/* =========================================
   Echo — Montero.app Style Integration
========================================= */

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    color: var(--mn-text);
    font-family: Inter, "Segoe UI", Roboto, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(200, 162, 255, 0.22), transparent 30%),
        radial-gradient(circle at top right, rgba(139, 92, 246, 0.10), transparent 24%),
        linear-gradient(
            180deg,
            var(--mn-bg-1) 0%,
            var(--mn-bg-2) 42%,
            var(--mn-bg-3) 100%
        );
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* =========================================
   Layout
========================================= */

.echo-shell {
    width: min(100%, 1100px);
    margin: 0 auto;
    min-height: 100vh;
    padding:
        clamp(1rem, 3vw, 2rem)
        clamp(1rem, 3vw, 2rem)
        1.5rem;
    display: flex;
    flex-direction: column;
}

.echo-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =========================================
   Hero / Message Panel
========================================= */

.echo-panel {
    width: 100%;
    max-width: 920px;
    position: relative;
    overflow: hidden;

    padding:
        clamp(1.4rem, 3vw, 2.6rem);

    border-radius: calc(var(--mn-radius) + 4px);

    background:
        linear-gradient(
            180deg,
            rgba(255,255,255,0.84),
            rgba(255,255,255,0.68)
        );

    border: 1px solid var(--mn-border);

    box-shadow: var(--mn-shadow);

    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);

    text-align: center;
}

.echo-panel::before {
    content: "";
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 4px;

    background:
        linear-gradient(
            90deg,
            #c8a2ff 0%,
            #8b5cf6 52%,
            #6d28d9 100%
        );
}

/* =========================================
   Top Info
========================================= */

.top-info {
    margin-bottom: 2rem;
    text-align: center;
}

.small-text {
    color: var(--mn-muted);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* =========================================
   Message Area
========================================= */

.main-message {
    transition: all 0.5s ease-in-out;
}

.message-text {
    margin: 0;

    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.04em;

    color: #261c35;

    transition: all 0.5s ease-in-out;
}

.message-tags {
    margin:
        1.2rem auto
        0.6rem;

    width: fit-content;

    padding:
        0.42rem
        0.8rem;

    border-radius: 999px;

    background: rgba(139, 92, 246, 0.10);

    color: var(--mn-accent-dark);

    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.message-author {
    margin-top: 1rem;

    color: var(--mn-muted);

    font-size: 1.08rem;
    font-weight: 600;
}

/* =========================================
   Fade Animations
========================================= */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(16px);
    }
}

.fade-in {
    animation: fadeIn 0.7s ease-out forwards;
}

.fade-out {
    animation: fadeOut 0.7s ease-out forwards;
}

/* =========================================
   Footer
========================================= */

.echo-footer {
    margin-top: 2rem;

    padding:
        1rem
        1.1rem
        1.15rem;

    border-radius: 18px;

    background: rgba(255, 255, 255, 0.62);

    border: 1px solid var(--mn-border);

    box-shadow: 0 12px 28px rgba(76, 29, 149, 0.06);

    text-align: center;

    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.echo-footer p {
    margin: 0;

    color: var(--mn-muted);

    font-size: 0.9rem;
}

.echo-footer a {
    color: var(--mn-accent-dark);
    font-weight: 700;
    text-decoration: none;
}

.echo-footer a:hover,
.echo-footer a:focus-visible {
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

/* =========================================
   MNID
========================================= */

#mnid {
    margin-top: 0.55rem;

    font-size: 0.78rem;
    color: var(--mn-muted);

    overflow-wrap: anywhere;
}

.mnid-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.mnid-link:hover #mnid,
.mnid-link:focus-visible #mnid {
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

/* =========================================
   Responsive
========================================= */

@media (max-width: 720px) {

    .echo-panel {
        padding:
            1.2rem
            1rem;
    }

    .message-text {
        font-size: clamp(1.7rem, 8vw, 2.8rem);
    }

    .message-author {
        font-size: 1rem;
    }

    .message-tags {
        font-size: 0.75rem;
    }
}

/* =========================================
   Echo About Page
========================================= */

.echo-about-main {
    align-items: flex-start;
    padding-top: clamp(1rem, 3vw, 2rem);
}

.echo-about-panel {
    max-width: 1040px;
    text-align: left;
}

.echo-about-header {
    text-align: center;
    margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.echo-about-header .message-text {
    margin-top: 0.65rem;
}

.echo-about-header .message-author {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.echo-about-content {
    display: grid;
    gap: 1rem;
}

.echo-about-section {
    border-radius: 20px;
    border: 1px solid rgba(124, 58, 237, 0.12);
    background: rgba(255, 255, 255, 0.62);
    padding: clamp(1rem, 2vw, 1.25rem);
}

.echo-about-section p {
    margin: 0;
    color: var(--mn-muted);
    font-size: 0.98rem;
}

.echo-about-section strong {
    color: #261c35;
}

.echo-link-box {
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    border-radius: 18px;
    color: var(--mn-accent-dark);
    background: rgba(139, 92, 246, 0.10);
    border: 1px solid rgba(124, 58, 237, 0.12);
    font-weight: 800;
}

.echo-about-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.echo-about-card,
.echo-facts-card {
    border-radius: 20px;
    border: 1px solid rgba(124, 58, 237, 0.12);
    background: rgba(255, 255, 255, 0.62);
    padding: clamp(1rem, 2vw, 1.25rem);
}

.echo-about-card h2 {
    margin: 0 0 0.55rem;
    font-size: 1.05rem;
    color: #281f37;
    letter-spacing: -0.01em;
}

.echo-about-card p {
    margin: 0 0 0.75rem;
    color: var(--mn-muted);
    font-size: 0.95rem;
}

.echo-about-card p:last-child {
    margin-bottom: 0;
}

.echo-about-card ul {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--mn-muted);
    font-size: 0.95rem;
}

.echo-about-card li + li {
    margin-top: 0.35rem;
}

.echo-facts-card {
    display: grid;
    gap: 0.75rem;
}

.echo-fact {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 0.75rem;
    align-items: start;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(124, 58, 237, 0.10);
}

.echo-fact:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.echo-fact span {
    color: var(--mn-muted);
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.echo-fact strong {
    color: #261c35;
    font-size: 0.95rem;
    overflow-wrap: anywhere;
}

.echo-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 0.35rem;
}

.echo-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.72rem 1rem;
    border-radius: 999px;
    color: #fff;
    background: linear-gradient(135deg, var(--mn-accent), var(--mn-accent-dark));
    box-shadow: 0 12px 22px rgba(109, 40, 217, 0.18);
    font-weight: 800;
    text-decoration: none;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background 0.2s ease;
}

.echo-button:hover,
.echo-button:focus-visible {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 16px 28px rgba(109, 40, 217, 0.24);
    outline: none;
}

.echo-button.secondary {
    color: var(--mn-accent-dark);
    background: rgba(139, 92, 246, 0.11);
    box-shadow: none;
    border: 1px solid rgba(124, 58, 237, 0.14);
}

.echo-button.secondary:hover,
.echo-button.secondary:focus-visible {
    color: var(--mn-accent-dark);
    background: rgba(139, 92, 246, 0.16);
    box-shadow: 0 12px 24px rgba(76, 29, 149, 0.08);
}

@media (max-width: 760px) {
    .echo-about-grid {
        grid-template-columns: 1fr;
    }

    .echo-fact {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .echo-action-row {
        display: grid;
        grid-template-columns: 1fr;
    }
}