/* css/main.css - Ana Stil Dosyası */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== ROOT VARIABLES ===== */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c);
    --text-dark: #1a202c;
    --text-light: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --transition-base: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background-color: #f7fafc;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

/* ===== UTILITY CLASSES ===== */
.gradient-bg {
    background: var(--secondary-gradient);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

.hover-lift {
    transition: all 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ===== NAVIGATION ===== */
.nav-link {
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    transition: var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
}

/* ===== CARDS ===== */
.card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

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

.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.service-card:hover::before {
    left: 100%;
}

/* ===== FORMS ===== */
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* ===== SECTIONS ===== */
section {
    position: relative;
}

.section-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.1) 35px, rgba(255,255,255,.1) 70px);
    pointer-events: none;
}

/* ===== PORTFOLIO GRID ===== */
.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    cursor: pointer;
}

.portfolio-item img {
    transition: transform 0.5s ease;
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    padding: 2rem;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

/* ===== TECH STACK ===== */
.tech-card {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
}

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

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--primary-gradient);
}

.timeline-item {
    position: relative;
    padding: 2rem;
    width: calc(50% - 2rem);
}

.timeline-item:nth-child(odd) {
    margin-left: auto;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background: white;
    border: 3px solid #667eea;
    border-radius: 50%;
}

.timeline-item:nth-child(odd)::before {
    left: -2.5rem;
}

.timeline-item:nth-child(even)::before {
    right: -2.5rem;
}

/* ===== LOADER ===== */
.loader {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(102, 126, 234, 0.2);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ===== TOOLTIP ===== */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    white-space: nowrap;
    font-size: 0.875rem;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    z-index: 999;
}

.mobile-menu-overlay.active {
    display: block;
}

/* ===== RESPONSIVE UTILITIES ===== */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }
    
    .show-mobile {
        display: block !important;
    }
    
    .timeline::before {
        left: 2rem;
    }
    
    .timeline-item {
        width: calc(100% - 4rem);
        margin-left: 4rem !important;
    }
    
    .timeline-item::before {
        left: -2.5rem !important;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    section {
        padding: 3rem 0;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    header, footer, .no-print {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
    }
    
    a {
        text-decoration: none;
        color: inherit;
    }
}