/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Adjust based on your header height */
}

body {
    font-family: var(--font-main);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headers);
    color: var(--color-bg-dark);
    line-height: 1.2;
}

h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-md);
}

a {
    color: inherit;
    text-decoration: none;
    transition: all var(--transition-normal);
}

/* Smooth transitions for all interactive elements */
a, button, input, .btn, .card, .feature-card, .offer-card, .tool-card {
    transition: all var(--transition-normal);
}

/* Hover effects */
a:hover, button:hover {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Button animations */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    border: none;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
    transition-duration: 150ms;
}

/* Card animations */
.card, .feature-card, .offer-card, .tool-card {
    transition: transform var(--transition-normal),
                box-shadow var(--transition-normal);
}

.card:hover, .feature-card:hover, .offer-card:hover, .tool-card:hover {
    transform: translateY(-4px);
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Adjust based on your header height */
}

/* Smooth fade for modal/overlay transitions */
.modal, .overlay {
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal),
                visibility var(--transition-normal);
}

.modal.active, .overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

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

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

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

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-lg);
}

/* Forms */
.input {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: var(--text-md);
    transition: var(--transition-fast);
}

.input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(128, 43, 177, 0.2);
    outline: none;
}

/* Sections */
section {
    padding: var(--space-xl) 0;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-md);
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--space-sm);
    }

    section {
        padding: var(--space-lg) 0;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 12px;
    }

    .btn {
        width: 100%;
    }
}

.feature-icon,
.tool-icon,
.payment-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--color-bg-light);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon,
.tool-card:hover .tool-icon {
    transform: scale(1.1);
    background: var(--color-primary);
    color: var(--color-white);
}

/* Анимация для иконок */
@keyframes iconPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.feature-icon svg,
.tool-icon svg,
.payment-icon svg {
    transition: var(--transition-normal);
}