/**
 * Filename: css/components.css
 * Author: Academic Network
 * Version: 1.0.0
 * Description: Reusable UI component styles for the data submission portal
 * Last Modified: 2025-10-27
 */

/* ============================================
 * BUTTONS
 * ============================================ */

.btn {
    display: inline-block;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    font-size: var(--font-size-base);
    font-weight: var(--btn-font-weight);
    line-height: var(--line-height-normal);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--btn-border-radius);
    transition: var(--transition-colors);
    outline: none;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button variants */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

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

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

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

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

.btn-success:hover {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
}

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

.btn-danger:hover {
    background-color: var(--color-danger-dark);
    border-color: var(--color-danger-dark);
}

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-gray-900);
    border-color: var(--color-warning);
}

.btn-warning:hover {
    background-color: var(--color-warning-dark);
    border-color: var(--color-warning-dark);
}

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

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

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

.btn-ghost:hover {
    background-color: var(--color-gray-100);
}

/* Button sizes */
.btn-sm {
    padding: var(--btn-padding-y-sm) var(--btn-padding-x-sm);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--btn-padding-y-lg) var(--btn-padding-x-lg);
    font-size: var(--font-size-lg);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Button with icon */
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ============================================
 * CARDS
 * ============================================ */

.card {
    background-color: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition-all);
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
}

.card-header {
    padding: var(--card-padding);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    font-weight: var(--font-weight-semibold);
}

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

.card-footer {
    padding: var(--card-padding);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.card-title {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.card-subtitle {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Card variants */
.card-interactive {
    cursor: pointer;
    transition: var(--transition-all);
}

.card-interactive:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
 * BADGES
 * ============================================ */

.badge {
    display: inline-block;
    padding: var(--badge-padding-y) var(--badge-padding-x);
    font-size: var(--badge-font-size);
    font-weight: var(--badge-font-weight);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--badge-border-radius);
}

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

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

.badge-warning {
    background-color: var(--color-warning);
    color: var(--color-gray-900);
}

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

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

.badge-light {
    background-color: var(--color-gray-200);
    color: var(--color-gray-900);
}

.badge-dark {
    background-color: var(--color-gray-800);
    color: var(--color-white);
}

/* ============================================
 * ALERTS
 * ============================================ */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    position: relative;
}

.alert-success {
    background-color: var(--color-success-light);
    color: var(--color-success-dark);
    border-color: var(--color-success);
}

.alert-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning-dark);
    border-color: var(--color-warning);
}

.alert-danger {
    background-color: var(--color-danger-light);
    color: var(--color-danger-dark);
    border-color: var(--color-danger);
}

.alert-info {
    background-color: var(--color-info-light);
    color: var(--color-info-dark);
    border-color: var(--color-info);
}

.alert-dismissible {
    padding-right: 3rem;
}

.alert-close {
    position: absolute;
    top: 0;
    right: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-speed-normal);
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================
 * PROGRESS BARS
 * ============================================ */

.progress {
    display: flex;
    height: var(--progress-height);
    overflow: hidden;
    background-color: var(--progress-bg);
    border-radius: var(--progress-border-radius);
}

.progress-bar {
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    color: var(--color-white);
    text-align: center;
    white-space: nowrap;
    background-color: var(--color-primary);
    transition: width 0.6s ease;
}

.progress-bar-striped {
    background-image: linear-gradient(
            45deg,
            rgba(255, 255, 255, 0.15) 25%,
            transparent 25%,
            transparent 50%,
            rgba(255, 255, 255, 0.15) 50%,
            rgba(255, 255, 255, 0.15) 75%,
            transparent 75%,
            transparent
    );
    background-size: 1rem 1rem;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    from {
        background-position: 1rem 0;
    }
    to {
        background-position: 0 0;
    }
}

/* Progress variants */
.progress-bar-success {
    background-color: var(--color-success);
}

.progress-bar-warning {
    background-color: var(--color-warning);
}

.progress-bar-danger {
    background-color: var(--color-danger);
}

/* ============================================
 * MODALS
 * ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-index-modal);
    overflow: auto;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop-bg);
    z-index: var(--z-index-modal-backdrop);
}

.modal-content {
    position: relative;
    background-color: var(--color-white);
    border-radius: var(--modal-border-radius);
    max-width: var(--modal-max-width);
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-2xl);
    z-index: var(--z-index-modal);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--modal-padding);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    background: transparent;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: var(--transition-colors);
}

.modal-close:hover {
    background-color: var(--color-gray-100);
}

.modal-body {
    padding: var(--modal-padding);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--modal-padding);
    border-top: 1px solid var(--border-color);
}

/* ============================================
 * TOOLTIPS
 * ============================================ */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    position: absolute;
    z-index: var(--z-index-tooltip);
    background-color: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    transition: opacity var(--transition-speed-normal);
    pointer-events: none;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Tooltip positions */
.tooltip-top .tooltip-text {
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
}

.tooltip-bottom .tooltip-text {
    top: 125%;
    left: 50%;
    transform: translateX(-50%);
}

.tooltip-left .tooltip-text {
    right: 125%;
    top: 50%;
    transform: translateY(-50%);
}

.tooltip-right .tooltip-text {
    left: 125%;
    top: 50%;
    transform: translateY(-50%);
}

/* ============================================
 * DROPDOWNS
 * ============================================ */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: var(--z-index-dropdown);
    min-width: 10rem;
    padding: var(--spacing-sm) 0;
    margin: var(--spacing-xs) 0 0;
    background-color: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: dropdownSlideIn 0.2s ease-out;
}

.dropdown-menu.show {
    display: block;
}

@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    clear: both;
    font-weight: var(--font-weight-normal);
    color: var(--text-primary);
    text-align: inherit;
    white-space: nowrap;
    background-color: transparent;
    border: 0;
    cursor: pointer;
    transition: var(--transition-colors);
}

.dropdown-item:hover {
    background-color: var(--color-gray-100);
    text-decoration: none;
}

.dropdown-divider {
    height: 0;
    margin: var(--spacing-sm) 0;
    overflow: hidden;
    border-top: 1px solid var(--border-color);
}

/* ============================================
 * SPINNER / LOADER
 * ============================================ */

.spinner {
    display: inline-block;
    width: var(--loader-size);
    height: var(--loader-size);
    border: var(--loader-border-width) solid var(--color-gray-200);
    border-top-color: var(--loader-color);
    border-radius: 50%;
    animation: spinner-rotate 0.8s linear infinite;
}

@keyframes spinner-rotate {
    to {
        transform: rotate(360deg);
    }
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

/* ============================================
 * PAGINATION
 * ============================================ */

.pagination {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
}

.page-item {
    display: inline-block;
}

.page-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-primary);
    background-color: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: var(--transition-colors);
}

.page-link:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-primary);
}

.page-item.active .page-link {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.page-item.disabled .page-link {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================
 * BREADCRUMBS
 * ============================================ */

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
    list-style: none;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    padding: 0 var(--spacing-sm);
    color: var(--text-muted);
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

/* ============================================
 * TABS
 * ============================================ */

.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    position: relative;
    transition: var(--transition-colors);
}

.tab:hover {
    color: var(--color-primary);
}

.tab.active {
    color: var(--color-primary);
}

.tab.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
 * ACCORDIONS
 * ============================================ */

.accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-colors);
}

.accordion-header:hover {
    background-color: var(--color-gray-200);
}

.accordion-icon {
    transition: transform var(--transition-speed-normal);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    display: none;
    padding: var(--spacing-lg);
}

.accordion-item.active .accordion-content {
    display: block;
}

/* ============================================
 * FORM GROUPS
 * ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.form-label.required::after {
    content: " *";
    color: var(--color-danger);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--input-padding-y) var(--input-padding-x);
    border: var(--input-border-width) solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    transition: var(--transition-colors);
}

.form-control:focus {
    outline: none;
    border-color: var(--input-focus-border-color);
    box-shadow: var(--input-focus-shadow);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.invalid-feedback {
    display: none;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-danger);
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

.valid-feedback {
    display: none;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-success);
}

.form-control.is-valid ~ .valid-feedback {
    display: block;
}

/* ============================================
 * FILE UPLOAD ZONE
 * ============================================ */

.upload-zone {
    position: relative;
    padding: var(--upload-zone-padding);
    border: var(--upload-zone-border);
    border-radius: var(--upload-zone-border-radius);
    background-color: var(--upload-zone-bg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-all);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--color-primary);
    background-color: var(--color-primary-lighter);
}

.upload-zone-active {
    border: var(--upload-zone-border-active);
    background-color: var(--color-primary-lighter);
}

.upload-zone input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-zone-icon {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.upload-zone-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.upload-zone-subtext {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ============================================
 * FILE LIST
 * ============================================ */

.file-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.file-item:last-child {
    margin-bottom: 0;
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.file-icon {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.file-details {
    flex: 1;
}

.file-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.file-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.file-remove {
    background: transparent;
    border: none;
    color: var(--color-danger);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-colors);
}

.file-remove:hover {
    background-color: var(--color-danger-light);
}