@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Global Resets & Defaults */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    max-width: 100%;
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

body {
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-base);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg, video {
    max-width: 100%;
    height: auto;
    display: inline-block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--fw-semibold);
    color: var(--color-text-primary);
    line-height: 1.25;
    word-break: break-word;
}

h1 { font-size: clamp(1.5rem, 4vw, var(--fs-3xl)); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.25rem, 3vw, var(--fs-2xl)); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.125rem, 2.5vw, var(--fs-xl)); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-base); }
h6 { font-size: var(--fs-sm); }

p {
    color: var(--color-text-secondary);
    font-size: var(--fs-sm);
    line-height: 1.6;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    padding: var(--spacing-2) var(--spacing-4);
    min-height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    user-select: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.btn-secondary {
    background-color: #ffffff;
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

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

.btn-danger {
    background-color: var(--color-danger);
    color: #ffffff;
}

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

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Form Controls & Labels */
.form-group {
    margin-bottom: var(--spacing-5);
    width: 100%;
}

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

.form-control {
    width: 100%;
    max-width: 100%;
    min-height: 40px;
    padding: var(--spacing-2) var(--spacing-3);
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;
}

textarea.form-control {
    min-height: 80px;
    resize: vertical;
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.form-check-input {
    width: 16px;
    height: 16px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.form-error {
    font-size: var(--fs-xs);
    color: var(--color-danger);
    margin-top: var(--spacing-1);
}

/* Cards & Layout Modules */
.card {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-5);
    overflow: hidden;
    width: 100%;
    max-width: 100%;
}

@media (min-width: 768px) {
    .card {
        padding: var(--spacing-6);
    }
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-4);
}

/* Alert Notifications */
.alert {
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-4);
    font-size: var(--fs-sm);
    border: 1px solid transparent;
    word-break: break-word;
}

.alert-danger {
    background-color: var(--color-danger-light);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--color-danger-dark);
}

.alert-success {
    background-color: var(--color-success-light);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--color-success-dark);
}

/* Professional Responsive Tables */
.table-container {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    margin-bottom: var(--spacing-2);
}

.table {
    width: 100%;
    min-width: 580px;
    border-collapse: collapse;
    text-align: left;
    font-size: var(--fs-sm);
}

.table th {
    background-color: var(--color-bg-base);
    color: var(--color-text-secondary);
    font-weight: var(--fw-semibold);
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--color-border);
    text-transform: uppercase;
    font-size: var(--fs-xs);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.table td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    vertical-align: middle;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr:hover {
    background-color: rgba(248, 250, 252, 0.7);
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

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

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

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

/* Breadcrumbs (Unified, Clean & Wrapping) */
.breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-4);
    line-height: 1.4;
}

.breadcrumbs a {
    color: var(--color-text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: color var(--transition-fast);
}

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

.breadcrumbs a:not(:last-child)::after {
    content: "/";
    margin-left: 6px;
    margin-right: 2px;
    color: var(--color-text-muted);
    opacity: 0.6;
}

.breadcrumbs span {
    color: var(--color-text-primary);
    font-weight: var(--fw-medium);
}

/* Responsive Form Rows */
.form-row {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    width: 100%;
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    width: 100%;
}

@media (min-width: 768px) {
    .form-row-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.form-row-full {
    grid-column: 1 / -1;
}