/* ------------------------------------------------------------
   Ollato Eduversity - Global Utility Classes
   File: assets/css/global/utilities.css

   Purpose:
   - Reusable layout classes
   - Reusable spacing classes
   - Reusable button classes
   - Reusable grid/card classes
   - Reusable form helper classes
------------------------------------------------------------ */


/* ------------------------------------------------------------
   Container
------------------------------------------------------------ */

.container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container-sm {
    max-width: var(--container-width-sm);
}

.container-lg {
    max-width: var(--container-width-lg);
}

.container-fluid {
    width: 100%;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}


/* ------------------------------------------------------------
   Section Utilities
------------------------------------------------------------ */

.section {
    padding-top: var(--section-padding-y);
    padding-bottom: var(--section-padding-y);
}

.section-sm {
    padding-top: var(--section-padding-y-sm);
    padding-bottom: var(--section-padding-y-sm);
}

.section-lg {
    padding-top: var(--section-padding-y-lg);
    padding-bottom: var(--section-padding-y-lg);
}

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

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

.section-dark {
    background-color: var(--color-dark-bg);
    color: var(--color-white);
}

.section-header {
    max-width: 780px;
    margin: 0 auto var(--space-10);
    text-align: center;
}

.section-header-left {
    max-width: 780px;
    margin: 0 0 var(--space-10);
    text-align: left;
}


/* ------------------------------------------------------------
   Display Utilities
------------------------------------------------------------ */

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-inline {
    display: inline;
}

.d-inline-block {
    display: inline-block;
}

.d-flex {
    display: flex;
}

.d-inline-flex {
    display: inline-flex;
}

.d-grid {
    display: grid;
}


/* ------------------------------------------------------------
   Flex Utilities
------------------------------------------------------------ */

.flex-row {
    flex-direction: row;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-nowrap {
    flex-wrap: nowrap;
}

.align-start {
    align-items: flex-start;
}

.align-center {
    align-items: center;
}

.align-end {
    align-items: flex-end;
}

.align-stretch {
    align-items: stretch;
}

.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.gap-1 {
    gap: var(--space-1);
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-5 {
    gap: var(--space-5);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}


/* ------------------------------------------------------------
   Grid Utilities
------------------------------------------------------------ */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--grid-gap);
}


/* ------------------------------------------------------------
   Width Utilities
------------------------------------------------------------ */

.w-100 {
    width: 100%;
}

.w-auto {
    width: auto;
}

.max-w-sm {
    max-width: 480px;
}

.max-w-md {
    max-width: 640px;
}

.max-w-lg {
    max-width: 800px;
}

.max-w-xl {
    max-width: 960px;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}


/* ------------------------------------------------------------
   Margin Utilities
------------------------------------------------------------ */

.m-0 {
    margin: 0;
}

.mt-0 {
    margin-top: 0;
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mt-10 {
    margin-top: var(--space-10);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.mb-10 {
    margin-bottom: var(--space-10);
}


/* ------------------------------------------------------------
   Padding Utilities
------------------------------------------------------------ */

.p-0 {
    padding: 0;
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

.p-8 {
    padding: var(--space-8);
}

.pt-0 {
    padding-top: 0;
}

.pt-4 {
    padding-top: var(--space-4);
}

.pt-6 {
    padding-top: var(--space-6);
}

.pt-8 {
    padding-top: var(--space-8);
}

.pb-0 {
    padding-bottom: 0;
}

.pb-4 {
    padding-bottom: var(--space-4);
}

.pb-6 {
    padding-bottom: var(--space-6);
}

.pb-8 {
    padding-bottom: var(--space-8);
}


/* ------------------------------------------------------------
   Button Utilities
------------------------------------------------------------ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border: 1px solid transparent;
    border-radius: var(--btn-radius);
    font-size: var(--btn-font-size);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    cursor: pointer;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-secondary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

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

.btn-white:hover,
.btn-white:focus {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-white);
}


/* ------------------------------------------------------------
   Card Utilities
------------------------------------------------------------ */

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

.card-body {
    padding: var(--space-6);
}

.card-hover {
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}


/* ------------------------------------------------------------
   Image Utilities
------------------------------------------------------------ */

.img-fluid {
    display: block;
    max-width: 100%;
    height: auto;
}

.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.img-rounded {
    border-radius: var(--radius-lg);
}

.img-circle {
    border-radius: 50%;
}


/* ------------------------------------------------------------
   Background Utilities
------------------------------------------------------------ */

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

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

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

.bg-secondary-light {
    background-color: var(--color-secondary-light);
}

.bg-accent {
    background-color: var(--color-accent);
}

.bg-accent-light {
    background-color: var(--color-accent-light);
}

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

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

.bg-dark {
    background-color: var(--color-dark-bg);
}


/* ------------------------------------------------------------
   Border Utilities
------------------------------------------------------------ */

.border {
    border: 1px solid var(--color-border);
}

.border-top {
    border-top: 1px solid var(--color-border);
}

.border-bottom {
    border-bottom: 1px solid var(--color-border);
}

.rounded-sm {
    border-radius: var(--radius-sm);
}

.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}


/* ------------------------------------------------------------
   Shadow Utilities
------------------------------------------------------------ */

.shadow-xs {
    box-shadow: var(--shadow-xs);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-none {
    box-shadow: none;
}


/* ------------------------------------------------------------
   Form Utilities
------------------------------------------------------------ */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
}

.form-control {
    width: 100%;
    min-height: var(--input-height);
    padding: var(--input-padding-y) var(--input-padding-x);
    border: 1px solid var(--color-input-border);
    border-radius: var(--input-radius);
    background-color: var(--color-white);
    color: var(--color-text);
    outline: none;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(31, 79, 143, 0.12);
}

textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

.form-error {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

.form-success {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.form-message-error {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    background-color: var(--color-error-light);
    color: var(--color-error);
}


/* ------------------------------------------------------------
   Visibility Utilities
------------------------------------------------------------ */

.visible {
    visibility: visible;
}

.invisible {
    visibility: hidden;
}

.overflow-hidden {
    overflow: hidden;
}

.position-relative {
    position: relative;
}

.position-absolute {
    position: absolute;
}


/* ------------------------------------------------------------
   Accessibility Utilities
------------------------------------------------------------ */

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

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-4);
    z-index: var(--z-overlay);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    background-color: var(--color-primary);
    color: var(--color-white);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
    color: var(--color-white);
}


/* ------------------------------------------------------------
   Responsive Utility Helpers
------------------------------------------------------------ */

@media (max-width: 991px) {
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .lg-d-none {
        display: none;
    }

    .lg-d-block {
        display: block;
    }
}

@media (max-width: 575px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .section,
    .section-sm,
    .section-lg {
        padding-top: var(--section-padding-y-sm);
        padding-bottom: var(--section-padding-y-sm);
    }

    .sm-d-none {
        display: none;
    }

    .sm-d-block {
        display: block;
    }

    .btn {
        width: 100%;
    }
}