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

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--sd-bg-primary);
    color: var(--sd-text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

@media (min-width: 640px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (min-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

.sd-heading {
    color: var(--sd-lime);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.sd-heading-white {
    color: var(--sd-text-primary);
}

.sd-text {
    color: var(--sd-text-primary);
}

.sd-text-secondary {
    color: var(--sd-text-secondary);
}

.sd-text-muted {
    color: var(--sd-text-muted);
}

.sd-text-lime {
    color: var(--sd-lime);
}

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

    -webkit-touch-callout: none;
}

.sd-link {
    color: var(--sd-text-secondary);
    transition: color var(--sd-transition);
}

.sd-link:hover,
.sd-link:active {
    color: var(--sd-lime);
}

.sd-container {
    width: 100%;
    max-width: 80rem;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) {
    .sd-container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .sd-container {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

.sd-section {
    background-color: var(--sd-bg-primary);
}

.sd-section-alt {
    background-color: var(--sd-bg-secondary);
}

.sd-card {
    background-color: var(--sd-bg-card);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-lg);
    transition: border-color var(--sd-transition), box-shadow var(--sd-transition);
}

@media (hover: hover) {
    .sd-card:hover {
        border-color: var(--sd-border-active);
        box-shadow: 0 0 24px var(--sd-purple-glow);
    }
}

.sd-card:active {
    border-color: var(--sd-border-active);
}

.sd-card-elevated {
    background-color: var(--sd-bg-elevated);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-lg);
}

.sd-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;

    min-height: 2.75rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--sd-radius-md);
    transition: all var(--sd-transition);
    cursor: pointer;
    border: none;

    user-select: none;
    -webkit-user-select: none;
}

@media (min-width: 640px) {
    .sd-btn {
        min-height: 2.5rem;
        font-size: 0.875rem;
    }
}

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

.sd-btn-cta:hover,
.sd-btn-cta:active {
    background-color: var(--sd-cta-hover);
}

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

.sd-btn-purple:hover,
.sd-btn-purple:active {
    background-color: var(--sd-purple-light);
}

.sd-btn-outline {
    background: transparent;
    border: 1px solid var(--sd-border-active);
    color: var(--sd-purple-light);
}

.sd-btn-outline:hover,
.sd-btn-outline:active {
    background-color: var(--sd-purple);
    color: white;
}

.sd-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 500;
    border-radius: var(--sd-radius-full);
    white-space: nowrap;
}

@media (min-width: 640px) {
    .sd-badge {
        padding: 0.25rem 0.75rem;
        font-size: 0.75rem;
    }
}

.sd-badge-purple {
    background: linear-gradient(135deg, var(--sd-purple) 0%, #5346c7 100%);
    color: white;
}

.sd-badge-lime {
    background-color: rgba(180, 240, 0, 0.15);
    color: var(--sd-lime);
}

.sd-badge-success {
    background-color: rgba(0, 208, 132, 0.15);
    color: var(--sd-success);
}

.sd-badge-warning {
    background-color: rgba(252, 185, 0, 0.15);
    color: var(--sd-warning);
}

.sd-input {
    width: 100%;
    min-height: 2.75rem;
    background-color: var(--sd-bg-card);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-full);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--sd-text-primary);
    transition: border-color var(--sd-transition), box-shadow var(--sd-transition);
}

@media (min-width: 640px) {
    .sd-input {
        padding: 0.75rem 1.5rem;
    }
}

.sd-input::placeholder {
    color: var(--sd-text-muted);
}

.sd-input:focus {
    outline: none;
    border-color: var(--sd-border-active);
    box-shadow: 0 0 0 3px var(--sd-purple-glow);
}

.sd-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.875rem;
}

.sd-table th {
    background-color: var(--sd-bg-secondary);
    color: var(--sd-text-muted);
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem;
    text-align: left;
    white-space: nowrap;
}

@media (min-width: 640px) {
    .sd-table th {
        font-size: 0.75rem;
        padding: 0.875rem 1rem;
    }
}

.sd-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--sd-border);
    vertical-align: middle;
}

@media (min-width: 640px) {
    .sd-table td {
        padding: 1rem;
    }
}

@media (hover: hover) {
    .sd-table tr:hover td {
        background-color: var(--sd-bg-elevated);
    }
}

.sd-divider {
    border: none;
    height: 1px;
    background-color: var(--sd-border);
}

@media (hover: hover) {
    .sd-glow-purple {
        box-shadow: 0 0 40px var(--sd-purple-glow);
    }

    .sd-glow-lime {
        box-shadow: 0 0 40px rgba(180, 240, 0, 0.2);
    }
}

@supports (padding: env(safe-area-inset-bottom)) {
    .sd-safe-bottom {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

:focus-visible {
    outline: 2px solid var(--sd-purple);
    outline-offset: 2px;
}

::selection {
    background-color: var(--sd-purple);
    color: white;
}

.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;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}