/* --- Utility Classes --- */
.btn {
    display: inline-block;
    padding: 14px 35px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: transform 0.4s ease;
    transform: skewX(-20deg);
    z-index: -1;
}

.btn:hover::before {
    transform: translateX(200%) skewX(-20deg);
}

.btn-primary {
    background-color: var(--accent-blue);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(59, 128, 191, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 128, 191, 0.5);
}

.btn-outline {
    border-color: var(--text-white);
    color: var(--text-white);
}

.btn-outline:hover {
    background-color: var(--text-white);
    color: var(--bg-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 80px;
    height: 5px;
    background-color: var(--accent-blue);
}

.section-subtitle {
    color: var(--accent-blue);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 15px;
    display: block;
    letter-spacing: 2px;
    font-size: 0.9rem;
}

/* --- Navigation --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(36, 38, 41, 0.9);
    backdrop-filter: blur(15px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s ease;
}

header.scrolled {
    padding: 15px 0;
    background-color: rgba(26, 28, 30, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-blue);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.bar {
    width: 30px;
    height: 3px;
    background-color: var(--text-white);
    transition: var(--transition);
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background-color: var(--accent-blue);
    width: 0%;
    z-index: 1001;
    transition: width 0.1s;
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--accent-blue);
    color: var(--text-white);
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 900;
    border: none;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    font-size: 1.2rem;
}

#back-to-top:hover {
    transform: translateY(-5px);
    background-color: var(--accent-hover);
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* Scroll Down Icon */
.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    pointer-events: auto;
    animation: bounce 2s infinite;
    transition: var(--transition);
}

.scroll-down:hover {
    transform: translateX(-50%) translateY(-5px);
}

.scroll-down-icon {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-white);
    border-radius: 25px;
    position: relative;
    opacity: 0.8;
    transition: var(--transition);
}

.scroll-down-icon::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--text-white);
    border-radius: 50%;
    animation: scrollDown 2s infinite;
}

.scroll-down-text {
    color: var(--text-white);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.8;
    font-family: var(--font-heading);
}

.scroll-down:hover .scroll-down-icon {
    border-color: var(--accent-blue);
    opacity: 1;
    box-shadow: 0 0 15px rgba(59, 128, 191, 0.5);
}

.scroll-down:hover .scroll-down-icon::before {
    background-color: var(--accent-blue);
}

.scroll-down:hover .scroll-down-text {
    color: var(--accent-blue);
    opacity: 1;
}

/* Cards */
.service-card {
    background-color: var(--bg-dark);
    padding: 40px 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(59, 128, 191, 0.1), transparent);
    transform: translateX(-100%);
    transition: 0.6s;
    z-index: -1;
}

.service-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before {
    transform: translateX(100%);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent-blue);
    margin-bottom: 25px;
    transition: transform 0.3s ease;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    max-height: 100%;
    width: auto;
    object-fit: contain;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    text-align: center;
}

.service-card p {
    color: var(--text-gray);
    font-size: 1rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 20px;
    border-left: 3px solid var(--accent-blue);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(5px);
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--accent-blue);
    margin-bottom: 5px;
    line-height: 1;
}

.stat-item p {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-white);
}

.feature-item {
    padding: 30px;
    background: var(--bg-dark);
    border-radius: 5px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-icon {
    margin-bottom: 20px;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
}

.feature-icon img {
    max-height: 100%;
    width: auto;
    object-fit: contain;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.feature-item h4 {
    margin-bottom: 15px;
    font-size: 1.3rem;
    color: var(--text-white);
}

.feature-item p {
    color: var(--text-gray);
    font-size: 1rem;
}

/* Forms */
.contact-form {
    background-color: var(--bg-darker);
    padding: 50px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-gray);
}

.form-control {
    width: 100%;
    padding: 15px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    font-family: var(--font-body);
    transition: var(--transition);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 128, 191, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}