/* ============================================
   BASE / RESET
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-white);
    color: var(--color-black);
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* Button Styles */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background-color: var(--color-white);
    color: var(--color-black);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1.5px solid var(--color-gray-200);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    cursor: pointer;
}

.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-gray-300);
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 2000;
    transform: translateY(100px);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Visually hidden (for accessibility) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}