/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.6s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(240, 192, 48, 0.1);
    border-radius: 50%;
    border-top-color: var(--yellow);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

:root {
    --yellow: #f0c030;
    --yellow-dark: #c8a020;
    --bg: #141414;
    --bg2: #1c1c1c;
    --card: #222222;
    --card2: #2a2a2a;
    --white: #ffffff;
    --gray: #aaaaaa;
    --border: rgba(240,192,48,0.25);
    --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(14,14,14,0.97);
    backdrop-filter: blur(8px);
}

.nav-line {
    height: 1px;
    background: var(--border);
    display: none;
}

.nav-yellow-line {
    height: 2px;
    background: var(--yellow);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* LOGO */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-badge {
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-od {
    font-family: 'Montserrat', sans-serif;
    font-size: 15px;
    font-weight: 800;
    color: var(--yellow);
    z-index: 2;
    letter-spacing: -1px;
}

.logo-od span { color: var(--yellow); }

.logo-ring {
    position: absolute;
    inset: 0;
    border: 2px solid var(--yellow);
    border-radius: 50%;
    opacity: 0.7;
}

.logo-ring::before {
    content: '';
    position: absolute;
    inset: 3px;
    border: 1px solid var(--yellow);
    border-radius: 50%;
    opacity: 0.4;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
    line-height: 1.1;
}

.logo-sub {
    font-size: 10px;
    color: var(--yellow);
    letter-spacing: 2px;
    font-weight: 600;
}

/* NAV LINKS */
.nav-links {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    transition: color var(--transition);
    position: relative;
    padding-bottom: 4px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: var(--yellow);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    filter: brightness(0.4);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(
        to bottom,
        rgba(14,14,14,0.5) 0%,
        rgba(14,14,14,0.3) 50%,
        rgba(14,14,14,0.8) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-top: 15vh; /* İçeriği aşağıya kaydırmak için eklendi */
}

/* Hero big logo */
.hero-logo-big {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 8px;
}

.hero-badge {
    position: relative;
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-od {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--yellow);
    z-index: 2;
}

.hero-od span { color: var(--yellow); }

.hero-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--yellow);
    border-radius: 50%;
}

.hero-ring::before {
    content: '';
    position: absolute;
    inset: 5px;
    border: 1.5px solid var(--yellow);
    border-radius: 50%;
    opacity: 0.5;
}

.hero-ring::after {
    content: '';
    position: absolute;
    inset: -8px;
    border: 1px solid rgba(240,192,48,0.3);
    border-radius: 50%;
}

.hero-brand {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.hero-brand-main {
    font-family: 'Montserrat', sans-serif;
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 3px;
    line-height: 1;
}

.hero-brand-sub {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    color: var(--yellow);
    letter-spacing: 4px;
    font-weight: 600;
    margin-top: 4px;
}

.hero-slogan {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(18px, 3vw, 28px);
    font-weight: 700;
    color: var(--yellow);
    letter-spacing: 2px;
    text-align: center;
    line-height: 1.4;
}

.hero-arrow {
    margin-top: 16px;
    animation: bounce 2s infinite;
}

.hero-arrow a {
    color: var(--yellow);
    font-size: 28px;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.hero-arrow a:hover { opacity: 1; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ===== SECTIONS ===== */
.section {
    padding: 100px 0;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(28px, 4vw, 46px);
    font-weight: 800;
    color: var(--yellow);
    text-align: center;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.section-desc {
    text-align: center;
    color: var(--gray);
    font-size: 16px;
    max-width: 700px;
    margin: 0 auto 64px;
    line-height: 1.8;
}

/* ===== STATS ===== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.stat-item {
    background: var(--card);
    border-radius: 16px;
    padding: 32px 16px;
    text-align: center;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: var(--yellow);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.stat-item.counted::before {
    transform: scaleX(1);
}

.stat-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 48px;
    font-weight: 800;
    color: var(--yellow);
    line-height: 1;
    display: inline-block;
}

.stat-plus {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--yellow);
    vertical-align: top;
    margin-top: 6px;
    display: inline-block;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-top: 10px;
    letter-spacing: 1px;
    font-weight: 500;
}

/* ===== ABOUT CARDS ===== */
.about-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 16px;
}

.about-card {
    background: var(--card);
    border-radius: 16px;
    padding: 40px 24px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform var(--transition), border-color var(--transition);
    cursor: default;
}

.about-card:hover {
    transform: translateY(-6px);
    border-color: var(--border);
}

.about-icon {
    font-size: 48px;
    color: var(--yellow);
    margin-bottom: 20px;
}

.about-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 15px;
    font-weight: 800;
    color: var(--yellow);
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.about-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== PRODUCTS ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.06);
    transition: transform var(--transition), border-color var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--border);
}

.product-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--card2);
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 800;
    color: var(--yellow);
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.product-info p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 18px;
}

.btn-detail {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--yellow);
    color: #111;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.btn-detail:hover {
    background: var(--yellow-dark);
    transform: translateY(-1px);
}

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 40px;
    align-items: start;
}

.contact-left {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    background: var(--card);
    border-radius: 12px;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 15px;
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.05);
    transition: border-color var(--transition);
}

.contact-card:hover {
    border-color: var(--border);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(240,192,48,0.15);
    color: var(--yellow);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.contact-right {
    background: var(--card);
    border-radius: 16px;
    padding: 36px;
    border: 1px solid var(--border);
}

.contact-right form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-right input,
.contact-right textarea {
    background: var(--card2);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 14px 18px;
    color: var(--white);
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color var(--transition);
    width: 100%;
}

.contact-right input::placeholder,
.contact-right textarea::placeholder {
    color: rgba(255,255,255,0.3);
}

.contact-right input:focus,
.contact-right textarea:focus {
    border-color: var(--yellow);
}

.contact-right textarea {
    resize: vertical;
}

.btn-send {
    background: var(--yellow);
    color: #111;
    font-family: 'Montserrat', sans-serif;
    font-size: 15px;
    font-weight: 700;
    padding: 14px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    letter-spacing: 1px;
    transition: background var(--transition);
    width: 100%;
}

.btn-send:hover {
    background: var(--yellow-dark);
}

.form-success {
    display: none;
    align-items: center;
    gap: 8px;
    background: rgba(240,192,48,0.1);
    border: 1px solid var(--yellow);
    color: var(--yellow);
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 14px;
}

.form-success.show { display: flex; }

/* ===== MAP ===== */
.map-wrapper {
    margin-top: 40px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg2);
    padding-top: 0;
}

.footer-line {
    height: 2px;
    background: var(--yellow);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 48px;
    padding: 60px 24px 48px;
}

.footer-heading {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 800;
    color: var(--yellow);
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.footer-heading-line {
    width: 40px;
    height: 2px;
    background: var(--yellow);
    margin-bottom: 20px;
}

.footer-col p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-socials {
    display: flex;
    gap: 10px;
}

.footer-socials a {
    width: 38px;
    height: 38px;
    background: var(--card);
    color: var(--yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    border: 1px solid var(--border);
    transition: background var(--transition), transform var(--transition);
}

.footer-socials a:hover {
    background: var(--yellow);
    color: #111;
    transform: translateY(-2px);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--yellow);
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 10px;
    line-height: 1.5;
}

.footer-contact-list i {
    color: var(--yellow);
    font-size: 13px;
    margin-top: 2px;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.07);
    padding: 20px 24px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

.footer-bottom a {
    color: var(--yellow);
    font-weight: 600;
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 46px;
    height: 46px;
    background: var(--yellow);
    color: #111;
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px);
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
    box-shadow: 0 4px 16px rgba(240,192,48,0.35);
}

.scroll-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--yellow-dark);
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--card);
    border-radius: 20px;
    width: 100%;
    max-width: 780px;
    max-height: 88vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border);
    transform: translateY(30px);
    transition: transform var(--transition);
    scrollbar-width: thin;
    scrollbar-color: var(--yellow) var(--card2);
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal::-webkit-scrollbar { width: 6px; }
.modal::-webkit-scrollbar-track { background: var(--card2); }
.modal::-webkit-scrollbar-thumb { background: var(--yellow); border-radius: 3px; }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: rgba(240,192,48,0.15);
    color: var(--yellow);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--yellow);
    color: #111;
}

.modal-body {
    padding: 40px;
}

.modal-body h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--yellow);
    text-align: center;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.modal-body .modal-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 36px;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.modal-section {
    margin-bottom: 32px;
}

.modal-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 800;
    color: var(--yellow);
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.modal-section-title i {
    font-size: 18px;
}

.modal-body .desc-text {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.8;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.tech-item {
    background: var(--card2);
    border-radius: 10px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.06);
}

.tech-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 700;
    color: var(--yellow);
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.tech-value {
    font-size: 13px;
    color: var(--white);
    line-height: 1.4;
}

.advantages-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.advantages-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--gray);
}

.advantages-list li::before {
    content: '✓';
    color: var(--yellow);
    font-weight: 700;
    font-size: 15px;
}

/* ===== ANIMATIONS ===== */
.fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .about-cards { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }

    .nav-links {
        position: fixed;
        top: 72px; left: 0; right: 0;
        background: rgba(14,14,14,0.98);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        border-bottom: 2px solid var(--yellow);
    }

    .nav-links.open { max-height: 300px; }

    .nav-links .nav-link {
        padding: 16px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        display: block;
    }

    .nav-links .nav-link::after { display: none; }

    .hero-logo-big { flex-direction: column; gap: 12px; }
    .hero-brand { text-align: center; }

    .about-cards { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
    .modal-body { padding: 24px; }
}

@media (max-width: 480px) {
    .tech-grid { grid-template-columns: 1fr; }
    .hero-brand-main { font-size: 26px; }
}

/* ===== CALCULATOR ===== */
.calc-wrapper {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 32px;
    align-items: start;
    margin-top: 40px;
}

.calc-card {
    background: var(--card);
    border-radius: 20px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.calc-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--card2);
    border-bottom: 1px solid var(--border);
}

.calc-tab {
    padding: 20px 10px;
    background: none;
    border: none;
    color: var(--gray);
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    border-right: 1px solid rgba(255,255,255,0.05);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-tab:last-child { border-right: none; }

.calc-tab i { font-size: 20px; }

.calc-tab.active {
    background: var(--card);
    color: var(--yellow);
    border-bottom: 2px solid var(--yellow);
}

.calc-content {
    padding: 40px;
}

.calc-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.input-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--yellow);
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    background: var(--card2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 14px 18px;
    color: var(--white);
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: all var(--transition);
}

.input-group input:focus {
    border-color: var(--yellow);
    background: rgba(240,192,48,0.05);
}

.calc-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
    gap: 24px;
}

.btn-calc {
    background: var(--yellow);
    color: #111;
    border: none;
    padding: 16px 48px;
    border-radius: 12px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 15px;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 1.5px;
    box-shadow: 0 4px 15px rgba(240,192,48,0.2);
}

.btn-calc:hover {
    background: var(--yellow-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(240,192,48,0.3);
}

.result-area {
    text-align: right;
}

.result-label {
    font-size: 12px;
    color: var(--gray);
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.result-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 36px;
    font-weight: 800;
    color: var(--yellow);
    line-height: 1;
}

.result-value .unit {
    font-size: 18px;
    color: var(--gray);
    margin-left: 6px;
}

.calc-info {
    background: var(--card);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255,255,255,0.05);
}

.calc-info h4 {
    color: var(--yellow);
    font-family: 'Montserrat', sans-serif;
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.calc-info p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 30px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-list li {
    display: flex;
    gap: 14px;
    font-size: 13.5px;
    color: var(--gray);
    line-height: 1.5;
}

.info-list i {
    color: var(--yellow);
    margin-top: 4px;
    font-size: 16px;
}

@media (max-width: 992px) {
    .calc-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .calc-inputs { grid-template-columns: 1fr; }
    .calc-footer { flex-direction: column; align-items: stretch; text-align: center; }
    .result-area { text-align: center; margin-top: 10px; }
    .calc-tabs { grid-template-columns: repeat(2, 1fr); }
    .calc-content { padding: 24px; }
    .btn-calc { padding: 16px; }
}

/* ===== CONTENT PROTECTION ===== */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}