/*
Theme Name: Yapı360 Çözüm Premium Management
Theme URI: http://yapicozum.com
Description: Ultra-premium consultancy and solution management theme for construction processes.
Version: 2.0.0
Author: Antigravity
Text Domain: yapicozum
*/

/* ==========================================================================
   CSS Variables - Ultra Premium Palette
   ========================================================================== */
:root {
    /* Colors */
    --color-bg-base: #F9F8F6;
    /* Light Cream/Stone */
    --color-bg-alt: #F1F0ED;
    /* Slightly darker stone */
    --color-primary: #4A4540;
    /* Deep Stone / Charcol */
    --color-accent: #D4C3A1;
    /* Muted Gold / Sand */
    --color-white: #FFFFFF;
    --color-text-main: #2C2926;
    --color-text-muted: #6B655F;
    --color-border: rgba(74, 69, 64, 0.1);

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Plus Jakarta Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 10rem;

    /* Effects */
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.03);

    /* Container */
    --container-width: 1400px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::after,
*::before {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    line-height: 1.7;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
.title-serif {
    font-family: var(--font-serif);
    font-weight: 500;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--spacing-xl) 0;
}

/* ==========================================================================
   BEM: Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: var(--transition-fast);
}

.header--sticky {
    background-color: rgba(249, 248, 246, 0.95);
    padding: var(--spacing-sm) 0;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.header__logo {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.header__nav-list {
    display: flex;
    gap: var(--spacing-md);
}

.header__nav-item {
    position: relative;
}

.header__nav-link {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    padding: 0.5rem 0;
}

.header__nav-link:hover,
.header__nav-item:hover>.header__nav-link {
    color: var(--color-primary);
}

/* Dropdown Menu */
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    min-width: 260px;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-fast);
    border: 1px solid var(--color-border);
}

.header__nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown__link {
    display: block;
    font-size: 0.9rem;
    padding: 0.6rem 0;
    color: var(--color-text-muted);
}

.dropdown__link:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

.header__cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ==========================================================================
   BEM: Button
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2.2rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
}

.btn--dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn--dark:hover {
    background-color: var(--color-accent);
}

.btn--outline {
    background-color: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   BEM: Hero
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero__content {
    max-width: 700px;
    z-index: 2;
}

.hero__eyebrow {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.1;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero__description {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero__visual {
    position: relative;
    height: 70vh;
    background: var(--color-bg-alt);
    overflow: hidden;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.9) grayscale(0.2);
}

/* ==========================================================================
   BEM: Stats/Trust Bar
   ========================================================================== */
.trust-bar {
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

.trust-bar__container {
    display: flex;
    justify-content: space-between;
}

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

.trust-item__label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

/* ==========================================================================
   BEM: Information Hub (Grid)
   ========================================================================== */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background-color: var(--color-border);
}

.info-card {
    background-color: var(--color-bg-base);
    padding: var(--spacing-lg);
    transition: var(--transition-fast);
}

.info-card:hover {
    background-color: var(--color-white);
    transform: translateY(-5px);
}

.info-card__category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.info-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.info-card__text {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.footer__title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-weight: 700;
}

.footer__link {
    display: block;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 0.8rem;
}

.footer__link:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
    }

    .hero__visual {
        display: none;
    }

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

    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--color-bg-base);
        z-index: 1001;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: var(--spacing-lg);
        transition: var(--transition-slow);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    }

    .header__nav--active {
        right: 0 !important;
        display: flex !important;
    }

    .header__nav-list {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .header__toggle {
        display: block;
        cursor: pointer;
        font-size: 1.5rem;
        color: var(--color-primary);
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 1rem 0 0 0;
        text-align: center;
        display: none;
    }

    .header__nav-item:hover .dropdown {
        display: block;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        grid-template-columns: 1fr;
    }
}