/* ========================================
   PALALΙ İNŞAAT — ANA STİL DOSYASI
   Design Tokens + CSS Reset + Global Stiller
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */
:root {
    /* --- Renkler --- */
    --color-primary:        #1B2A4A;
    --color-primary-light:  #2D4A7A;
    --color-primary-dark:   #111D35;
    --color-accent:         #E8822A;
    --color-accent-hover:   #D06A18;
    --color-accent-light:   #FEF3E2;
    --color-white:          #FFFFFF;
    --color-bg:             #F5F6F8;
    --color-bg-alt:         #EEF0F4;
    --color-text:           #2D3748;
    --color-text-light:     #64748B;
    --color-text-muted:     #94A3B8;
    --color-border:         #E2E8F0;
    --color-border-light:   #F1F5F9;
    --color-success:        #16A34A;
    --color-danger:         #DC2626;
    --color-overlay:        rgba(27, 42, 74, 0.85);
    --color-overlay-light:  rgba(27, 42, 74, 0.6);

    /* --- Tipografi --- */
    --font-family:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs:   0.75rem;
    --font-size-sm:   0.875rem;
    --font-size-base: 1rem;
    --font-size-md:   1.125rem;
    --font-size-lg:   1.25rem;
    --font-size-xl:   1.5rem;
    --font-size-2xl:  1.75rem;
    --font-size-3xl:  2rem;
    --font-size-4xl:  2.5rem;
    --font-size-5xl:  3rem;
    --line-height:    1.75;
    --line-height-tight: 1.3;

    /* --- Boşluklar --- */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* --- Gölgeler --- */
    --shadow-sm:  0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md:  0 4px 12px -1px rgba(0, 0, 0, 0.15), 0 2px 6px -1px rgba(0, 0, 0, 0.08);
    --shadow-lg:  0 10px 20px -3px rgba(0, 0, 0, 0.15), 0 4px 8px -2px rgba(0, 0, 0, 0.08);
    --shadow-xl:  0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.2);

    /* --- Border Radius --- */
    --radius-sm:   4px;
    --radius-md:   8px;
    --radius-lg:   12px;
    --radius-xl:   16px;
    --radius-2xl:  24px;
    --radius-full: 50px;
    --radius-circle: 50%;

    /* --- Layout --- */
    --container-max:    1280px;
    --container-narrow: 960px;
    --header-height:    80px;
    --topbar-height:    40px;

    /* --- Geçişler --- */
    --transition-fast:   0.15s ease;
    --transition-base:   0.3s ease;
    --transition-slow:   0.5s ease;
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========================================
   CSS RESET
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

button {
    cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    font-weight: 700;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-xl);  font-weight: 600; }
h4 { font-size: var(--font-size-lg);  font-weight: 600; }

p {
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

/* ========================================
   GLOBAL UTILITY CLASSES
   ======================================== */

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container-narrow {
    max-width: var(--container-narrow);
}

/* --- Section Padding --- */
.section {
    padding: var(--space-3xl) 0;
}

.section-sm {
    padding: var(--space-3xl) 0;
}

.section-bg {
    background-color: var(--color-bg);
}

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

/* --- Section Headers --- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header .section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: var(--space-xs) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header p {
    color: var(--color-text-light);
    font-size: var(--font-size-md);
}

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-light); }

/* --- Flex / Grid Utilities --- */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { flex-direction: column; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* --- Grid --- */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --- Visibility --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   SCROLL REVEAL ANIMATIONS
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delay for children */
.reveal-stagger > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.5s; }
.reveal-stagger > *:nth-child(7) { transition-delay: 0.6s; }
.reveal-stagger > *:nth-child(8) { transition-delay: 0.7s; }

/* ========================================
   SELECTION & SCROLLBAR
   ======================================== */
::selection {
    background-color: var(--color-accent);
    color: var(--color-white);
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}