/**
 * COMPONENT SYSTEM
 * Logistics Solution - Standardized Components
 * 
 * This file contains all standardized component styles including:
 * - Layout Constraints
 * - Button System
 * - Card System
 * - Forms & Inputs
 * - Iconography
 */

/* ============================================
   LAYOUT CONSTRAINTS
   ============================================ */

/* Container System */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-5);
    padding-right: var(--spacing-5);
}

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

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

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

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

.container-2xl {
    max-width: var(--container-2xl);
}

.container-fluid {
    max-width: 100%;
}

/* Section Spacing */
.section {
    padding: var(--spacing-16) 0;
}

.section-sm {
    padding: var(--spacing-8) 0;
}

.section-lg {
    padding: var(--spacing-24) 0;
}

/* Content Width Constraints */
.content-width-sm {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.content-width-md {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.content-width-lg {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.grid-auto-fit { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-auto-fill { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

/* ============================================
   BUTTON SYSTEM (STANDARDIZED)
   ============================================ */

/* Base Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-base);
    transition: var(--transition-base);
    background-color: transparent;
    color: var(--text-primary);
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-color: var(--color-primary);
}

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--bg-secondary);
    color: var(--color-primary);
}

/* Button Sizes */
.btn-xs {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
}

.btn-xl {
    padding: var(--spacing-5) var(--spacing-10);
    font-size: var(--font-size-xl);
}

/* Button Full Width */
.btn-block {
    width: 100%;
    display: flex;
}

/* Button with Icon */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 2rem;
    height: 2rem;
}

.btn-icon.btn-lg {
    width: 3rem;
    height: 3rem;
}

/* Button Group */
.btn-group {
    display: inline-flex;
    gap: var(--spacing-2);
    vertical-align: middle;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--radius-base);
    border-bottom-left-radius: var(--radius-base);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--radius-base);
    border-bottom-right-radius: var(--radius-base);
}

.btn-group .btn:not(:first-child):not(:last-child) {
    border-left: none;
    border-right: none;
}

/* ============================================
   CARD SYSTEM (VERY IMPORTANT)
   ============================================ */

/* Base Card */
.card {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    overflow: hidden;
    transition: var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Card Header */
.card-header {
    padding: var(--spacing-6);
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
}

.card-header h1,
.card-header h2,
.card-header h3,
.card-header h4,
.card-header h5,
.card-header h6 {
    margin-bottom: 0;
}

/* Card Body */
.card-body {
    padding: var(--spacing-6);
    flex: 1 1 auto;
}

.card-body > *:last-child {
    margin-bottom: 0;
}

/* Card Footer */
.card-footer {
    padding: var(--spacing-6);
    border-top: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* Card Image */
.card-img {
    width: 100%;
    height: auto;
    display: block;
}

.card-img-top {
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.card-img-bottom {
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

/* Card Variants */
.card-elevated {
    box-shadow: var(--shadow-lg);
}

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

.card-outlined {
    box-shadow: none;
    border-width: var(--border-width-2);
}

.card-filled {
    background-color: var(--bg-secondary);
    border-color: transparent;
}

.card-accent {
    border-left: var(--border-width-4) solid var(--color-accent);
}

.card-primary {
    border-left: var(--border-width-4) solid var(--color-primary);
}

/* Card Sizes */
.card-sm .card-header,
.card-sm .card-body,
.card-sm .card-footer {
    padding: var(--spacing-4);
}

.card-lg .card-header,
.card-lg .card-body,
.card-lg .card-footer {
    padding: var(--spacing-8);
}

/* Card Grid */
.card-grid {
    display: grid;
    gap: var(--spacing-6);
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.card-grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
}

.card-grid-3 {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.card-grid-4 {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

/* Form Group */
.form-group {
    margin-bottom: var(--spacing-6);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-group .required {
    color: var(--color-error);
}

.form-group .help-text {
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.form-group .error-message {
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

/* Input Base */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
textarea,
select {
    display: block;
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-base);
    transition: var(--transition-base);
    appearance: none;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(35, 45, 133, 0.1);
}

input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--bg-secondary);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.6;
}

input::placeholder,
textarea::placeholder {
    color: var(--color-gray-400);
    opacity: 1;
}

/* Input Sizes */
.input-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
}

.input-lg {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: var(--font-size-lg);
}

/* Input States */
.input-error {
    border-color: var(--color-error);
}

.input-error:focus {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-success {
    border-color: var(--color-success);
}

.input-success:focus {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Textarea */
textarea {
    min-height: 120px;
    resize: vertical;
}

textarea.input-sm {
    min-height: 80px;
}

textarea.input-lg {
    min-height: 160px;
}

/* Select */
select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-3) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: var(--spacing-10);
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.checkbox-group label,
.radio-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: var(--font-weight-normal);
    cursor: pointer;
}

.checkbox-group-inline,
.radio-group-inline {
    flex-direction: row;
    flex-wrap: wrap;
}

/* File Input */
input[type="file"] {
    padding: var(--spacing-2);
    font-size: var(--font-size-sm);
}

/* Form Validation */
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
    border-color: var(--color-error);
}

.form-group.has-success input,
.form-group.has-success textarea,
.form-group.has-success select {
    border-color: var(--color-success);
}

/* Form Layouts */
.form-inline {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    align-items: flex-end;
}

.form-inline .form-group {
    flex: 1 1 auto;
    margin-bottom: 0;
    min-width: 200px;
}

.form-horizontal {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-4) var(--spacing-6);
    align-items: start;
}

.form-horizontal .form-group {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: subgrid;
    margin-bottom: 0;
}

.form-horizontal label {
    margin-bottom: 0;
}

/* ============================================
   ICONOGRAPHY RULES
   ============================================ */

/* Icon Base */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    flex-shrink: 0;
    vertical-align: middle;
    fill: currentColor;
}

/* Icon Sizes */
.icon-xs {
    width: 0.75rem;
    height: 0.75rem;
}

.icon-sm {
    width: 1rem;
    height: 1rem;
}

.icon-md {
    width: 1.25rem;
    height: 1.25rem;
}

.icon-lg {
    width: 1.5rem;
    height: 1.5rem;
}

.icon-xl {
    width: 2rem;
    height: 2rem;
}

.icon-2xl {
    width: 2.5rem;
    height: 2.5rem;
}

/* Icon Colors */
.icon-primary {
    color: var(--color-primary);
    fill: var(--color-primary);
}

.icon-accent {
    color: var(--color-accent);
    fill: var(--color-accent);
}

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

.icon-success {
    color: var(--color-success);
    fill: var(--color-success);
}

.icon-error {
    color: var(--color-error);
    fill: var(--color-error);
}

/* Icon in Buttons */
.btn .icon {
    width: 1em;
    height: 1em;
}

.btn-icon-left .icon {
    order: -1;
}

.btn-icon-right .icon {
    order: 1;
}

/* Icon Spacing */
.icon-spacing-sm {
    margin-right: var(--spacing-1);
}

.icon-spacing-md {
    margin-right: var(--spacing-2);
}

.icon-spacing-lg {
    margin-right: var(--spacing-3);
}

/* ============================================
   IMAGERY GUIDELINES (CSS Classes)
   ============================================ */

/* Image Base */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Responsive Images */
.img-responsive {
    width: 100%;
    height: auto;
    display: block;
}

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

/* Image Sizing */
.img-xs {
    width: 2rem;
    height: 2rem;
    object-fit: cover;
}

.img-sm {
    width: 4rem;
    height: 4rem;
    object-fit: cover;
}

.img-md {
    width: 8rem;
    height: 8rem;
    object-fit: cover;
}

.img-lg {
    width: 12rem;
    height: 12rem;
    object-fit: cover;
}

.img-xl {
    width: 16rem;
    height: 16rem;
    object-fit: cover;
}

/* Image Shapes */
.img-rounded {
    border-radius: var(--radius-lg);
}

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

.img-square {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

/* Image Aspect Ratios */
.img-16-9 {
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.img-4-3 {
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.img-1-1 {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

/* Image Overlay */
.img-overlay {
    position: relative;
    overflow: hidden;
}

.img-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.3) 100%
    );
    pointer-events: none;
}

/* Image Lazy Loading */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Image Placeholder */
.img-placeholder {
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

/* Image Caption */
.img-caption {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
}

/* Responsive Images */
@media (max-width: 768px) {
    .img-md {
        width: 6rem;
        height: 6rem;
    }
    
    .img-lg {
        width: 10rem;
        height: 10rem;
    }
    
    .img-xl {
        width: 14rem;
        height: 14rem;
    }
}

/* ============================================
   RESPONSIVE COMPONENTS
   ============================================ */

@media (max-width: 1024px) {
    .grid-cols-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .form-horizontal {
        grid-template-columns: 1fr;
    }
    
    .form-horizontal .form-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
    
    .section {
        padding: var(--spacing-12) 0;
    }
    
    .section-lg {
        padding: var(--spacing-16) 0;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .card-grid,
    .card-grid-2,
    .card-grid-3,
    .card-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .btn-block {
        width: 100%;
    }
    
    .form-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-inline .form-group {
        min-width: 100%;
    }
}

@media (max-width: 640px) {
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        border-radius: var(--radius-base);
        width: 100%;
    }
}