/* Animated popup alerts (Flask flash messages)
   Rendered by: templates/partials/flash_notices.html

   - Floating "toast" stack (bottom-right)
   - Smooth fade-in for all
   - Gentle shake for failure
   - Glowing borders for success/failure
*/

.flash-stack[data-flash-stack] {
    position: fixed;
    right: 18px;
    top: calc(18px + env(safe-area-inset-top, 0px));
    z-index: 2500;

    display: flex;
    flex-direction: column;
    gap: 10px;

    max-width: min(420px, calc(100vw - 36px));
    pointer-events: none;
}

.flash-stack[data-flash-stack] .flash {
    pointer-events: auto;

    position: relative;
    transform-origin: 90% 0%;
    animation: flashIn 0.34s cubic-bezier(.2, .9, .2, 1) both;
    will-change: transform, opacity, filter;

    /* Override base flash backgrounds for a modern floating toast look. */
    border-radius: 16px;
    padding: 12px 14px 18px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(148, 163, 184, 0.38);
    box-shadow: 0 18px 44px rgba(2, 6, 23, 0.18), 0 4px 14px rgba(2, 6, 23, 0.08);
}

.flash-stack[data-flash-stack] .flash-inner {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.dark-mode .flash-stack[data-flash-stack] .flash,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash {
    background: rgba(15, 23, 42, 0.66);
    border-color: rgba(148, 163, 184, 0.24);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.42), 0 4px 14px rgba(0, 0, 0, 0.24);
}

.dark-mode .flash-stack[data-flash-stack] .flash-success,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-success {
    background: linear-gradient(135deg, rgba(20, 83, 45, 0.46), rgba(15, 23, 42, 0.70));
    border-color: rgba(217, 119, 87, 0.28) !important;
    color: #bbf7d0;
}

.dark-mode .flash-stack[data-flash-stack] .flash-danger,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-danger {
    background: linear-gradient(135deg, rgba(127, 29, 29, 0.38), rgba(15, 23, 42, 0.72));
    border-color: rgba(239, 68, 68, 0.26) !important;
    color: #fecaca;
}

.dark-mode .flash-stack[data-flash-stack] .flash-warning,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-warning {
    background: linear-gradient(135deg, rgba(146, 64, 14, 0.34), rgba(15, 23, 42, 0.72));
    border-color: rgba(245, 158, 11, 0.26) !important;
    color: #fde68a;
}

.dark-mode .flash-stack[data-flash-stack] .flash-info,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-info {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.30), rgba(15, 23, 42, 0.72));
    border-color: rgba(59, 130, 246, 0.22) !important;
    color: #bfdbfe;
}

.flash-stack[data-flash-stack] .flash::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    border-radius: 16px 0 0 16px;
    background: currentColor;
    opacity: 0.22;
    pointer-events: none;
}

.flash-stack[data-flash-stack] .flash-progress {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 10px;
    height: 3px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(15, 23, 42, 0.10);
    pointer-events: none;
}

.dark-mode .flash-stack[data-flash-stack] .flash-progress,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-progress {
    background: rgba(148, 163, 184, 0.20);
}

.flash-stack[data-flash-stack] .flash-progress::after {
    content: "";
    position: absolute;
    inset: 0;
    background: currentColor;
    opacity: 0.55;
    transform-origin: left;
    transform: scaleX(1);
    animation: toastProgress var(--toast-duration, 3000ms) linear forwards;
}

.flash-stack[data-flash-stack] .flash:hover .flash-progress::after,
.flash-stack[data-flash-stack] .flash:focus-within .flash-progress::after {
    animation-play-state: paused;
}

.flash-stack[data-flash-stack] .flash.is-leaving .flash-progress::after {
    animation: none;
    transform: scaleX(0);
}

.flash-stack[data-flash-stack] .flash-icon {
    width: 30px;
    height: 30px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    font-size: 1.05rem;
    line-height: 1;
    margin-top: 1px;

    background: rgba(15, 23, 42, 0.06);
    border: 1px solid rgba(15, 23, 42, 0.10);
}

.flash-stack[data-flash-stack] .flash-icon i {
    font-size: 1rem;
    line-height: 1;
}

.dark-mode .flash-stack[data-flash-stack] .flash-icon,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-icon {
    background: rgba(148, 163, 184, 0.14);
    border-color: rgba(148, 163, 184, 0.22);
}

.flash-stack[data-flash-stack] .flash-text {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.flash-stack[data-flash-stack] .flash-title {
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    line-height: 1.2;
}

.flash-stack[data-flash-stack] .flash-message {
    font-size: 0.92rem;
    line-height: 1.45;
    opacity: 0.9;
}

.flash-stack[data-flash-stack] .flash-success {
    border-color: rgba(182, 90, 61, 0.35) !important;
    background: linear-gradient(135deg, rgba(236, 253, 245, 0.98), rgba(240, 253, 250, 0.90));
    color: #14532d;
    box-shadow:
        0 18px 44px rgba(2, 6, 23, 0.16),
        0 4px 14px rgba(2, 6, 23, 0.08),
        0 0 0 1px rgba(182, 90, 61, 0.12);
}

.flash-stack[data-flash-stack] .flash-danger {
    border-color: rgba(220, 38, 38, 0.36) !important;
    background: linear-gradient(135deg, rgba(254, 242, 242, 0.98), rgba(255, 247, 237, 0.90));
    color: #7f1d1d;
    box-shadow:
        0 18px 44px rgba(2, 6, 23, 0.16),
        0 4px 14px rgba(2, 6, 23, 0.08),
        0 0 0 1px rgba(220, 38, 38, 0.12);
}

.flash-stack[data-flash-stack] .flash-warning {
    border-color: rgba(245, 158, 11, 0.40) !important;
    background: linear-gradient(135deg, rgba(255, 251, 235, 0.98), rgba(255, 247, 237, 0.92));
    color: #92400e;
}

.flash-stack[data-flash-stack] .flash-info {
    border-color: rgba(59, 130, 246, 0.34) !important;
    background: linear-gradient(135deg, rgba(239, 246, 255, 0.98), rgba(255, 255, 255, 0.92));
    color: #1d4ed8;
}

.flash-stack[data-flash-stack] .flash-success .flash-icon {
    background: rgba(182, 90, 61, 0.14);
    border-color: rgba(182, 90, 61, 0.26);
}

.flash-stack[data-flash-stack] .flash-danger .flash-icon {
    background: rgba(220, 38, 38, 0.12);
    border-color: rgba(220, 38, 38, 0.26);
}

.flash-stack[data-flash-stack] .flash-warning .flash-icon {
    background: rgba(245, 158, 11, 0.14);
    border-color: rgba(245, 158, 11, 0.26);
}

.flash-stack[data-flash-stack] .flash-info .flash-icon {
    background: rgba(59, 130, 246, 0.14);
    border-color: rgba(59, 130, 246, 0.24);
}

.dark-mode .flash-stack[data-flash-stack] .flash-success .flash-icon,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-success .flash-icon {
    background: rgba(217, 119, 87, 0.16);
    border-color: rgba(217, 119, 87, 0.28);
}

.dark-mode .flash-stack[data-flash-stack] .flash-danger .flash-icon,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-danger .flash-icon {
    background: rgba(239, 68, 68, 0.16);
    border-color: rgba(239, 68, 68, 0.26);
}

.dark-mode .flash-stack[data-flash-stack] .flash-warning .flash-icon,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-warning .flash-icon {
    background: rgba(245, 158, 11, 0.18);
    border-color: rgba(245, 158, 11, 0.28);
}

.dark-mode .flash-stack[data-flash-stack] .flash-info .flash-icon,
html.auth-panel-dark .flash-stack[data-flash-stack] .flash-info .flash-icon {
    background: rgba(59, 130, 246, 0.18);
    border-color: rgba(59, 130, 246, 0.26);
}

.flash-stack[data-flash-stack] .flash-danger .flash-inner {
    animation: flashShake 0.46s ease-in-out 0.12s both;
}

@media (max-width: 520px) {
    .flash-stack[data-flash-stack] {
        right: 12px;
        left: 12px;
        top: calc(12px + env(safe-area-inset-top, 0px));
        max-width: none;
    }
}

.flash-dismiss {
    appearance: none;
    border: 0;
    background: transparent;
    color: currentColor;
    cursor: pointer;
    opacity: 0.65;

    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 0;
    margin-left: 6px;
    font-size: 1rem;
    line-height: 1;
    border-radius: 999px;

    transition:
        opacity 0.15s ease,
        background-color 0.15s ease,
        transform 0.15s ease;
}

.flash-dismiss i {
    font-size: 0.95rem;
    line-height: 1;
}

.flash-dismiss:hover {
    opacity: 1;
    background: rgba(15, 23, 42, 0.06);
}

.dark-mode .flash-dismiss:hover,
html.auth-panel-dark .flash-dismiss:hover {
    background: rgba(148, 163, 184, 0.12);
}

.flash-dismiss:active {
    transform: scale(0.96);
}

.flash-dismiss:focus {
    outline: 2px solid rgba(59, 130, 246, 0.55);
    outline-offset: 2px;
}

.flash-stack[data-flash-stack] .flash.is-leaving {
    animation: flashOut 0.18s ease-in both;
}

@keyframes flashIn {
    from {
        opacity: 0;
        transform: translateY(-12px) scale(0.98);
        filter: blur(2px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes flashOut {
    to {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
        filter: blur(2px);
    }
}

@keyframes flashShake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-4px); }
    40% { transform: translateX(4px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

@keyframes toastProgress {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

@media (prefers-reduced-motion: reduce) {
    .flash-stack[data-flash-stack] .flash {
        animation: none !important;
        filter: none !important;
        transform: none !important;
    }
    .flash-stack[data-flash-stack] .flash.is-leaving {
        animation: none !important;
    }
    .flash-stack[data-flash-stack] .flash-progress::after {
        animation: none !important;
    }
    .flash-stack[data-flash-stack] .flash-danger .flash-inner {
        animation: none !important;
        transform: none !important;
    }
}

/* =========================================
   Premium Feedback Cards (Inline Use)
   Markup: templates/partials/premium_feedback_card.html
========================================= */

.feedback-card {
    --radius: 18px;
    --shadow: 0 18px 50px rgba(2, 6, 23, 0.18), 0 6px 18px rgba(2, 6, 23, 0.10);

    position: relative;
    overflow: hidden;
    display: flex;
    gap: 12px;
    align-items: flex-start;

    padding: 16px 18px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);

    color: rgba(255, 255, 255, 0.94);
}

.feedback-card::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(1200px 140px at 18% 0%, rgba(255, 255, 255, 0.38), transparent 58%),
        radial-gradient(900px 240px at 92% 120%, rgba(255, 255, 255, 0.20), transparent 56%);
    mix-blend-mode: overlay;
    opacity: 0.75;
}

.feedback-card__icon {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.22);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.feedback-card__body {
    min-width: 0;
}

.feedback-card__title {
    font-weight: 800;
    letter-spacing: 0.2px;
    font-size: 1rem;
    line-height: 1.1;
}

.feedback-card__message {
    margin-top: 6px;
    font-size: 0.92rem;
    line-height: 1.45;
    color: rgba(255, 255, 255, 0.90);
}

.feedback-card--success {
    background: linear-gradient(135deg, #b65a3d 0%, #d97757 42%, #e5a78c 100%);
}

.feedback-card--error {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 46%, #f97316 112%);
}