bölümü (References Section) --- */
.referanslar-bolumu {
    padding: 4rem 0;
    background: linear-gradient(rgba(255, 255, 255, 0.9));
}

.referanslar-baslik {
    text-align: center;
    margin-bottom: 3rem;
}

.referanslar-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.referans-logosu {
    display: grid;
    grid-template-rows: 80% 20%;
    place-items: center;
    width: 120px;
    height: 120px;
    transition: transform 0.3s ease;
    cursor: default;
}

.referans-logosu:hover {
    transform: scale(1.1);
}

.referans-logosu img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    margin-bottom: 0;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.referans-logosu img:hover {
    filter: grayscale(0%);
}

.referans-logosu span {
    font-size: 0.875rem;
    color: var(--text-color);
    font-weight: 600;
}

.referans-kulturas {
    width: 250px;
    height: 250px;
    margin: 2rem 0;
}

.referans-kulturas:hover {
    transform: scale(1.05);
}

.referans-kulturas img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: none;
}

.referans-kulturas span {
    font-size: 1.5rem;
    font-weight: 700;
}

.alt-bilgi {
    background-color: #1f2937;
    color: #fff;
    padding: 4rem 0;
}

.alt-bilgi a {
    text-decoration: none;
    color: #d1d5db;
    transition: color 0.3s ease;
}

.alt-bilgi a:hover {
    color: var(--primary-color);
}

.alt-bilgi-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.alt-bilgi-baslik, .alt-bilgi-liste-baslik {
    font-size: 1.125rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.alt-bilgi-metni {
    color: #d1d5db;
    font-size: 0.875rem;
}

.alt-bilgi-liste, .iletisim-bilgileri-footer {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #d1d5db;
}

.telif-hakki-cubugu {
    border-top: 1px solid #4b5563;
    margin-top: 2rem;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

.sabit-buton {
    position: fixed;
    bottom: 1rem;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    cursor: pointer;
    transition: transform 0.3s;
    z-index: 100;
}

.sabit-buton img {
    width: 2rem;
    height: auto;
}

.sabit-buton:hover {
    transform: scale(1.1);
}

.sabit-buton.telefon {
    background-color: #8ac149;
    left: 1rem;
}

.sabit-buton.whatsapp {
    background-color: #25d366;
    right: 1rem;
}

.simge-sabit {
    width: 1.5rem;
    height: 1.5rem;
    color: #fff;
}

@media (min-width: 768px) {
    body {
        padding-top: 100px;
    }

    .ust-bilgi-cubugu {
        position: fixed;
        width: 100%;
        top: 0;
        left: 0;
        z-index: 100;
        background: rgba(0, 0, 0, 0.8);
        font-size: 14px;
    }
    
    .ana-baslik {
        position: fixed;
        width: 100%;
        top: 30px;
        left: 0;
        z-index: 99;
        background: linear-gradient(rgba(255, 255, 255, 0.9));
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }
    
    .ana-baslik .konteyner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 0;
    }

    .ana-navigasyon {
        display: block;
        position: static;
        width: auto;
        height: auto;
        background: none;
        box-shadow: none;
        transform: none;
        z-index: auto;
        overflow: visible;
    }

    .ana-navigasyon ul {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 1.5rem; /* Boşluğu 3rem'den 1.5rem'e düşürdük */
        padding-top: 0;
        font-size: 14px;
        white-space: nowrap; /* Bu satırı ekleyerek menü elemanlarının alt alta gelmesini engelledik */
    }

    .ana-navigasyon a {
        padding: 0.5rem 0.5rem; /* Yan boşlukları küçülttük */
        border-bottom: none;
    }
    
    .alt-menu-container .alt-menu {
        position: absolute;
        width: 16rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        border: 1px solid var(--light-border);
    }

    .alt-menu a {
        margin-left: 0;
        font-size: 14px;
    }

    .hamburger-menu-buton {
        display: none;
    }

    .teklif-al-buton {
        display: block;
    }
    
    .hizmetler-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sehirler-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hakkimizda-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .iletisim-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .referans-grid {
        justify-content: space-around;
        gap: 3rem;
    }

    .alt-bilgi-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 767px) {
    body {
        background-image: url('images/arkaplan2.jpg');
    }

    .hizmet-karti,
    #hizmetler,
    #hakkimizda,
    #iletisim {
        scroll-margin-top: 20px;
    }

    .ana-baslik .konteyner {
        justify-content: space-between;
        position: relative;
    }

    .hamburger-menu-buton {
        display: flex;
        position: fixed;
        top: 75px;
        right: 20px;
        z-index: 1003;
        background-color: rgba(255, 255, 255, 0.9);
        border: 1px solid #ddd;
        border-radius: 4px;
        padding: 5px;
        width: 40px;
        height: 35px;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.2s ease;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }
    
    .hamburger-cizgisi {
        background-color: #333;
    }

    .ust-bilgi-cubugu span {
        font-size: 8px;
    }

    .ust-bilgi-sag img {
        width: auto;
        height: 15px;
    }

    .ana-navigasyon {
        display: block;
        position: fixed;
        top: 10px;
        right: 0;
        width: 300px;
        border-radius: 15px;
        height: calc(100vh - 70px);
        background-color: rgba(255, 255, 255, 0.95);
        box-shadow: -4px 0 10px rgba(0, 0, 0, 0.1);
        z-index: 1001;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
    }

    .ana-navigasyon.acik {
        transform: translateX(0);
    }

    .ana-navigasyon ul {
        flex-direction: column;
        gap: 0;
    }

    .ana-navigasyon li {
        width: 100%;
    }

    .ana-navigasyon a {
        display: block;
        padding: 1rem 1.5rem;
        border-bottom: 1px solid #e5e7eb;
    }
    
    .alt-menu {
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
        background-color: #f3f4f6;
        box-shadow: none !important;
        border: none !important;
        padding-left: 1rem;
        width: 100% !important;
    }
    
    .alt-menu a {
        margin-left: 20px;
        font-size: 0.85rem;
    }
    
    .teklif-al-buton {
        display: none;
    }

    .logo-alani {
        z-index: 1001;
    }

    .hizmet-metni {
        font-size: 12px;
    }

    .sehirler-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .sehirler-grid span {
        font-size: 11px;
    }

    .sehir-noktasi {
        width: 0.55rem;
        height: 0.55rem;
    }
    
    .hakkimizda-bolumu {
        background: linear-gradient(rgba(255, 255, 255, 0.9));
        padding: 4rem 0;
    }
}

@media (min-width: 1024px) {
    .sehirler-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #4CAF50;
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
    transform: translateY(-70px);
    font-family: Arial, sans-serif;
    font-size: 16px;
}

.notification.show {
    opacity: 1;
    transform: translateY(0);
}

.notification-error {
    background-color: #f44336;
}