/**
 * Form UX Enhancement Styles
 * Provides improved form interactions, validation feedback, and accessibility
 * Brew Haha Coffeehouse - CafeMS
 */

/* ==========================================================================
   CSS Variables for Form Theming
   ========================================================================== */

:root {
    --form-primary: #6F4E37;
    --form-primary-light: #8B6914;
    --form-success: #28a745;
    --form-error: #dc3545;
    --form-warning: #ffc107;
    --form-info: #17a2b8;
    --form-border: #ced4da;
    --form-border-focus: #6F4E37;
    --form-bg: #fff;
    --form-text: #495057;
    --form-placeholder: #6c757d;
    --form-label: #495057;
    --form-disabled-bg: #e9ecef;
    --form-transition: 0.2s ease-in-out;
}

/* ==========================================================================
   Enhanced Input Styles
   ========================================================================== */

.form-control-enhanced {
    position: relative;
    transition: border-color var(--form-transition), box-shadow var(--form-transition);
}

.form-control-enhanced:focus {
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 0.2rem rgba(111, 78, 55, 0.25);
}

/* Input with icon - wrapper pattern */
.input-icon {
    position: relative;
    display: block;
    width: 100%;
}

/* Icon positioning - works whether icon is before or after input */
.input-icon > i:first-child,
.input-icon > i:not(.form-control),
.input-icon > [class*="fa-"]:first-child {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--form-placeholder);
    pointer-events: none;
    transition: color var(--form-transition);
    z-index: 2;
    font-size: 1rem;
    line-height: 1;
}

/* Ensure inputs have padding for icon */
.input-icon > input,
.input-icon > select,
.input-icon > textarea,
.input-icon > .form-control {
    padding-left: 2.5rem !important;
    width: 100%;
}

/* Icon color change on focus - using :has() for modern browsers and sibling for fallback */
.input-icon:has(input:focus) > i,
.input-icon:has(select:focus) > i,
.input-icon:has(textarea:focus) > i,
.input-icon:has(input:focus) > [class*="fa-"],
.input-icon:has(select:focus) > [class*="fa-"],
.input-icon:has(textarea:focus) > [class*="fa-"] {
    color: var(--form-primary);
}

/* Fallback for browsers without :has() support */
.input-icon > input:focus ~ i,
.input-icon > input:not(:placeholder-shown) ~ i,
.input-icon > select:focus ~ i,
.input-icon > textarea:focus ~ i {
    color: var(--form-primary);
}

/* Legacy input-with-icon class support */
.input-with-icon {
    position: relative;
}

.input-with-icon .form-control {
    padding-left: 2.5rem;
}

.input-with-icon .input-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--form-placeholder);
    pointer-events: none;
    transition: color var(--form-transition);
}

.input-with-icon .form-control:focus + .input-icon,
.input-with-icon .form-control:not(:placeholder-shown) + .input-icon {
    color: var(--form-primary);
}

/* Character counter styles */
.character-counter {
    position: absolute;
    right: 10px;
    bottom: 5px;
    font-size: 0.75rem;
    color: var(--form-placeholder);
    pointer-events: none;
}

.character-counter.warning {
    color: var(--form-warning);
}

.character-counter.danger {
    color: var(--form-error);
}

/* Password strength indicator */
.password-strength {
    margin-top: 0.5rem;
}

.password-strength .strength-bar {
    height: 4px;
    background-color: #e9ecef;
    border-radius: 2px;
    overflow: hidden;
}

.password-strength .strength-fill {
    height: 100%;
    width: 0;
    transition: width 0.3s ease, background-color 0.3s ease;
}

.password-strength .strength-fill.weak {
    background-color: var(--form-error);
}

.password-strength .strength-fill.fair {
    background-color: var(--form-warning);
}

.password-strength .strength-fill.good {
    background-color: var(--form-info);
}

.password-strength .strength-fill.strong {
    background-color: var(--form-success);
}

.password-strength .strength-text {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* Form progress bar - simple inline version */
.form-progress {
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.form-progress .form-progress-fill {
    height: 100%;
    width: 0;
    background-color: var(--form-primary);
    transition: width 0.3s ease;
    border-radius: 4px;
}

.form-progress .form-progress-text {
    position: absolute;
    right: 0;
    top: -1.5rem;
    font-size: 0.75rem;
    color: var(--form-placeholder);
}

/* Enhanced select styling */
.enhanced-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem !important;
}

/* Enhanced checkbox styling */
.enhanced-checkbox {
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
}

.enhanced-checkbox:checked {
    background-color: var(--form-primary);
    border-color: var(--form-primary);
}

/* ==========================================================================
   Floating Labels
   ========================================================================== */

.floating-label-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.floating-label-group .form-control {
    height: calc(3.5rem + 2px);
    padding: 1rem 0.75rem;
    line-height: 1.25;
}

.floating-label-group .form-control:focus,
.floating-label-group .form-control:not(:placeholder-shown) {
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.floating-label-group .form-control::-webkit-input-placeholder {
    color: transparent;
}

.floating-label-group .form-control::-moz-placeholder {
    color: transparent;
}

.floating-label-group .form-control:-ms-input-placeholder {
    color: transparent;
}

.floating-label-group .form-control::placeholder {
    color: transparent;
}

.floating-label-group label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.75rem;
    pointer-events: none;
    border: 1px solid transparent;
    transform-origin: 0 0;
    transition: opacity 0.1s ease-in-out, transform 0.1s ease-in-out;
    color: var(--form-placeholder);
    margin-bottom: 0;
}

.floating-label-group .form-control:focus ~ label,
.floating-label-group .form-control:not(:placeholder-shown) ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
    color: var(--form-primary);
}

.floating-label-group select.form-control {
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.floating-label-group select.form-control ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* ==========================================================================
   Validation States
   ========================================================================== */

/* Valid state */
.form-control.is-valid,
.was-validated .form-control:valid {
    border-color: var(--form-success);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid:focus,
.was-validated .form-control:valid:focus {
    border-color: var(--form-success);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Invalid state */
.form-control.is-invalid,
.was-validated .form-control:invalid {
    border-color: var(--form-error);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23dc3545' viewBox='-2 -2 7 7'%3e%3cpath stroke='%23dc3545' d='M0 0l3 3m0-3L0 3'/%3e%3ccircle r='.5'/%3e%3ccircle cx='3' r='.5'/%3e%3ccircle cy='3' r='.5'/%3e%3ccircle cx='3' cy='3' r='.5'/%3e%3c/svg%3E");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid:focus,
.was-validated .form-control:invalid:focus {
    border-color: var(--form-error);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Validation messages */
.valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--form-success);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--form-error);
}

.form-control.is-valid ~ .valid-feedback,
.form-control.is-valid ~ .valid-tooltip,
.was-validated .form-control:valid ~ .valid-feedback,
.was-validated .form-control:valid ~ .valid-tooltip {
    display: block;
}

.form-control.is-invalid ~ .invalid-feedback,
.form-control.is-invalid ~ .invalid-tooltip,
.was-validated .form-control:invalid ~ .invalid-feedback,
.was-validated .form-control:invalid ~ .invalid-tooltip {
    display: block;
}

/* Inline validation indicator */
.validation-indicator {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    opacity: 0;
    transition: opacity var(--form-transition);
}

.validation-indicator.show {
    opacity: 1;
}

.validation-indicator.valid {
    color: var(--form-success);
}

.validation-indicator.invalid {
    color: var(--form-error);
}

/* ==========================================================================
   Character Counter
   ========================================================================== */

.char-counter-wrapper {
    position: relative;
}

.char-counter {
    position: absolute;
    right: 10px;
    bottom: -1.5rem;
    font-size: 0.75rem;
    color: var(--form-placeholder);
    transition: color var(--form-transition);
}

.char-counter.warning {
    color: var(--form-warning);
}

.char-counter.danger {
    color: var(--form-error);
}

/* ==========================================================================
   Password Strength Indicator
   ========================================================================== */

.password-strength-wrapper {
    position: relative;
}

.password-strength {
    height: 4px;
    margin-top: 0.5rem;
    background-color: #e9ecef;
    border-radius: 2px;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0;
    transition: width 0.3s ease, background-color 0.3s ease;
}

.password-strength-bar.weak {
    width: 25%;
    background-color: var(--form-error);
}

.password-strength-bar.fair {
    width: 50%;
    background-color: var(--form-warning);
}

.password-strength-bar.good {
    width: 75%;
    background-color: var(--form-info);
}

.password-strength-bar.strong {
    width: 100%;
    background-color: var(--form-success);
}

.password-strength-text {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    color: var(--form-placeholder);
}

/* Password toggle visibility */
.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--form-placeholder);
    cursor: pointer;
    padding: 0.25rem;
    transition: color var(--form-transition);
}

.password-toggle:hover {
    color: var(--form-primary);
}

.password-toggle:focus {
    outline: none;
    color: var(--form-primary);
}

/* ==========================================================================
   Form Groups and Sections
   ========================================================================== */

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e9ecef;
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

/* Required field indicator */
.required-indicator {
    color: var(--form-error);
    margin-left: 2px;
}

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

/* ==========================================================================
   Input Animations
   ========================================================================== */

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.form-control.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes pulse-border {
    0% { box-shadow: 0 0 0 0 rgba(111, 78, 55, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(111, 78, 55, 0); }
    100% { box-shadow: 0 0 0 0 rgba(111, 78, 55, 0); }
}

.form-control.pulse {
    animation: pulse-border 1s ease-out;
}

/* ==========================================================================
   Auto-save Indicator
   ========================================================================== */

.autosave-indicator {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--form-placeholder);
    margin-left: 1rem;
    opacity: 0;
    transition: opacity var(--form-transition);
}

.autosave-indicator.show {
    opacity: 1;
}

.autosave-indicator.saving {
    color: var(--form-info);
}

.autosave-indicator.saved {
    color: var(--form-success);
}

.autosave-indicator .spinner {
    width: 14px;
    height: 14px;
    border: 2px solid #e9ecef;
    border-top-color: var(--form-info);
    border-radius: 50%;
    margin-right: 0.5rem;
    animation: spin 0.8s linear infinite;
}

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

.autosave-indicator .icon {
    margin-right: 0.5rem;
}

/* ==========================================================================
   Form Progress Indicator
   ========================================================================== */

.form-progress {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    position: relative;
}

.form-progress::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #e9ecef;
    z-index: 0;
}

.form-progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.form-progress-step .step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #e9ecef;
    color: var(--form-placeholder);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--form-transition);
}

.form-progress-step.active .step-number {
    background-color: var(--form-primary);
    color: #fff;
}

.form-progress-step.completed .step-number {
    background-color: var(--form-success);
    color: #fff;
}

.form-progress-step .step-label {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--form-placeholder);
    text-align: center;
}

.form-progress-step.active .step-label {
    color: var(--form-primary);
    font-weight: 600;
}

/* ==========================================================================
   Checkbox and Radio Enhancements
   ========================================================================== */

.custom-control-enhanced {
    position: relative;
    padding-left: 2rem;
    cursor: pointer;
}

.custom-control-enhanced input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.custom-control-enhanced .checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #fff;
    border: 2px solid var(--form-border);
    border-radius: 3px;
    transition: all var(--form-transition);
}

.custom-control-enhanced input:checked ~ .checkmark {
    background-color: var(--form-primary);
    border-color: var(--form-primary);
}

.custom-control-enhanced .checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.custom-control-enhanced input:checked ~ .checkmark::after {
    display: block;
}

.custom-control-enhanced:hover .checkmark {
    border-color: var(--form-primary);
}

/* Radio button variant */
.custom-control-enhanced.radio .checkmark {
    border-radius: 50%;
}

.custom-control-enhanced.radio .checkmark::after {
    left: 4px;
    top: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
    border: none;
    transform: none;
}

/* ==========================================================================
   Form Hints and Help Text
   ========================================================================== */

.form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--form-placeholder);
}

.form-hint.info {
    color: var(--form-info);
}

.form-hint.warning {
    color: var(--form-warning);
}

/* Tooltip-style hint */
.hint-tooltip {
    position: relative;
    display: inline-block;
    margin-left: 0.5rem;
    color: var(--form-placeholder);
    cursor: help;
}

.hint-tooltip .hint-content {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--form-transition);
}

.hint-tooltip .hint-content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

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

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 768px) {
    .floating-label-group .form-control {
        height: calc(3rem + 2px);
    }

    .form-progress-step .step-label {
        display: none;
    }

    .form-progress-step .step-number {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
}

/* ==========================================================================
   Focus Management for Accessibility
   ========================================================================== */

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

/* Skip link for keyboard navigation */
.skip-to-form {
    position: absolute;
    left: -9999px;
    z-index: 999;
    padding: 0.5rem 1rem;
    background: var(--form-primary);
    color: #fff;
    text-decoration: none;
}

.skip-to-form:focus {
    left: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control {
        border-width: 2px;
    }

    .form-control:focus {
        outline: 3px solid;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .form-control,
    .floating-label-group label,
    .password-strength-bar,
    .autosave-indicator {
        transition: none;
    }

    .form-control.shake {
        animation: none;
    }

    .form-control.pulse {
        animation: none;
    }
}