/* Genel Stil ve Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light Tema Renkleri */
    --body-bg: #f8f9fa;
    --text-color: #343a40;
    --heading-color: #0056b3;
    --link-color: #007bff;
    --link-hover-color: #0056b3;
    --header-bg: #ffffff;
    --header-shadow: 0 1px 5px rgba(0,0,0,0.08);
    --header-border-bottom: 1px solid #e9ecef;
    --nav-link-color: #495057;
    --hero-bg: #e9f5ff;
    --hero-text-color: #6c757d;
    --search-bg: #fff;
    --search-shadow: 0 4px 15px rgba(0,0,0,0.08);
    --search-border: 1px solid #ced4da;
    --search-input-color: #495057;
    --search-btn-bg: #007bff;
    --search-btn-hover-bg: #0056b3;
    --section-bg: #ffffff;
    --section-heading-color: #343a40;
    --section-heading-line: #007bff;
    --card-bg: #fff;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.05);
    --card-border: 1px solid #e9ecef;
    --card-hover-shadow: 0 6px 15px rgba(0,0,0,0.1);
    --card-heading-color: #0056b3;
    --card-description-color: #6c757d;
    --expiry-color: #dc3545;
    --deal-btn-bg: #28a745;
    --deal-btn-hover-bg: #218838;
    --footer-bg: #343a40;
    --footer-text-color: #f8f9fa;
    /* Toggle butonu için değişkenler */
    --toggle-slider-bg-light: #ced4da;
    --toggle-slider-bg-dark: #3a4750;
    --toggle-knob-bg-light: #ffffff;
    --toggle-knob-bg-dark: #ffffff;
    --icon-color-moon: #f8f9fa;
    --icon-color-sun: #ffc107;
    /* Kupon kodu butonu için renkler */
    --coupon-code-btn-bg: #007bff;
    --coupon-code-btn-text: #ffffff;
    --coupon-code-btn-border: 1px solid #007bff;
    --coupon-code-btn-hover-bg: #0056b3;
    --copied-message-bg: #4CAF50;
    --copied-message-text: #ffffff;
    /* Header yüksekliğini dinamik olarak ayarla */
    --header-height: 60px; /* Yaklaşık bir değer, tasarımınıza göre ayarlayın */
}

.dark-theme {
    /* Dark Tema Renkleri */
    --body-bg: #222831;
    --text-color: #eeeeee;
    --heading-color: #74b9ff;
    --link-color: #89cff0;
    --link-hover-color: #5d9ee0;
    --header-bg: #2b323c;
    --header-shadow: 0 1px 5px rgba(0,0,0,0.3);
    --header-border-bottom: 1px solid #3c424d;
    --nav-link-color: #d1d8e0;
    --hero-bg: #323d4a;
    --hero-text-color: #cccccc;
    --search-bg: #3a4750;
    --search-shadow: 0 4px 15px rgba(0,0,0,0.2);
    --search-border: 1px solid #4a5661;
    --search-input-color: #eeeeee;
    --search-btn-bg: #007bff;
    --search-btn-hover-bg: #0056b3;
    --section-bg: #2b323c;
    --section-heading-color: #d1d8e0;
    --section-heading-line: #89cff0;
    --card-bg: #3a4750;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.2);
    --card-border: 1px solid #4a5661;
    --card-hover-shadow: 0 6px 15px rgba(0,0,0,0.3);
    --card-heading-color: #89cff0;
    --card-description-color: #cccccc;
    --expiry-color: #ff6b6b;
    --deal-btn-bg: #4caf50;
    --deal-btn-hover-bg: #43a047;
    --footer-bg: #1c2128;
    --footer-text-color: #d1d8e0;
    /* Kupon kodu butonu için koyu tema renkleri */
    --coupon-code-btn-bg: #89cff0;
    --coupon-code-btn-text: #222831;
    --coupon-code-btn-border: 1px solid #89cff0;
    --coupon-code-btn-hover-bg: #5d9ee0;
    --copied-message-bg: #4CAF50;
    --copied-message-text: #ffffff;
}


body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: var(--body-bg);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

a:hover {
    color: var(--link-hover-color);
}

ul {
    list-style: none;
}

/* Başlık Alanı (Header) */
.main-header {
    background-color: var(--header-bg);
    color: var(--text-color);
    padding: 15px 0;
    box-shadow: var(--header-shadow);
    border-bottom: var(--header-border-bottom);
    transition: background-color 0.3s ease, box-shadow 0.3s ease, border-bottom 0.3s ease;
}

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

.logo {
    font-size: 26px;
    font-weight: 700;
}

.logo a {
    color: var(--link-color);
    text-decoration: none;
}

.main-nav {
    display: flex;
    align-items: center;
    position: relative; /* Mobil menü açıldığında konumlandırma için */
    height: var(--header-height); /* Hamburger butonunun hizalanması için */
}

/* Masaüstü Navigasyon Bağlantıları Kapsayıcısı */
.nav-links-container {
    display: flex;
    align-items: center;
}

.main-nav ul {
    display: flex;
    margin-right: 20px; /* Tema değiştirme butonu ile arasında boşluk */
}

.main-nav ul li {
    margin-left: 25px;
}

.main-nav ul li a {
    color: var(--nav-link-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover {
    color: var(--link-color);
}

/* Hamburger menü butonu - varsayılan olarak masaüstünde gizli */
.hamburger {
    display: none; /* Masaüstünde gizli */
    background: none;
    border: none;
    font-size: 24px;
    color: var(--nav-link-color);
    cursor: pointer;
    padding: 5px;
    transition: color 0.3s ease;
}

.hamburger:hover {
    color: var(--link-color);
}

/* TEMA GEÇİŞ ANAHTARI (TOGGLE SWITCH) STILLERİ */
.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px; /* Switch genişliği */
    height: 34px; /* Switch yüksekliği */
    margin-left: 20px;
}

/* Gizli checkbox */
.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

/* Slider (toggle anahtarının arka planı) */
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--toggle-slider-bg-light);
    transition: .4s;
    border-radius: 34px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8px;
}

/* Slider'ın hareket eden topu (knob) */
.slider::before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: var(--toggle-knob-bg-light);
    transition: .4s;
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* Checkbox işaretlendiğinde slider'ın rengi değişsin (koyu tema aktif) */
input:checked + .slider {
    background-color: var(--link-color);
}

/* Checkbox işaretlendiğinde top sağa kaysın */
input:checked + .slider::before {
    transform: translateX(26px);
}

/* Slider içindeki ikonlar */
.slider .sun-icon,
.slider .moon-icon {
    position: absolute;
    font-size: 14px;
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
    line-height: 1;
}

.slider .sun-icon {
    left: 8px;
    color: var(--icon-color-sun);
    opacity: 1;
    transform: translateX(0);
}

.slider .moon-icon {
    right: 8px;
    color: var(--icon-color-moon);
    opacity: 0;
    transform: translateX(5px);
}

/* Checkbox işaretlendiğinde (koyu tema), güneşi gizle, ayı göster */
input:checked + .slider .sun-icon {
    opacity: 0;
    transform: translateX(-5px);
}

input:checked + .slider .moon-icon {
    opacity: 1;
    transform: translateX(0);
}

/* Koyu temada slider'ın boş rengi ve top rengi */
.dark-theme .slider {
    background-color: var(--toggle-slider-bg-dark);
}
.dark-theme input:checked + .slider::before {
    background-color: var(--toggle-knob-bg-dark);
}


/* Hero Section (Ana Tanıtım Alanı) */
.hero-section {
    background-color: var(--hero-bg);
    color: var(--text-color);
    padding: 100px 0;
    text-align: center;
    border-bottom: var(--header-border-bottom);
    transition: background-color 0.3s ease, border-bottom 0.3s ease;
}

.hero-section h2 {
    font-size: 38px;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--heading-color);
}

.hero-section p {
    font-size: 18px;
    margin-bottom: 40px;
    color: var(--hero-text-color);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.search-bar {
    display: flex;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--search-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--search-shadow);
    border: var(--search-border);
    transition: background-color 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
}

.search-bar input[type="text"] {
    flex-grow: 1;
    padding: 16px 20px;
    border: none;
    font-size: 16px;
    outline: none;
    color: var(--search-input-color);
    background-color: var(--search-bg);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.search-bar button {
    background-color: var(--search-btn-bg);
    color: #fff;
    border: none;
    padding: 16px 35px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.search-bar button:hover {
    background-color: var(--search-btn-hover-bg);
}

/* Son Eklenen Fırsatlar Bölümü */
.latest-deals-section {
    padding: 80px 0;
    background-color: var(--section-bg);
    transition: background-color 0.3s ease;
}

.latest-deals-section h3 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--section-heading-color);
    position: relative;
    padding-bottom: 10px;
}

.latest-deals-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--section-heading-line);
    border-radius: 2px;
}

.deals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.deal-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    padding: 25px;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, border 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

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

.deal-card img {
    max-width: 100%;
    height: 70px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 4px;
    filter: grayscale(10%);
    opacity: 0.9;
}

.deal-card h4 {
    font-size: 20px;
    color: var(--card-heading-color);
    margin-bottom: 10px;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.deal-card .description {
    font-size: 14px;
    color: var(--card-description-color);
    margin-bottom: 15px;
    flex-grow: 1;
}

.deal-card .expiry {
    font-size: 13px;
    color: var(--expiry-color);
    font-weight: 500;
    margin-bottom: 20px;
}

.get-deal-btn {
    display: inline-block;
    background-color: var(--deal-btn-bg);
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    align-self: center;
    cursor: pointer;
    border: 1px solid var(--deal-btn-bg);
}

.get-deal-btn:hover {
    background-color: var(--deal-btn-hover-bg);
}

/* Kupon kodu gösterildiğinde düğmenin stili */
.coupon-code-btn {
    background-color: var(--coupon-code-btn-bg);
    color: var(--coupon-code-btn-text);
    font-family: 'Courier New', Courier, monospace;
    font-weight: 700;
    font-size: 16px;
    border: var(--coupon-code-btn-border);
    cursor: copy;
    letter-spacing: 0.5px;
}

.coupon-code-btn:hover {
    background-color: var(--coupon-code-btn-hover-bg);
    color: var(--coupon-code-btn-text);
}

/* Kopyalandı mesajı stili */
.copied-message {
    position: fixed; /* Sabit konum, sayfa kaydırılsa da görünür kalır */
    z-index: 1001; /* Diğer her şeyin üstünde görünür */
    background-color: var(--copied-message-bg);
    color: var(--copied-message-text);
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.copied-message.show {
    opacity: 1;
}

/* deal-detail.html sayfası için özel stiller */
.deal-detail-page .main-header .container .logo a {
    color: var(--link-color);
}

.deal-detail-content {
    padding: 60px 0;
    text-align: center;
}

.deal-detail-box {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
}

.deal-detail-box .detail-page-logo {
    max-width: 150px;
    height: auto;
    margin-bottom: 25px;
    border-radius: 5px;
}

.deal-detail-box .deal-title {
    font-size: 34px;
    color: var(--heading-color);
    margin-bottom: 15px;
}

.deal-detail-box .deal-description {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 25px;
    line-height: 1.8;
}

.deal-detail-box .deal-expiry {
    font-size: 16px;
    color: var(--expiry-color);
    font-weight: 600;
    margin-bottom: 30px;
}

.coupon-code-area {
    background-color: var(--hero-bg);
    border: 1px dashed var(--link-color);
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    position: relative;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.coupon-code-area .code-label {
    font-size: 16px;
    color: var(--nav-link-color);
    margin-bottom: 10px;
}

.coupon-code-area .coupon-code-text {
    display: inline-block;
    font-size: 28px;
    font-weight: 700;
    color: var(--coupon-code-btn-bg);
    background-color: transparent;
    padding: 5px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    letter-spacing: 1px;
    user-select: all;
    cursor: text;
}

.deal-detail-box .warning-text {
    font-size: 14px;
    color: var(--hero-text-color);
    margin-top: 20px;
}

/* Alt Bilgi (Footer) */
.main-footer {
    background-color: var(--footer-bg);
    color: var(--footer-text-color);
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.main-footer p {
    font-size: 14px;
    opacity: 0.9;
}


/* Responsive Tasarım */
@media (max-width: 768px) {
    .main-header .container {
        flex-direction: row; /* Logo ve hamburger ikonunu yan yana tut */
        justify-content: space-between; /* İki uca yasla */
        padding: 15px 20px;
    }

    .main-header .logo {
        margin: 0;
    }

    .main-nav {
        flex-direction: row;
        justify-content: flex-end; /* Hamburger ikonunu sağa yasla */
        width: auto;
        margin-top: 0;
        position: static;
        height: auto; /* Kapsayıcının yüksekliğini otomatik ayarla */
    }

    /* Hamburger ikonunu mobil cihazlarda göster */
    .hamburger {
        display: block;
        color: var(--text-color);
        order: 1; /* Hamburger'in nav içindeki sıralamasını değiştir (sağda olsun) */
    }

    /* Navigasyon bağlantılarını ve tema değiştirme anahtarını mobil cihazlarda varsayılan olarak gizle */
    .nav-links-container {
        display: none; /* Varsayılan olarak gizli */
        flex-direction: column;
        position: absolute; /* Header'a göre konumlandır */
        top: var(--header-height); /* Header'ın hemen altında başla */
        left: 0;
        width: 100%; /* Tam genişlikte olsun */
        background-color: var(--header-bg);
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        z-index: 999;
        padding: 15px 0;
        border-bottom-left-radius: 8px;
        border-bottom-right-radius: 8px;
        transition: top 0.3s ease-out; /* Açılma animasyonu */
    }

    /* 'nav-open' sınıfı eklendiğinde menüyü göster */
    .main-nav.nav-open .nav-links-container {
        display: flex; /* Menüyü göster */
        /* Eğer header yüksekliği dinamikse, --header-height değişkenini kullanın */
        top: var(--header-height);
    }

    .main-nav ul {
        flex-direction: column;
        margin-right: 0;
        width: 100%;
        padding: 0;
    }

    .main-nav ul li {
        margin: 0;
        padding: 10px 20px;
        text-align: left;
    }
    
    .main-nav ul li a {
        display: block;
    }

    .theme-switch {
        margin-left: 0;
        margin-top: 15px;
        align-self: center;
    }

    /* Footer için mobil düzenleme */
    .main-footer {
        padding: 20px 0;
    }

    .deal-detail-box {
        padding: 20px;
    }

    .deal-detail-box .deal-title {
        font-size: 28px;
    }

    .deal-detail-box .deal-description {
        font-size: 16px;
    }

    .coupon-code-area .coupon-code-text {
        font-size: 24px;
    }
}