/**
 * Enhanced JavaScript functionality styles for Darkheim Studio
 * Supports loading indicators, notifications, modals, and user interactions
 */

/* ===== Loading Indicator ===== */
.navigation-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: var(--z-max);
    backdrop-filter: blur(var(--blur-sm));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.navigation-loading.show {
    opacity: 1;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-3xl);
    background: var(--color-dark-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--color-dark-border);
    transform: scale(0.9);
    animation: modalSlideIn var(--animation-duration-slow) ease-out forwards;
    max-width: 320px;
    text-align: center;
}

@keyframes modalSlideIn {
    0% {
        transform: scale(0.8) translateY(-20px);
        opacity: 0;
    }
    100% {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-dark-border, #475569);
    border-top: 4px solid var(--color-accent, #3b82f6);
    border-radius: 50%;
    animation: spin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    position: relative;
}

.spinner::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 2px solid transparent;
    border-top: 2px solid var(--color-accent-light, #60a5fa);
    border-radius: 50%;
    animation: spin 2s linear infinite reverse;
    opacity: 0.3;
}

.loading-text {
    color: var(--color-text-secondary, #cbd5e1);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Enhanced loading progress bar */
.loading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-tech, linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4));
    background-size: 200% 100%;
    z-index: 10001;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--color-accent-light, #60a5fa);
    border-radius: 0 2px 2px 0;
}

.loading-progress.active {
    animation: progressPulse 2s ease-in-out infinite, progressGradient 3s linear infinite;
}

@keyframes progressPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes progressGradient {
    0% { background-position: 0 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

/* ===== Notifications ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 420px;
    background: var(--color-dark-surface, #1e293b);
    border: 1px solid var(--color-dark-border, #475569);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    z-index: var(--z-toast);
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s ease;
    opacity: 0;
}

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

.notification--success {
    border-left: 4px solid var(--color-success, #10b981);
}

.notification--error {
    border-left: 4px solid var(--color-error, #ef4444);
}

.notification--warning {
    border-left: 4px solid var(--color-warning, #f59e0b);
}

.notification--info {
    border-left: 4px solid var(--color-info, #06b6d4);
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    gap: 1rem;
}

.notification-message {
    color: var(--color-text-primary, #f8fafc);
    font-size: 0.95rem;
    line-height: 1.5;
    flex: 1;
}

.notification-close {
    background: none;
    border: none;
    color: var(--color-text-secondary, #cbd5e1);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--color-dark-elevated, #334155);
    color: var(--color-text-primary, #f8fafc);
    transform: scale(1.1);
}

/* ===== Enhanced Confirm Modal ===== */
.confirm-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.confirm-modal.show {
    opacity: 1;
    visibility: visible;
}

.confirm-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
}

.confirm-dialog {
    position: relative;
    background: var(--color-dark-surface, #1e293b);
    border: 1px solid var(--color-dark-border, #475569);
    border-radius: 16px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    width: 90%;
    transform: scale(0.8) translateY(-20px);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.confirm-modal.show .confirm-dialog {
    transform: scale(1) translateY(0);
}

.confirm-content {
    padding: 2.5rem;
}

.confirm-message {
    color: var(--color-text-primary, #f8fafc);
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0 0 2.5rem 0;
    text-align: center;
}

.confirm-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.confirm-actions .btn {
    min-width: 100px;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

/* ===== Enhanced Tooltips ===== */
.tooltip {
    position: absolute;
    background: var(--color-dark-bg, #0f172a);
    color: var(--color-text-primary, #f8fafc);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    z-index: 9998;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.25s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-dark-border, #475569);
}

.tooltip.show {
    opacity: 1;
    transform: translateY(0);
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-dark-bg, #0f172a);
}

/* ===== Page Transition Enhancements ===== */

/* Page transition states */
.page-transitioning {
    pointer-events: none;
}

.page-loaded {
    animation: pageLoadFadeIn 0.5s ease-out;
}

@keyframes pageLoadFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Content fade-out during transitions */
.main-content,
main,
#main-content {
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.content-transitioning {
    opacity: 0 !important;
    transform: translateY(-10px) !important;
}

/* Enhanced link hover effects */
a:not([data-no-transition]) {
    transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
    position: relative;
    overflow: hidden;
}

a:not([data-no-transition]):hover {
    transform: translateY(-1px);
    color: var(--color-accent-light, #60a5fa);
    text-shadow: 0 0 8px var(--color-accent-light, #60a5fa);
}

/* Ripple effect for link clicks */
.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: var(--color-accent-light, rgba(96, 165, 250, 0.3));
    transform: scale(0);
    animation: ripple 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(3);
        opacity: 0;
    }
}

/* Form loading states */
.btn.loading,
button.loading,
input[type="submit"].loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.loading::after,
button.loading::after,
input[type="submit"].loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: var(--color-accent, #3b82f6);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Page load animations */
[data-animate-on-load] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-loaded [data-animate-on-load] {
    opacity: 1;
    transform: translateY(0);
}

.page-loaded [data-animate-on-load]:nth-child(1) { animation-delay: 0s; }
.page-loaded [data-animate-on-load]:nth-child(2) { animation-delay: 0.1s; }
.page-loaded [data-animate-on-load]:nth-child(3) { animation-delay: 0.2s; }
.page-loaded [data-animate-on-load]:nth-child(4) { animation-delay: 0.3s; }
.page-loaded [data-animate-on-load]:nth-child(5) { animation-delay: 0.4s; }

/* Header scroll effects */
.site-header,
header,
.main-header {
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.site-header.scrolled,
header.scrolled,
.main-header.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-dark-border, #475569);
}

.site-header.header-hidden,
header.header-hidden,
.main-header.header-hidden {
    transform: translateY(-100%);
}

/* Disable transitions class */
.no-transitions,
.no-transitions * {
    animation: none !important;
    transition: none !important;
}

/* Navigation menu enhancements */
.nav-menu a,
.main-nav a,
.navigation a {
    position: relative;
    transition: all 0.3s ease;
    color: var(--color-text-secondary, #cbd5e1);
}

.nav-menu a::before,
.main-nav a::before,
.navigation a::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-tech, linear-gradient(90deg, #3b82f6, #8b5cf6));
    transition: width 0.3s ease;
}

.nav-menu a:hover::before,
.main-nav a:hover::before,
.navigation a:hover::before,
.nav-menu a.active::before,
.main-nav a.active::before,
.navigation a.active::before {
    width: 100%;
}

.nav-menu a:hover,
.main-nav a:hover,
.navigation a:hover,
.nav-menu a.active,
.main-nav a.active,
.navigation a.active {
    color: var(--color-text-primary, #f8fafc);
}

/* Button enhancements */
.btn,
button:not(.notification-close) {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    background: var(--color-dark-elevated, #334155);
    color: var(--color-text-primary, #f8fafc);
    border: 1px solid var(--color-dark-border, #475569);
}

.btn:hover,
button:not(.notification-close):hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    background: var(--color-accent, #3b82f6);
    border-color: var(--color-accent, #3b82f6);
}

.btn:active,
button:not(.notification-close):active {
    transform: translateY(0);
}

/* Card hover effects */
.card,
.post-card,
.news-card {
    transition: all 0.3s ease;
    background: var(--color-dark-surface, #1e293b);
    border: 1px solid var(--color-dark-border, #475569);
}

.card:hover,
.post-card:hover,
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--color-accent, #3b82f6);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .loading-spinner {
        padding: 2rem;
        gap: 1rem;
        max-width: 280px;
    }

    .spinner {
        width: 40px;
        height: 40px;
    }

    .loading-text {
        font-size: 0.9rem;
    }

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

    .confirm-dialog {
        margin: 1rem;
        width: calc(100% - 2rem);
    }

    .confirm-content {
        padding: 2rem;
    }

    /* Reduce motion on mobile for performance */
    a:not([data-no-transition]):hover {
        transform: none;
        text-shadow: none;
    }
}

@media (max-width: 480px) {
    .loading-spinner {
        padding: 1.5rem;
        border-radius: 12px;
    }

    .confirm-content {
        padding: 1.5rem;
    }

    .confirm-actions {
        flex-direction: column;
    }

    .confirm-actions .btn {
        width: 100%;
    }
}

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

    .tooltip {
        border-width: 2px;
    }

    .loading-spinner {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .navigation-loading,
    .notification,
    .confirm-modal,
    .tooltip,
    .ripple-effect,
    .loading-progress,
    a,
    .btn,
    button,
    .card,
    [data-animate-on-load] {
        animation: none !important;
        transition: none !important;
    }

    .loading-progress {
        animation: none !important;
        background: var(--color-accent, #3b82f6) !important;
    }

    .spinner {
        animation: none !important;
        border-top-color: transparent;
        border-right-color: var(--color-accent, #3b82f6);
    }
}

/* ===== Enhanced Navigation Dropdown ===== */
.nav-item.has-dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    min-width: 200px;
    background: var(--color-dark-surface);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
    backdrop-filter: blur(var(--blur-md));
}

.nav-item.has-dropdown:hover .dropdown-menu,
.nav-item.has-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ===== Mobile Navigation Overlay ===== */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-dark-bg);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-nav-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ===== User Menu Enhancements ===== */
.user-menu .user-dropdown {
    z-index: var(--z-dropdown);
}

/* ===== Notification System ===== */
.notification-stack {
    position: fixed;
    top: 90px;
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    max-width: 400px;
    width: 100%;
    pointer-events: none;
}

/* ===== Enhanced Loading States ===== */
.page-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(var(--blur-sm));
}

/* ===== Search Dropdown ===== */
.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-dark-surface);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-xs);
    z-index: var(--z-popover);
    box-shadow: var(--shadow-xl);
}