/* ============================================
   HEC Turkey - Responsive Stylesheet
   Mobile-First Responsive Design
   ============================================ */

/* ============================================
   BREAKPOINTS:
   - Desktop: 1200px and up (default)
   - Laptop: 992px - 1199px
   - Tablet: 768px - 991px
   - Mobile: 576px - 767px
   - Small Mobile: 320px - 575px
   ============================================ */

/* ============================================
   1. Large Desktop (1200px and up)
   ============================================ */
@media (min-width: 1200px) {
    .container {
        max-width: 1300px;
    }

    .hero-title {
        font-size: 4rem;
    }
}

/* ============================================
   2. Laptop and Small Desktop (992px - 1199px)
   ============================================ */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
        padding: 0 30px;
    }

    /* Typography */
    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }
    h3 { font-size: 1.625rem; }

    /* Hero Section */
    .hero {
        padding: 80px 0;
    }

    .hero-content {
        gap: 50px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-desc {
        font-size: 1.0625rem;
    }

    .hero-stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 2.25rem;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .service-card.featured {
        transform: scale(1.02);
    }

    /* Process Timeline */
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .process-timeline::before {
        display: none;
    }

    /* Testimonials */
    .testimonials-slider {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    /* Certifications */
    .certifications-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .cert-item img {
        height: 70px;
    }

    /* Footer */
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
        gap: 35px;
    }
}

/* ============================================
   3. Tablet (768px - 991px)
   ============================================ */
@media (max-width: 991px) {
    .container {
        max-width: 720px;
        padding: 0 25px;
    }

    /* Typography */
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }

    /* Header and Navigation */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        max-width: 85vw;
        height: 100vh;
        background-color: var(--white);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        padding: 80px 30px 30px;
        overflow-y: auto;
        z-index: 1001;
    }

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

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        width: 100%;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        padding: 0.5rem 0;
        display: block;
        width: 100%;
    }

    .nav-link.active::after {
        bottom: 0;
        left: 0;
        width: 3px;
        height: 100%;
        right: auto;
    }

    /* Dropdown Menu in Mobile */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--gray-100);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        display: none;
    }

    .dropdown.active .dropdown-menu {
        max-height: 500px;
        display: block;
    }

    .dropdown-menu a {
        padding: 0.625rem 1rem;
    }

    /* Language Switcher in Mobile Nav */
    .nav-actions .language-switcher {
        margin-top: 20px;
    }

    /* Phone Button - Hide in Tablet */
    .phone-btn {
        display: none;
    }

    /* Mobile Menu Button */
    .mobile-menu-btn {
        display: flex;
        order: 3;
    }

    .nav-actions {
        order: 2;
    }

    /* Mobile Menu Overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 1000;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Hero Section */
    .hero {
        padding: 60px 0;
        min-height: 500px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-badge {
        align-self: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-desc {
        font-size: 1rem;
    }

    .hero-btns {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image {
        order: -1;
        margin-bottom: 20px;
    }

    .hero-badge-float {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 0.875rem;
    }

    /* Sections */
    section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-desc {
        font-size: 1rem;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card.featured {
        transform: scale(1);
    }

    .service-card.featured:hover {
        transform: translateY(-10px);
    }

    /* Why Us Section */
    .why-us-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .why-us-content {
        order: 2;
        text-align: center;
    }

    .why-us-image {
        order: 1;
    }

    .features-list {
        margin: 30px 0;
    }

    .feature-item {
        text-align: left;
    }

    /* Process Timeline */
    .process-timeline {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* Testimonials */
    .testimonials-slider {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* Certifications */
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .cert-item {
        padding: 25px;
    }

    .cert-item img {
        height: 65px;
    }

    /* CTA Section */
    .cta-section {
        padding: 80px 0;
    }

    .cta-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .cta-content h2 {
        font-size: 2rem;
    }

    .cta-content p {
        font-size: 1.125rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .cta-image {
        display: none;
    }

    /* Footer */
    .footer {
        padding: 50px 0 20px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .social-links {
        justify-content: center;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-info {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-bottom-links {
        justify-content: center;
    }
}

/* ============================================
   4. Mobile (576px - 767px)
   ============================================ */
@media (max-width: 767px) {
    .container {
        padding: 0 20px;
    }

    /* Typography */
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.875rem; }
    h3 { font-size: 1.375rem; }
    h4 { font-size: 1.25rem; }
    h5 { font-size: 1.125rem; }

    /* Buttons */
    .btn {
        padding: 11px 24px;
        font-size: 15px;
    }

    .btn-lg {
        padding: 14px 30px;
        font-size: 16px;
    }

    .btn-sm {
        padding: 8px 18px;
        font-size: 13px;
    }

    /* Header */
    .navbar {
        padding: 0.875rem 0;
    }

    .logo-text {
        font-size: 1.375rem;
    }

    .logo-sub {
        font-size: 0.688rem;
    }

    .logo-img {
        height: 42px;
    }

    .nav-menu {
        width: 280px;
        padding: 70px 25px 25px;
    }

    .cta-btn {
        padding: 0.625rem 1.25rem;
        font-size: 13px;
    }

    /* Hero Section */
    .hero {
        padding: 50px 0 40px;
        min-height: 450px;
    }

    .hero-title {
        font-size: 2.125rem;
        margin-bottom: 16px;
    }

    .hero-badge {
        font-size: 13px;
        padding: 7px 18px;
        margin-bottom: 16px;
    }

    .hero-desc {
        font-size: 0.9375rem;
        margin-bottom: 25px;
    }

    .hero-btns {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 35px;
        width: 100%;
    }

    .hero-btns .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 25px;
        flex-wrap: wrap;
    }

    .stat-item {
        flex: 0 0 calc(50% - 12.5px);
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.8125rem;
    }

    .scroll-indicator {
        display: none;
    }

    /* Sections */
    section {
        padding: 50px 0;
    }

    .section-header {
        margin-bottom: 35px;
    }

    .section-badge {
        font-size: 13px;
        padding: 7px 18px;
    }

    .section-title {
        font-size: 1.875rem;
        margin-bottom: 12px;
    }

    .section-desc {
        font-size: 0.9375rem;
    }

    /* Services */
    .service-card {
        padding: 30px 20px;
    }

    .service-icon {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
        margin-bottom: 20px;
    }

    .service-card h3 {
        font-size: 1.25rem;
    }

    .badge {
        top: -12px;
        right: 20px;
        padding: 4px 16px;
        font-size: 11px;
    }

    /* Why Us */
    .feature-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .feature-icon {
        width: 55px;
        height: 55px;
        font-size: 1.375rem;
        margin: 0 auto;
    }

    .cta-box {
        padding: 25px 20px;
    }

    .cta-box p {
        font-size: 1rem;
    }

    .image-stats {
        bottom: 20px;
        left: 20px;
    }

    .stat-card {
        padding: 15px 20px;
        font-size: 0.875rem;
    }

    .stat-card i {
        font-size: 1.5rem;
    }

    /* Process */
    .process-number {
        width: 60px;
        height: 60px;
        font-size: 1.375rem;
        margin-bottom: 20px;
    }

    .process-content h3 {
        font-size: 1.125rem;
    }

    .process-content p {
        font-size: 0.875rem;
    }

    /* Testimonials */
    .testimonial-card {
        padding: 25px 20px;
    }

    .testimonial-text {
        font-size: 0.9375rem;
        margin-bottom: 20px;
    }

    .testimonial-author img {
        width: 45px;
        height: 45px;
    }

    .testimonial-author h4 {
        font-size: 0.9375rem;
    }

    .testimonial-author span {
        font-size: 0.8125rem;
    }

    /* Certifications */
    .certifications-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .cert-item {
        padding: 20px;
    }

    .cert-item img {
        height: 60px;
    }

    .certification-card {
        padding: 25px 20px;
    }

    .certification-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

    /* FAQ */
    .faq-question {
        font-size: 1rem;
        padding: 16px 20px;
    }

    .faq-question i {
        font-size: 1.125rem;
    }

    .faq-answer {
        padding: 0 20px 16px;
    }

    .faq-answer p {
        font-size: 0.9375rem;
    }

    /* CTA Section */
    .cta-section {
        padding: 60px 0;
    }

    .cta-content h2 {
        font-size: 1.875rem;
        margin-bottom: 16px;
    }

    .cta-content p {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    /* Forms */
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 11px 18px;
        font-size: 15px;
    }

    /* Modal */
    .modal {
        padding: 15px;
    }

    .modal-content {
        margin: 30px auto;
        max-width: 100%;
    }

    .modal-header {
        padding: 16px 20px;
    }

    .modal-header h3 {
        font-size: 1.25rem;
    }

    .modal-close {
        font-size: 1.75rem;
    }

    .modal-body,
    .consultation-form {
        padding: 20px;
    }

    /* Language Switcher Mobile */
    .lang-current {
        padding: 7px 11px;
        font-size: 13px;
    }

    .lang-flag {
        width: 18px;
        height: 14px;
    }

    .lang-option {
        padding: 0.625rem 0.875rem;
        font-size: 13px;
    }

    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-col h3 {
        font-size: 1.125rem;
        margin-bottom: 16px;
    }

    .footer-bottom p,
    .footer-bottom-links a {
        font-size: 0.8125rem;
    }

    .footer-bottom-links {
        flex-direction: column;
        gap: 15px;
    }

    /* WhatsApp Button */
    .whatsapp-btn {
        width: 55px;
        height: 55px;
        font-size: 26px;
        bottom: 25px;
        right: 25px;
    }
}

/* ============================================
   5. Small Mobile (320px - 575px)
   ============================================ */
@media (max-width: 575px) {
    .container {
        padding: 0 16px;
    }

    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.625rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }

    /* Buttons */
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .btn-lg {
        padding: 12px 26px;
        font-size: 15px;
    }

    .btn-sm {
        padding: 7px 16px;
        font-size: 12px;
    }

    /* Header */
    .logo-text {
        font-size: 1.25rem;
    }

    .logo-sub {
        font-size: 0.625rem;
    }

    .logo-img {
        height: 38px;
    }

    .nav-menu {
        width: 260px;
        padding: 60px 20px 20px;
    }

    .cta-btn {
        padding: 0.5rem 1rem;
        font-size: 12px;
    }

    /* Hero Section */
    .hero {
        padding: 40px 0 35px;
    }

    .hero-title {
        font-size: 1.875rem;
        line-height: 1.15;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 16px;
    }

    .hero-desc {
        font-size: 0.875rem;
        margin-bottom: 20px;
    }

    .hero-btns {
        gap: 12px;
        margin-bottom: 30px;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .hero-badge-float {
        bottom: 15px;
        right: 15px;
        padding: 10px 16px;
        font-size: 0.8125rem;
        gap: 8px;
    }

    .hero-badge-float i {
        font-size: 1.125rem;
    }

    /* Sections */
    section {
        padding: 40px 0;
    }

    .section-header {
        margin-bottom: 30px;
    }

    .section-badge {
        font-size: 12px;
        padding: 6px 16px;
        margin-bottom: 12px;
    }

    .section-title {
        font-size: 1.625rem;
        margin-bottom: 10px;
    }

    .section-desc {
        font-size: 0.875rem;
    }

    /* Services */
    .service-card {
        padding: 25px 18px;
    }

    .service-icon {
        width: 65px;
        height: 65px;
        font-size: 1.625rem;
        margin-bottom: 18px;
    }

    .service-card h3 {
        font-size: 1.125rem;
        margin-bottom: 12px;
    }

    .service-card p {
        font-size: 0.875rem;
        margin-bottom: 20px;
    }

    .service-features li {
        font-size: 0.875rem;
        margin-bottom: 8px;
    }

    /* Why Us */
    .features-list {
        margin: 25px 0;
    }

    .feature-item {
        margin-bottom: 25px;
        gap: 12px;
    }

    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .feature-content h4 {
        font-size: 1.125rem;
    }

    .feature-content p {
        font-size: 0.875rem;
    }

    .cta-box {
        padding: 20px 18px;
        margin-top: 30px;
    }

    .cta-box p {
        font-size: 0.9375rem;
        margin-bottom: 16px;
    }

    /* Process */
    .process-item {
        margin-bottom: 20px;
    }

    .process-number {
        width: 55px;
        height: 55px;
        font-size: 1.25rem;
        margin-bottom: 16px;
        border-width: 2px;
    }

    .process-content h3 {
        font-size: 1.0625rem;
        margin-bottom: 8px;
    }

    .process-content p {
        font-size: 0.8125rem;
    }

    /* Testimonials */
    .testimonial-card {
        padding: 20px 18px;
    }

    .stars {
        margin-bottom: 16px;
    }

    .stars i {
        font-size: 0.9375rem;
    }

    .testimonial-text {
        font-size: 0.875rem;
        margin-bottom: 18px;
    }

    .testimonial-author {
        gap: 12px;
    }

    .testimonial-author img {
        width: 40px;
        height: 40px;
    }

    .testimonial-author h4 {
        font-size: 0.875rem;
    }

    .testimonial-author span {
        font-size: 0.75rem;
    }

    /* Certifications */
    .certification-card {
        padding: 20px 18px;
    }

    .certification-icon {
        width: 65px;
        height: 65px;
        font-size: 1.875rem;
        margin-bottom: 16px;
    }

    .certification-card h4 {
        font-size: 1rem;
    }

    .certification-card p {
        font-size: 0.8125rem;
    }

    /* FAQ */
    .faq-item {
        margin-bottom: 12px;
    }

    .faq-question {
        font-size: 0.9375rem;
        padding: 14px 18px;
    }

    .faq-question i {
        font-size: 1rem;
    }

    .faq-answer {
        padding: 0 18px 14px;
    }

    .faq-answer p {
        font-size: 0.875rem;
    }

    /* CTA Section */
    .cta-section {
        padding: 50px 0;
    }

    .cta-content h2 {
        font-size: 1.625rem;
        margin-bottom: 14px;
    }

    .cta-content p {
        font-size: 0.9375rem;
        margin-bottom: 20px;
    }

    /* Forms */
    .form-label {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 16px;
        font-size: 14px;
    }

    .form-group textarea {
        min-height: 100px;
    }

    .checkbox-label span {
        font-size: 0.8125rem;
    }

    /* Modal */
    .modal {
        padding: 10px;
    }

    .modal-content {
        margin: 20px auto;
    }

    .modal-header {
        padding: 14px 18px;
    }

    .modal-header h3 {
        font-size: 1.125rem;
    }

    .modal-close {
        font-size: 1.625rem;
    }

    .modal-body,
    .consultation-form {
        padding: 18px;
    }

    /* Language Switcher */
    .lang-current {
        padding: 6px 10px;
        font-size: 12px;
        gap: 5px;
    }

    .lang-flag {
        width: 16px;
        height: 12px;
    }

    .lang-dropdown {
        min-width: 130px;
    }

    .lang-option {
        padding: 0.5rem 0.75rem;
        font-size: 12px;
        gap: 8px;
    }

    /* Footer */
    .footer {
        padding: 35px 0 18px;
    }

    .footer-col {
        margin-bottom: 25px;
    }

    .footer-col h3 {
        font-size: 1.0625rem;
        margin-bottom: 14px;
    }

    .footer-col p,
    .footer-links a,
    .contact-info li {
        font-size: 0.875rem;
    }

    .social-links a {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }

    .footer-bottom {
        padding-top: 25px;
        gap: 16px;
    }

    .footer-bottom p,
    .footer-bottom-links a {
        font-size: 0.75rem;
    }

    .footer-bottom-links {
        gap: 12px;
    }

    /* WhatsApp Button */
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        font-size: 24px;
        bottom: 20px;
        right: 20px;
    }
}

/* ============================================
   6. Extra Small Mobile (max-width: 374px)
   ============================================ */
@media (max-width: 374px) {
    .container {
        padding: 0 14px;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .hero-title {
        font-size: 1.75rem;
    }

    .stat-number {
        font-size: 1.625rem;
    }

    .stat-label {
        font-size: 0.6875rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 9px 18px;
        font-size: 13px;
    }
}

/* ============================================
   7. Landscape Orientation (Mobile)
   ============================================ */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 40px 0;
        min-height: auto;
    }

    .hero-content {
        grid-template-columns: 1fr 1fr;
        text-align: left;
        gap: 30px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-btns {
        flex-direction: row;
        margin-bottom: 20px;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-item {
        flex: 0 0 auto;
    }

    .nav-menu {
        padding: 60px 20px 20px;
    }

    section {
        padding: 40px 0;
    }
}

/* ============================================
   8. Print Styles
   ============================================ */
@media print {
    .header,
    .nav-menu,
    .mobile-menu-btn,
    .whatsapp-btn,
    .scroll-indicator,
    .cta-section,
    .footer {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    section {
        padding: 20px 0;
        page-break-inside: avoid;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }
}

/* ============================================
   9. High DPI Displays (Retina)
   ============================================ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img,
    .hero-image img,
    .testimonial-author img,
    .certification-card img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* ============================================
   END OF RESPONSIVE STYLESHEET
   ============================================ */