/**
 * GPR Superstore - Base Styles
 * Reset and Foundation Styles
 */

/* Box Sizing */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Remove default margin and padding */
* {
    margin: 0;
    padding: 0;
}

/* Set root defaults */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* Body defaults */
body {
    font-family: var(--font-family-sans);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-4xl); font-weight: var(--font-bold); }
h2 { font-size: var(--text-3xl); font-weight: var(--font-bold); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

/* Paragraphs */
p {
    margin-bottom: var(--spacing-4);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

p:last-child {
    margin-bottom: 0;
}

/* Links */
a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-default);
}

a:hover {
    color: var(--text-link-hover);
}

/* Lists */
ul, ol {
    padding-left: var(--spacing-6);
}

li {
    margin-bottom: var(--spacing-1);
}

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

/* Forms */
button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* Focus styles */
:focus {
    outline: none;
}

:focus-visible {
    outline: var(--ring-width) solid var(--ring-color);
    outline-offset: var(--ring-offset);
}

/* Selection */
::selection {
    background-color: var(--color-primary-subtle);
    color: var(--color-primary-darker);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text colors */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

/* Font weights */
.font-light { font-weight: var(--font-light); }
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

/* Margin */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

/* Padding */
.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }
.max-w-sm { max-width: var(--container-sm); }
.max-w-md { max-width: var(--container-md); }
.max-w-lg { max-width: var(--container-lg); }
.max-w-xl { max-width: var(--container-xl); }

/* Height */
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Border Radius */
.rounded { border-radius: var(--radius-default); }
.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); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-default); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ============================================
   COMPONENT CLASSES
   ============================================ */

/* Alerts */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    border: 1px solid transparent;
}

.alert-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-success {
    background-color: var(--color-success-subtle);
    color: var(--color-success-dark);
    border-color: rgba(5, 150, 105, 0.25);
}

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

.alert-warning {
    background-color: var(--color-warning-subtle);
    color: var(--color-warning-dark);
    border-color: rgba(217, 119, 6, 0.25);
}

.alert-warning .alert-icon {
    color: var(--color-warning);
}

.alert-error {
    background-color: var(--color-error-subtle);
    color: var(--color-error-dark);
    border-color: rgba(220, 38, 38, 0.25);
}

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

.alert-info {
    background-color: var(--color-info-subtle);
    color: var(--color-info-dark);
    border-color: rgba(32, 65, 155, 0.25);
}

.alert-info .alert-icon {
    color: var(--color-info);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-default);
    cursor: pointer;
    text-decoration: none;
    border: none;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-xs);
    border-radius: var(--radius-md);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-6);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 161, 156, 0.28);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: none;
}

.btn-secondary {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border: 1.5px solid var(--border-default);
}

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

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

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

.btn-danger {
    background-color: var(--color-error);
    color: var(--text-inverse);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-error-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.22);
}

/* Button loading state */
.btn .btn-loader {
    display: none;
}

.btn.is-loading .btn-text {
    display: none;
}

.btn.is-loading .btn-loader {
    display: inline-flex;
}

/* SVG icons inside buttons */
.btn svg {
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

.spinner {
    width: 18px;
    height: 18px;
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group:last-child {
    margin-bottom: 0;
}

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

.form-control {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    transition: border-color 0.18s, box-shadow 0.18s;
}

.form-control:focus {
    outline: none;
    border-color: #00A19C;
    box-shadow: 0 0 0 3px rgba(0, 161, 156, 0.1);
}

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

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

.invalid-feedback {
    color: var(--color-error);
    font-size: var(--text-xs);
    margin-top: var(--spacing-1);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.form-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-primary);
}

.form-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.optional {
    font-weight: var(--font-normal);
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: var(--spacing-3);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-fast) var(--ease-default);
}

.form-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    padding-left: calc(var(--spacing-3) + 18px + var(--spacing-3));
    font-size: var(--text-sm);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-default);
}

.form-input:hover {
    border-color: var(--border-dark);
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--ring-color);
    outline: none;
}

.form-input:focus + .input-icon,
.form-input:focus ~ .input-icon {
    color: var(--color-primary);
}

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

.form-input:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.65;
}

.form-input.is-invalid {
    border-color: var(--color-error);
}

.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
}

/* Size modifiers */
.form-input-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
}
.form-input-lg {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: var(--text-lg, 1.0625rem);
    font-weight: var(--font-medium);
    border-radius: var(--radius-lg);
}

/* Input group (prefix/suffix addon) */
.input-group {
    display: flex;
    align-items: stretch;
}
.input-group-text {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    border: 1.5px solid var(--border-default);
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    white-space: nowrap;
    flex-shrink: 0;
}
.input-group .form-input,
.input-group .form-select {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    flex: 1;
    min-width: 0;
}
.input-group .form-input:hover,
.input-group .form-select:hover {
    border-color: var(--border-dark);
}
.input-group .form-input:focus,
.input-group .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--ring-color);
}

/* Select element */
.form-select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-8) var(--spacing-3) var(--spacing-4);
    font-size: var(--text-sm);
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-3) center;
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-lg);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: all var(--transition-fast) var(--ease-default);
}

.form-select:hover {
    border-color: var(--border-dark);
}

.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--ring-color);
    outline: none;
}

.form-select:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.65;
}

.form-select-sm {
    padding: var(--spacing-2) 2rem var(--spacing-2) var(--spacing-3);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
}

/* Checkbox */
.form-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-primary);
    user-select: none;
}
.form-checkbox {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    accent-color: var(--color-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
}

/* Filter toolbar */
.toolbar-filters {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.filter-group {
    display: flex;
    align-items: center;
}

.filter-group .form-input,
.filter-group .form-select,
.filter-group .form-input-sm,
.filter-group .form-select-sm {
    width: auto;
    min-width: 140px;
}

.form-error {
    display: block;
    margin-top: var(--spacing-2);
    font-size: var(--text-xs);
    color: var(--color-error);
    font-weight: var(--font-medium);
}

.form-hint {
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Password toggle */
.password-toggle {
    position: absolute;
    right: var(--spacing-3);
    padding: var(--spacing-1);
    color: var(--text-muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast) var(--ease-default);
    border-radius: var(--radius-md);
}

.password-toggle:hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.password-toggle svg {
    width: 18px;
    height: 18px;
}

/* Password requirements */
.password-requirements {
    margin-top: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.requirements-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.requirements-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-1);
}

.requirements-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-bottom: 0;
}

.requirements-list li.valid {
    color: var(--color-success);
}

.req-icon::before {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-300);
}

.requirements-list li.valid .req-icon::before {
    background-color: var(--color-success);
}

/* Checkbox */
.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.checkbox-wrapper input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    flex-shrink: 0;
    width: 17px;
    height: 17px;
    margin-top: 2px;
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-default);
    transition: all var(--transition-fast) var(--ease-default);
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkbox-wrapper:hover .checkbox-custom {
    border-color: var(--color-primary);
}

.checkbox-wrapper input:checked + .checkbox-custom {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-wrapper input:checked + .checkbox-custom::after {
    content: '';
    display: block;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-bottom: 2px;
}

.checkbox-wrapper input:focus-visible + .checkbox-custom {
    box-shadow: 0 0 0 3px var(--ring-color);
}

.checkbox-label {
    flex: 1;
}

/* Cards */
.card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-secondary);
}

.card-body {
    padding: var(--spacing-5);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--border-light);
    background-color: var(--bg-secondary);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

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

/* ── Shared Footer ── */
/* ── Footer — shared base ── */
.app-footer,
.admin-footer,
.standalone-footer {
    border-top: 1px solid #E2E8F0;
    background: #FAFBFC;
    padding: 1.5rem 2rem;
    text-align: center;
}

.app-footer {
    margin-top: 3rem;
}

.admin-footer {
    margin-top: auto;
    background: #F8F9FA;
}

.app-footer-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    font-size: 0.8125rem;   /* 13px */
    line-height: 1.5;
    color: #64748B;
}

.footer-copy {
    color: #64748B;
}

.footer-separator {
    display: inline-block;
    width: 1px;
    height: 12px;
    background: #CBD5E1;
    margin: 0 0.75rem;
    vertical-align: middle;
    user-select: none;
}

.footer-credit {
    color: #64748B;
}

.footer-credit strong {
    font-weight: 600;
    color: #00A19C;
}

/* ── Page Header (shared across modules) ── */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
}

.page-header-content h1,
.page-header-content .page-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
    margin: 0 0 var(--spacing-1);
}

.page-header-content p,
.page-header-content .page-subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex-shrink: 0;
}

/* ── Content Wrapper (used by notifications etc.) ── */
.content-wrapper {
    max-width: 100%;
}

.content-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
}

.content-header h1 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
    margin: 0 0 var(--spacing-1);
}

.content-header .text-muted {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
}

.header-left {
    flex: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}