/* ============================================
   Contact Form - Advanced UI/UX Styles
   ============================================ */

/* Floating Labels */
.form-group {
    position: relative;
}

.form-label {
    position: absolute;
    left: calc(var(--space-4) + var(--space-4) + 20px + var(--space-3)); /* icon padding + icon + gap */
    top: 50%;
    transform: translateY(-50%);
    color: var(--tertiary);
    font-size: var(--text-base);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
    padding: 0 4px;
    margin: 0;
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
    top: 0;
    left: var(--space-3);
    font-size: var(--text-xs);
    color: var(--accent);
    background: var(--bg);
    transform: translateY(-50%);
}

.form-input:focus ~ .form-label {
    color: var(--accent);
}

/* Character Counter */
.char-counter {
    position: absolute;
    right: 0;
    bottom: -20px;
    font-size: 11px;
    color: var(--tertiary);
    transition: color 0.3s;
}

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

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

/* Progress Ring for Button */
.submit-progress {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    opacity: 0;
    transition: opacity 0.3s;
}

form.loading .submit-progress {
    opacity: 1;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring__circle {
    stroke-dasharray: 60;
    stroke-dashoffset: 60;
    transition: stroke-dashoffset 0.3s;
}

form.loading .progress-ring__circle {
    animation: progress 1.5s ease-in-out;
}

@keyframes progress {
    0% { stroke-dashoffset: 60; }
    100% { stroke-dashoffset: 0; }
}

/* Strength Meter for Email */
.strength-meter {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0%;
    transition: all 0.3s;
    border-radius: 2px;
}

.strength-meter.weak {
    width: 33%;
    background: var(--error);
}

.strength-meter.medium {
    width: 66%;
    background: var(--warning);
}

.strength-meter.strong {
    width: 100%;
    background: var(--success);
}

/* Auto-format Highlight */
.form-input.auto-formatted {
    animation: highlightChange 0.5s ease-out;
}

@keyframes highlightChange {
    0% {
        background: rgba(0, 217, 126, 0.2);
    }
    100% {
        background: rgba(255, 255, 255, 0.03);
    }
}

/* Field Level Help */
.field-help {
    display: none;
    position: absolute;
    bottom: -28px;
    left: 0;
    font-size: 11px;
    color: var(--secondary);
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s;
}

.form-group:hover .field-help,
.form-input:focus ~ .field-help {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Autofill Animation */
@keyframes autofill {
    0% {
        background: rgba(255, 77, 28, 0.1);
    }
    100% {
        background: rgba(255, 255, 255, 0.03);
    }
}

.form-input:-webkit-autofill {
    animation: autofill 0.5s ease-out;
}

/* Success Animation - Confetti */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    opacity: 0;
}

@keyframes confetti-fall {
    0% {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(100vh) rotate(720deg);
    }
}

/* Enhanced Button States */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary .btn-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-primary .btn-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #ff4d1c 0%, #ff7b47 100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.btn-primary:hover .btn-bg {
    transform: scaleX(1.05);
}

.btn-primary:active .btn-bg {
    transform: scaleX(0.95);
}

.btn-primary.success-state .btn-bg {
    background: var(--success);
}

.btn-primary.error-state .btn-bg {
    background: var(--error);
}

/* Shimmer Effect for Loading */
@keyframes shimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

.form-input.loading-shimmer {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.03) 0%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.03) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Tooltip */
.form-tooltip {
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: help;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 12px;
    color: var(--secondary);
}

.form-group:hover .form-tooltip {
    opacity: 1;
}

.form-tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 12px;
    white-space: nowrap;
    z-index: 10;
}

/* Progress Indicator */
.form-progress {
    margin-bottom: var(--space-6);
}

.progress-bar-bg {
    width: 100%;
    height: 4px;
    background: var(--surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-full);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    color: var(--tertiary);
}

/* Input Highlight Effect */
.form-input-highlight {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.form-input:focus ~ .form-input-highlight {
    width: 100%;
}

/* Focus Trap Animation */
@keyframes focusRing {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 77, 28, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(255, 77, 28, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 77, 28, 0);
    }
}

.form-input:focus {
    animation: focusRing 0.6s ease-out;
}

/* Success State Animation */
@keyframes successPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.form-group.success-animation {
    animation: successPulse 0.6s ease-out;
}

/* Field Validation Icon */
.validation-icon {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    opacity: 0;
    transition: all 0.3s;
}

.form-group.valid .validation-icon.valid-icon {
    opacity: 1;
    color: var(--success);
}

.form-group.invalid .validation-icon.invalid-icon {
    opacity: 1;
    color: var(--error);
}

/* Responsive Improvements */
@media (max-width: 768px) {
    .form-label {
        left: calc(var(--space-3) + 20px + var(--space-2));
        font-size: 11px;
    }

    .field-help {
        display: none !important;
    }

    .form-tooltip {
        display: none;
    }

    .char-counter {
        bottom: -18px;
        font-size: 10px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .form-input,
    .form-label,
    .char-counter,
    .validation-icon,
    .progress-bar-fill,
    .form-input-highlight {
        transition: none !important;
        animation: none !important;
    }

    .confetti {
        display: none;
    }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
    .form-input:-webkit-autofill,
    .form-input:-webkit-autofill:hover,
    .form-input:-webkit-autofill:focus {
        -webkit-text-fill-color: var(--primary);
        -webkit-box-shadow: 0 0 0 30px var(--bg) inset;
        transition: background-color 5000s ease-in-out 0s;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .form-input {
        border-width: 2px;
    }

    .form-input:focus {
        border-width: 3px;
    }

    .validation-icon {
        opacity: 1;
    }
}