/* Tasiyalimabi Design System v1.0 */
:root {
    /* Brand */
    --tas-color-navy-950: #071A33;
    --tas-color-navy-900: #0B1F3A;
    --tas-color-navy-800: #102848;
    --tas-color-blue-700: #153A6B;
    --tas-color-blue-600: #1D4F91;
    --tas-color-orange-500: #F5A623;

    /* Surfaces */
    --tas-color-surface: #FFFFFF;
    --tas-color-background: #F7F9FC;
    --tas-color-background-muted: #F1F5F9;
    --tas-color-border: #E7ECF3;
    --tas-color-border-strong: #D9E1EB;

    /* Typography */
    --tas-color-text: #12233D;
    --tas-color-text-muted: #64748B;
    --tas-color-text-subtle: #94A3B8;
    --tas-color-text-inverse: #FFFFFF;
    --tas-color-text-inverse-muted: rgba(255, 255, 255, 0.72);

    /* Dark surfaces */
    --tas-color-dark-border: rgba(255, 255, 255, 0.08);
    --tas-color-dark-border-hover: rgba(255, 255, 255, 0.14);
    --tas-color-dark-surface: rgba(255, 255, 255, 0.04);
    --tas-color-dark-surface-hover: rgba(255, 255, 255, 0.07);

    /* Spacing */
    --tas-space-1: 0.5rem;
    --tas-space-2: 1rem;
    --tas-space-3: 1.5rem;
    --tas-space-4: 2rem;
    --tas-space-5: 3rem;
    --tas-space-6: 4rem;
    --tas-space-7: 6rem;

    /* Container */
    --tas-container-max: 94rem;
    --tas-container-padding-desktop: 2rem;
    --tas-container-padding-tablet: 1.5rem;
    --tas-container-padding-mobile: 1.25rem;

    /* Radius */
    --tas-radius-sm: 1rem;
    --tas-radius-md: 1.25rem;
    --tas-radius-lg: 1.75rem;
    --tas-radius-pill: 999px;

    /* Shadows */
    --tas-shadow-card: 0 12px 32px rgba(5, 25, 55, 0.08);
    --tas-shadow-card-hover: 0 18px 40px rgba(5, 25, 55, 0.12);
    --tas-shadow-dark: 0 18px 48px rgba(0, 8, 24, 0.22);

    /* Typography scale */
    --tas-font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --tas-font-size-eyebrow: 0.75rem;
    --tas-font-size-caption: 0.875rem;
    --tas-font-size-body: 1rem;
    --tas-font-size-card-title: 1.25rem;
    --tas-font-size-section: clamp(2rem, 3vw, 3rem);
    --tas-font-size-hero: clamp(2.75rem, 5vw, 4rem);

    /* Font weights */
    --tas-font-weight-regular: 400;
    --tas-font-weight-medium: 500;
    --tas-font-weight-semibold: 600;
    --tas-font-weight-bold: 700;
    --tas-font-weight-extrabold: 800;

    /* Line heights */
    --tas-line-height-tight: 1.08;
    --tas-line-height-heading: 1.15;
    --tas-line-height-body: 1.65;

    /* Motion */
    --tas-duration-fast: 160ms;
    --tas-duration-base: 220ms;
    --tas-ease-standard: ease;
}

/* Reusable foundations */
.tas-container {
    box-sizing: border-box;
    width: 100%;
    max-width: var(--tas-container-max);
    margin-inline: auto;
    padding-inline: var(--tas-container-padding-desktop);
}

.tas-section {
    position: relative;
    padding-block: var(--tas-space-7);
}

.tas-section--light {
    background: var(--tas-color-background);
    color: var(--tas-color-text);
}

.tas-section--dark {
    background: var(--tas-color-navy-950);
    color: var(--tas-color-text-inverse);
}

.tas-eyebrow {
    color: var(--tas-color-orange-500);
    font-family: var(--tas-font-family-base);
    font-size: var(--tas-font-size-eyebrow);
    font-weight: var(--tas-font-weight-bold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.tas-section-title {
    margin: 0;
    color: var(--tas-color-text);
    font-family: var(--tas-font-family-base);
    font-size: var(--tas-font-size-section);
    font-weight: var(--tas-font-weight-bold);
    line-height: var(--tas-line-height-heading);
}

.tas-section-description {
    color: var(--tas-color-text-muted);
    font-family: var(--tas-font-family-base);
    font-size: var(--tas-font-size-body);
    line-height: var(--tas-line-height-body);
}

.tas-card {
    background: var(--tas-color-surface);
    border: 1px solid var(--tas-color-border);
    border-radius: var(--tas-radius-md);
    box-shadow: var(--tas-shadow-card);
    transition: transform var(--tas-duration-base) var(--tas-ease-standard), border-color var(--tas-duration-base) var(--tas-ease-standard), box-shadow var(--tas-duration-base) var(--tas-ease-standard);
}

.tas-card--dark {
    background: var(--tas-color-dark-surface);
    border-color: var(--tas-color-dark-border);
    box-shadow: var(--tas-shadow-dark);
    color: var(--tas-color-text-inverse);
}

.tas-button {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    padding: var(--tas-space-1) var(--tas-space-2);
    border: 1px solid transparent;
    border-radius: var(--tas-radius-sm);
    font-family: var(--tas-font-family-base);
    font-weight: var(--tas-font-weight-semibold);
    line-height: 1.2;
    text-decoration: none;
    transition: background-color var(--tas-duration-base) var(--tas-ease-standard), border-color var(--tas-duration-base) var(--tas-ease-standard), color var(--tas-duration-base) var(--tas-ease-standard), box-shadow var(--tas-duration-base) var(--tas-ease-standard), transform var(--tas-duration-base) var(--tas-ease-standard);
}

.tas-button--primary {
    background: var(--tas-color-orange-500);
    color: var(--tas-color-navy-950);
}

.tas-button--secondary {
    background: var(--tas-color-blue-600);
    color: var(--tas-color-text-inverse);
}

.tas-button--ghost {
    background: transparent;
    border-color: var(--tas-color-border-strong);
    color: var(--tas-color-text);
}

.tas-button:focus-visible,
.tas-card:focus-visible {
    outline: 3px solid rgba(29, 79, 145, 0.35);
    outline-offset: 3px;
}

.tas-button:disabled,
.tas-button[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.55;
}

@media (hover: hover) and (pointer: fine) {
    .tas-card:hover {
        border-color: var(--tas-color-border-strong);
        box-shadow: var(--tas-shadow-card-hover);
        transform: translateY(-4px);
    }

    .tas-card--dark:hover {
        background: var(--tas-color-dark-surface-hover);
        border-color: var(--tas-color-dark-border-hover);
        box-shadow: var(--tas-shadow-dark);
    }
}

@media (max-width: 1199px) {
    .tas-container {
        padding-inline: var(--tas-container-padding-tablet);
    }

    .tas-section {
        padding-block: var(--tas-space-6);
    }
}

@media (max-width: 767px) {
    .tas-container {
        padding-inline: var(--tas-container-padding-mobile);
    }

    .tas-section {
        padding-block: var(--tas-space-5);
    }
}

@media (prefers-reduced-motion: reduce) {
    .tas-card,
    .tas-button {
        transition-duration: 1ms;
    }
}