/* =====================
   Buttons
   ===================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1rem;
}

/* =====================
   Header & Navigation
   ===================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 20px;
    transition: var(--transition);
}

.header.transparent {
    background: transparent;
    box-shadow: none;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.header.scrolled .logo-img {
    filter: none;
}

.header.scrolled .nav-link {
    color: var(--color-gray-600);
}

.header.scrolled .nav-link:hover {
    color: var(--color-primary);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: filter 0.3s ease;
    padding: 15px 0 15px 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    padding: 10px 20px;
    border-radius: var(--radius);
    position: relative;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.header.scrolled .nav-link:hover {
    background: var(--color-gray-100);
}

.nav-link.active {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.15);
}

.header.scrolled .nav-link.active {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.header.scrolled .nav-toggle {
    background: var(--color-gray-100);
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--color-white);
    margin: 2px 0;
    transition: var(--transition);
    border-radius: 1px;
}

.header.scrolled .nav-toggle span {
    background: var(--color-gray-800);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* =====================
   Feature Cards
   ===================== */
.feature-card {
    background: var(--color-white);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-gray-100);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.feature-icon svg {
    width: 44px;
    height: 44px;
    color: var(--color-primary);
    stroke-width: 1.5;
    transition: var(--transition);
}

.feature-card:hover .feature-icon svg {
    transform: scale(1.1);
    color: var(--color-primary-dark);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* =====================
   Product Cards
   ===================== */
.product-card {
    display: flex;
    flex-direction: column;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    height: 100%;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.product-card:hover .product-link {
    color: var(--color-primary);
}

.product-card:hover .product-link svg {
    transform: translateX(6px);
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-image {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-gray-100), var(--color-gray-50));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.product-content {
    padding: 26px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 10px;
    line-height: 1.3;
}

.product-description {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    line-height: 1.65;
    margin-bottom: 22px;
    flex-grow: 1;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    border-top: 1px solid var(--color-gray-100);
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-amount {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
}

.price-period {
    font-size: 0.8rem;
    color: var(--color-gray-400);
    font-weight: 500;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-gray-500);
    transition: var(--transition);
}

.product-link svg {
    width: 18px;
    height: 18px;
    transition: var(--transition);
}

/* =====================
   Contact Cards
   ===================== */
.contact-card {
    background: var(--color-white);
    padding: 28px 30px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid transparent;
}

.contact-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.contact-icon {
    margin-bottom: 16px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0.05));
    border-radius: var(--radius-md);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    stroke-width: 1.5;
}

.contact-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    line-height: 1.6;
}

.contact-card a {
    color: var(--color-primary);
    font-weight: 600;
}

.contact-card a:hover {
    color: var(--color-primary-dark);
}

/* =====================
   Stats
   ===================== */
.stat {
    text-align: center;
    position: relative;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
    font-weight: 500;
}