/* 4Sofit Web — responsive design tokens & mobile-first foundations (v3)
 *
 * Breakpoints (reference — use literal px in @media):
 *   Mobile   0 – 767px
 *   Tablet   768 – 1023px
 *   Laptop   1024 – 1439px
 *   Desktop  1440px+
 * Shell drawer (sidebar): ≤992px — see --shell-drawer-max in design-tokens.css
 */

:root {
    /* Layout containers */
    --container-padding: 16px;
    --container-sm: 720px;
    --container-md: 1140px;
    --container-max: 1440px;
    --layout-max: min(100%, var(--container-max));

    /* Touch & accessibility */
    --touch-min: 44px;

    /* Fluid typography */
    --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
    --text-sm: clamp(0.875rem, 0.84rem + 0.2vw, 0.9375rem);
    --text-base: clamp(1rem, 0.96rem + 0.25vw, 1.0625rem);
    --text-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
    --text-2xl: clamp(1.375rem, 1.2rem + 0.65vw, 1.75rem);
    --text-3xl: clamp(1.625rem, 1.35rem + 0.9vw, 2.125rem);
}

/* Flexible media */
img,
video {
    max-width: 100%;
    height: auto;
}

/* Base readable text — mobile-first */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-size: var(--text-base);
    line-height: 1.55;
}

h1 { font-size: var(--text-3xl); line-height: 1.25; margin: 0 0 0.5em; }
h2 { font-size: var(--text-2xl); line-height: 1.3; margin: 0 0 0.45em; }
h3 { font-size: var(--text-xl); line-height: 1.35; margin: 0 0 0.4em; }
h4 { font-size: var(--text-lg); line-height: 1.4; margin: 0 0 0.35em; }

.page-header__title,
.topbar-title,
.page-title {
    font-size: var(--text-lg);
}

.page-header__subtitle {
    font-size: var(--text-sm);
}

/* iOS: prevent zoom on focus when font < 16px */
@media (max-width: 767px) {
    input,
    select,
    textarea,
    .input,
    .search-select__input {
        font-size: 16px !important;
    }
}

/* Responsive container utility */
.responsive-container {
    width: 100%;
    padding-inline: var(--container-padding);
    margin-inline: auto;
}

@media (min-width: 768px) {
    .responsive-container {
        max-width: var(--container-sm);
        padding-inline: 20px;
    }
}

@media (min-width: 1024px) {
    .responsive-container {
        max-width: var(--container-md);
        padding-inline: 24px;
    }
}

@media (min-width: 1440px) {
    .responsive-container {
        max-width: var(--container-max);
    }
}

/* Main content width cap on large screens */
@media (min-width: 1024px) {
    .page-content {
        width: 100%;
        max-width: var(--layout-max);
        margin-inline: auto;
    }
}

/* Minimum touch target helper */
.touch-target {
    min-height: var(--touch-min);
    min-width: var(--touch-min);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* Card grids — auto-fit pattern */
.responsive-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: clamp(12px, 2vw, 20px);
}

@media (min-width: 768px) {
    .responsive-card-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Login — mobile-first centering */
.login-shell {
    width: 100%;
    min-height: 100dvh;
    padding: var(--container-padding);
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .login-shell {
        padding: 24px;
    }
}

@media (min-width: 1024px) {
    .login-card,
    .login-card--unified {
        max-width: var(--container-sm);
        margin-inline: auto;
    }
}