/* ========================================
   GLOBAL UX ENHANCEMENTS
   Smooth scroll, animations, utilities
   ======================================== */

/* Smooth Scroll Behavior */
html {
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-secondary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #52e3c2;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-secondary);
    color: var(--color-primary);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 998;
    box-shadow: 0 4px 20px rgba(100, 255, 218, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: #52e3c2;
    transform: translateY(-5px);
    box-shadow: 0 6px 30px rgba(100, 255, 218, 0.5);
}

.back-to-top i {
    font-size: 1.2rem;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 25, 47, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-spinner.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(100, 255, 218, 0.2);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Notification System */
.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    min-width: 300px;
    max-width: 400px;
    padding: 16px 20px;
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-secondary);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
    z-index: 9999;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification.success {
    border-left-color: #4ade80;
}

.notification.error {
    border-left-color: #f87171;
}

.notification.warning {
    border-left-color: #fbbf24;
}

.notification.info {
    border-left-color: var(--color-secondary);
}

.notification-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification.success .notification-icon {
    color: #4ade80;
}

.notification.error .notification-icon {
    color: #f87171;
}

.notification.warning .notification-icon {
    color: #fbbf24;
}

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

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.notification-message {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.4;
}

.notification-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.notification-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-main);
}

/* Enhanced Focus States */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Skip to Content Link (Accessibility) */
.skip-to-content {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    z-index: 10001;
}

.skip-to-content:focus {
    width: auto !important;
    height: auto !important;
    padding: 10px 20px !important;
    margin: 0 !important;
    clip: auto !important;
    top: 20px !important;
    left: 20px !important;
    background: var(--color-secondary);
    color: var(--color-primary);
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    outline: 2px solid #fff;
}

/* Enhanced Button States */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Card Hover Effects */
.card,
.service-card,
.feature-card,
.project-card {
    transition: all 0.3s ease;
}

.card:hover,
.service-card:hover,
.feature-card:hover,
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(100, 255, 218, 0.2);
}

/* Form Enhancement */
.form-group {
    position: relative;
}

.form-group input:focus+label,
.form-group textarea:focus+label,
.form-group select:focus+label {
    color: var(--color-secondary);
}

.form-error {
    color: #f87171;
    font-size: 0.875rem;
    margin-top: 4px;
    display: none;
}

.form-group.error .form-error {
    display: block;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #f87171 !important;
}

.form-success {
    color: #4ade80;
    font-size: 0.875rem;
    margin-top: 4px;
    display: none;
}

.form-group.success .form-success {
    display: block;
}

.form-group.success input,
.form-group.success textarea,
.form-group.success select {
    border-color: #4ade80 !important;
}

/* Character Counter */
.char-counter {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: right;
    margin-top: 4px;
}

.char-counter.warning {
    color: #fbbf24;
}

.char-counter.error {
    color: #f87171;
}

/* Page Transition */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    z-index: 10001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
}

.page-transition.active {
    opacity: 1;
    visibility: visible;
}

/* Tooltip */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 8px 12px;
    background: rgba(10, 25, 47, 0.95);
    color: var(--color-text-main);
    font-size: 0.875rem;
    white-space: nowrap;
    border-radius: 6px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 90px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .notification {
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
    }

    [data-tooltip]::after {
        display: none;
    }
}

/* Print Styles */
@media print {

    .back-to-top,
    .notification,
    .loading-spinner {
        display: none !important;
    }
}