/**
 * Reusable Component Library
 * Nexus Application
 *
 * This file contains shared component patterns used across the application.
 * All components use CSS variables from variables.css for theming.
 */

/* ========================================
   Navigation
   ======================================== */

/* Ensure navbar stays above all other content */
.navbar {
    position: relative;
    z-index: 1030;
}

/* Ensure dropdown menus appear above navbar */
.dropdown-menu {
    z-index: 1040;
}

/* ========================================
   Containers
   ======================================== */

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (max-width: 768px) {
    .app-container {
        padding: 0 0.5rem;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 0 0.5rem;
    }
}

/* ========================================
   Headers
   ======================================== */

.app-header {
    border-bottom: 1px solid var(--color-border-primary);
    padding-bottom: 1.5rem;
}

.app-header-icon {
    width: var(--header-icon-size);
    height: var(--header-icon-size);
    border-radius: var(--header-icon-radius);
    background-color: var(--header-icon-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--header-icon-color);
}

@media (max-width: 768px) {
    .app-header {
        padding-bottom: 1rem;
    }

    .app-header-icon {
        width: var(--header-icon-size-sm);
        height: var(--header-icon-size-sm);
        font-size: 1.1rem;
    }
}

/* ========================================
   Cards
   ======================================== */

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.2s ease;
    overflow: hidden;
}

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

.app-card-item {
    padding: var(--card-padding);
    border-bottom: 1px solid var(--color-bg-secondary);
}

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

.app-card-item:hover {
    background-color: var(--color-bg-hover);
}

@media (max-width: 768px) {
    .app-card-item {
        padding: var(--card-padding-sm);
    }
}

@media (max-width: 576px) {
    .app-card-item {
        padding: var(--card-padding-xs);
    }
}

/* ========================================
   Card Content Layout
   ======================================== */

.app-card-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.app-card-label {
    flex: 1;
    margin-bottom: 0;
}

.app-card-title {
    display: block;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.app-card-description {
    display: block;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.app-card-control {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .app-card-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .app-card-control {
        width: 100%;
        display: flex;
        justify-content: flex-end;
    }
}

@media (min-width: 769px) {
    .app-card-content {
        flex-direction: row;
        align-items: center;
        gap: 1rem;
    }

    .app-card-control {
        width: auto;
    }
}

/* ========================================
   Sections
   ======================================== */

.app-section {
    margin-bottom: var(--section-margin);
}

.app-section-header h5 {
    color: var(--color-text-tertiary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.app-section-header p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .app-section {
        margin-bottom: var(--section-margin-sm);
    }
}

/* ========================================
   Sidebars
   ======================================== */

.app-sidebar {
    padding-left: 2rem;
}

@media (max-width: 992px) {
    .app-sidebar {
        padding-left: 0;
        margin-top: 2rem;
    }
}

/* ========================================
   Info Cards
   ======================================== */

.app-info-card {
    background: var(--color-bg-secondary);
    border-radius: var(--card-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.app-info-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.app-info-header i {
    color: var(--color-border-focus);
    font-size: 1.1rem;
}

.app-info-header h6 {
    margin: 0;
    font-weight: 600;
    color: var(--color-text-tertiary);
}

.app-info-card p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 0;
}

@media (max-width: 576px) {
    .app-info-card {
        padding: 1rem;
    }
}

/* ========================================
   Form Elements
   ======================================== */

.app-form-item .form-control,
.app-form-item .form-select,
.app-form-item input[type="text"],
.app-form-item input[type="email"],
.app-form-item input[type="tel"],
.app-form-item input[type="date"],
.app-form-item textarea,
.app-form-item select {
    border: 1px solid var(--form-border);
    border-radius: var(--form-radius);
    padding: var(--form-padding);
    font-size: var(--font-size-base);
    background-color: var(--form-bg);
    color: var(--form-text);
    width: 100%;
}

.app-form-item .form-control:focus,
.app-form-item .form-select:focus,
.app-form-item input:focus,
.app-form-item textarea:focus,
.app-form-item select:focus {
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 0.2rem var(--color-border-focus-shadow);
    outline: 0;
}

.app-form-item .form-control::placeholder,
.app-form-item input::placeholder,
.app-form-item textarea::placeholder {
    color: var(--form-placeholder);
}

.app-form-item textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Form Labels */
.app-form-label {
    display: block;
    margin-bottom: 0.5rem;
    cursor: default;
}

.app-form-label-title {
    display: block;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
    font-size: var(--font-size-base);
}

/* Form Help Text */
.app-form-help {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

/* Form Actions */
.app-form-actions {
    padding: 1.5rem 0;
    border-top: 1px solid var(--color-border-primary);
    margin-top: 1.5rem;
}

.app-form-actions .btn {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--form-radius);
}

@media (max-width: 768px) {
    .app-form-actions {
        padding: 1rem 0;
        margin-top: 1rem;
    }

    .app-form-actions .d-flex {
        flex-direction: column-reverse;
        gap: 0.75rem;
    }

    .app-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (min-width: 768px) {
    .app-form-actions {
        padding: 2rem 0;
        margin-top: 2rem;
    }
}

/* ========================================
   Badges
   ======================================== */

.app-badge {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-secondary);
    border-radius: 6px;
    padding: 0.25rem 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

/* ========================================
   Notes & Alerts
   ======================================== */

.app-note {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border-radius: var(--form-radius);
    margin-top: 1rem;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.app-note i {
    margin-right: 0.5rem;
}

/* ========================================
   Empty States
   ======================================== */

.app-empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--color-text-secondary);
}

.app-empty-state h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

/* ========================================
   Utility Classes
   ======================================== */

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

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

.app-text-tertiary {
    color: var(--color-text-tertiary);
}

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

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

.app-border-primary {
    border-color: var(--color-border-primary);
}

/* Button Utilities */
.btn-icon {
    width: var(--button-size-md);
    height: var(--button-size-md);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon-sm {
    width: var(--button-size-sm);
    height: var(--button-size-sm);
}

.btn-icon-lg {
    width: var(--button-size-lg);
    height: var(--button-size-lg);
}

/* Icon Size Utilities */
.icon-xs { font-size: var(--icon-xs); }
.icon-sm { font-size: var(--icon-sm); }
.icon-md { font-size: var(--icon-md); }
.icon-lg { font-size: var(--icon-lg); }
.icon-xl { font-size: var(--icon-xl); }
.icon-2xl { font-size: var(--icon-2xl); }

/* Icon Positioning */
.icon-absolute-left {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
}

.icon-absolute-center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

/* Text Size Utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

/* Line Height Utilities */
.leading-tight { line-height: var(--line-height-tight); }
.leading-snug { line-height: var(--line-height-snug); }
.leading-normal { line-height: var(--line-height-normal); }
.leading-relaxed { line-height: var(--line-height-relaxed); }

/* Spacing Utilities */
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }

/* Height Utilities */
.h-sm { height: var(--button-size-sm); }
.h-md { height: var(--button-size-md); }
.h-lg { height: var(--button-size-lg); }

/* Cursor Utilities */
.cursor-pointer { cursor: pointer; }

/* Button Reset for Dropdown Items */
.btn-dropdown-item {
    background: none;
    border: none;
    width: 100%;
    text-align: left;
}

/* ========================================
   Rounded Button Design System
   ======================================== */

/* Default gentle rounding for all standard buttons */
.btn:not(.btn-link):not(.btn-close):not(.dropdown-item):not(.btn-dropdown-item) {
    border-radius: 8px;
}

/* Slightly less rounding for small buttons */
.btn.btn-sm:not(.btn-link) {
    border-radius: 6px;
}

/* Icon buttons stay perfectly circular */
.btn-icon,
.btn-icon-sm,
.btn-icon-lg {
    border-radius: 50% !important;
}

/* Additional rounding utilities */
.btn-rounded-sm { border-radius: 6px !important; }
.btn-rounded-md { border-radius: 8px !important; }
.btn-rounded-lg { border-radius: 12px !important; }
.btn-rounded-xl { border-radius: 16px !important; }
.btn-rounded-full { border-radius: 50rem !important; }

/* ========================================
   Reusable Search & Filter Components
   ======================================== */

/* Styled Search Input - Used across list pages */
.search-input-styled {
    background-color: var(--color-bg-secondary);
    border: 0;
    border-radius: 12px;
    height: 44px;
    font-size: 0.95rem;
}

.search-input-styled::placeholder {
    color: var(--form-placeholder);
}

.search-input-styled:focus {
    background-color: var(--form-bg);
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 0.2rem var(--color-border-focus-shadow);
}

/* Styled Select/Dropdown - Used for filters and sorting */
.select-styled {
    background-color: var(--color-bg-secondary);
    border: 0;
    border-radius: 12px;
    height: 44px;
    font-size: 0.9rem;
}

.select-styled:focus {
    background-color: var(--form-bg);
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 0.2rem var(--color-border-focus-shadow);
}

/* Search Icon Positioning */
.search-icon-positioned {
    color: var(--color-text-secondary);
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.5;
    font-size: 0.875rem;
}

/* Clear Button Styling */
.clear-btn-styled {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    color: var(--color-text-secondary);
}

.clear-btn-styled:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border-color: var(--color-border-focus);
}

/* Responsive Search/Filter Layout */
@media (max-width: 767px) {
    .search-filter-form {
        flex-wrap: wrap;
    }

    .search-filter-form .select-styled {
        width: 100% !important;
        margin-top: 0.5rem;
        order: 10; /* Move to bottom */
    }
}