/* ── Phase 5: UI Polish & Animations ────────────────────────────── */

/* Smooth page transitions */
body {
    animation: fadeInPage 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInPage {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* Staggered reveal animation for cards */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-on-scroll:nth-child(1) { transition-delay: 0.05s; }
.reveal-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.reveal-on-scroll:nth-child(3) { transition-delay: 0.15s; }
.reveal-on-scroll:nth-child(4) { transition-delay: 0.2s; }
.reveal-on-scroll:nth-child(5) { transition-delay: 0.25s; }
.reveal-on-scroll:nth-child(6) { transition-delay: 0.3s; }

/* Premium hover elevation utility */
.hover-elevate {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}
.hover-elevate:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl) !important;
    border-color: var(--brand) !important;
}

/* Success Checkmark Animation */
@keyframes drawCheckmark {
    0% { stroke-dashoffset: 48; }
    100% { stroke-dashoffset: 0; }
}
@keyframes scaleSuccess {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}
.success-checkmark-svg {
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: drawCheckmark 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}
.success-circle {
    animation: scaleSuccess 0.4s ease-in-out;
}

/* Button micro-interactions */
.btn {
    transition: all 0.2s cubic-bezier(.2, .8, .2, 1);
    position: relative;
    overflow: hidden;
}

.btn:active {
    transform: scale(0.97);
}

.btn-brand::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.btn-brand:hover::after {
    opacity: 1;
}

/* Card hover lift effect */
.glass-panel {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.glass-panel:hover {
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

/* Prevent hover effect on nav and footer */
.glass-nav:hover,
.footer-card:hover {
    transform: none;
    box-shadow: var(--shadow-md);
}

/* Form input focus animations */
.form-control,
.form-select {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Toast notification system */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast-item {
    animation: slideInRight 0.3s ease both;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    background: var(--bg-elevated-strong);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(16px);
    font-size: 0.9rem;
    max-width: 360px;
}

.toast-item.success { border-left: 4px solid var(--success); }
.toast-item.error   { border-left: 4px solid var(--danger); }
.toast-item.info    { border-left: 4px solid var(--brand); }

/* Skeleton loading placeholder */
.skeleton {
    background: linear-gradient(90deg, var(--surface-2) 25%, var(--bg-elevated) 50%, var(--surface-2) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
    min-height: 1rem;
}

@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Smooth link/nav transitions */
.nav-link,
.navbar-brand {
    transition: color 0.2s ease, opacity 0.2s ease;
}

/* Table row hover */
.modern-table tbody tr:hover {
    background: rgba(91, 108, 255, 0.04);
}

/* Pricing card hover */
.pricing-card {
    transition: transform 0.25s cubic-bezier(.2, .8, .2, 1), box-shadow 0.25s ease;
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12) !important;
}

/* Alert dismissal animation */
.alert {
    animation: fadeInUp 0.3s ease both;
}