:root {
    --bg: #060814;
    --bg-2: #0a1024;
    --ink: #e6ecf5;
    --ink-dim: #8a96b0;
    --ink-soft: #b8c2d4;
    --cyan: #4fd1ff;
    --leaf: #5fb380;
    --leaf-soft: #4a9f6f;
    --leaf-glow: rgba(95, 179, 128, 0.35);
    --line: rgba(255, 255, 255, 0.07);
    --line-strong: rgba(255, 255, 255, 0.13);
    --card: rgba(20, 28, 50, 0.5);
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
    --font-serif: 'Cormorant Garamond', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Arka plan */
.bg-grid {
    position: fixed; inset: 0; z-index: -2;
    background-image:
        linear-gradient(rgba(79, 209, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 209, 255, 0.035) 1px, transparent 1px);
    background-size: 72px 72px;
    pointer-events: none;
}
.bg-glow {
    position: fixed; inset: 0; z-index: -1;
    background:
        radial-gradient(circle at 18% 8%, rgba(79, 209, 255, 0.07), transparent 55%),
        radial-gradient(circle at 82% 92%, rgba(95, 179, 128, 0.05), transparent 55%);
    pointer-events: none;
}

/* Üst */
.top {
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 32px;
    border-bottom: 1px solid var(--line);
}
.brand {
    display: flex; align-items: center; gap: 12px;
}
.brand-mark {
    width: 26px; height: 26px;
    color: var(--leaf);
    flex-shrink: 0;
    filter: drop-shadow(0 0 6px var(--leaf-glow));
}
.brand-text {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--ink);
}
.lang { display: flex; gap: 8px; }
.lang-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-dim);
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s;
}
.lang-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.lang-btn.active { color: var(--leaf); border-color: var(--leaf); }

/* Sahne */
.stage {
    max-width: 720px;
    margin: 0 auto;
    padding: 96px 24px 96px;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 72px;
    position: relative;
}
.tagline-top {
    font-size: 10px;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 24px;
    opacity: 0.9;
}
.tagline-main {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(30px, 5vw, 48px);
    letter-spacing: 1.5px;
    margin-bottom: 24px;
    color: var(--ink);
    line-height: 1.25;
}
.intro {
    color: var(--ink-soft);
    font-size: 14px;
    max-width: 520px;
    margin: 0 auto 40px;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 16px;
    line-height: 1.7;
    opacity: 0.85;
}
.hero-divider {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, var(--line-strong), transparent);
    margin: 0 auto;
}

/* Gökyüzü */
.sky {
    text-align: center;
    font-size: 12px;
    color: var(--ink-dim);
    margin-bottom: 20px;
    min-height: 20px;
    letter-spacing: 1px;
}
.sky-loading { opacity: 0.4; }
.sky .sky-item { margin: 0 14px; }
.sky .sky-item strong {
    color: var(--leaf);
    font-weight: 400;
    margin-left: 6px;
}

/* Uğrak */
.visit {
    text-align: center;
    color: var(--ink-soft);
    margin-bottom: 56px;
    min-height: 22px;
    font-style: italic;
    font-family: var(--font-serif);
    font-size: 15px;
    opacity: 0.8;
}

/* Kart */
.card {
    background: var(--card);
    border: 1px solid var(--line-strong);
    backdrop-filter: blur(14px);
    padding: 28px 28px 24px;
    margin-bottom: 88px;
    position: relative;
}
.card::before {
    content: '';
    position: absolute;
    left: -1px; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom,
        var(--leaf) 0%,
        var(--cyan) 50%,
        transparent 100%);
    opacity: 0.7;
}
#moment-input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.7;
    resize: vertical;
    min-height: 88px;
    outline: none;
}
#moment-input::placeholder {
    color: var(--ink-dim);
    opacity: 0.55;
    font-style: italic;
}
.card-footer {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 20px; padding-top: 16px;
    border-top: 1px solid var(--line);
}
.counter {
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 1px;
}
#submit-btn {
    background: transparent;
    border: 1px solid var(--leaf);
    color: var(--leaf);
    padding: 9px 28px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.25s;
    text-transform: uppercase;
}
#submit-btn:hover:not(:disabled) {
    background: var(--leaf);
    color: var(--bg);
    box-shadow: 0 0 16px var(--leaf-glow);
}
#submit-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.form-msg {
    margin-top: 14px;
    min-height: 18px;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 14px;
    color: var(--leaf);
    line-height: 1.5;
}
.form-msg.error { color: #d88a8a; }

/* Duvar */
.wall-head {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 28px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}
.wall-title-wrap {
    display: flex; flex-direction: column; gap: 2px;
}
.wall-head h2 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 20px;
    letter-spacing: 3px;
    color: var(--ink-soft);
}
.wall-subtitle {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 2px;
    opacity: 0.7;
}
.ghost {
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-family: var(--font-mono);
    font-size: 11px;
    cursor: pointer;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.2s;
}
.ghost:hover { color: var(--leaf); }
.wall-list { list-style: none; }
.wall-empty {
    text-align: center;
    color: var(--ink-dim);
    padding: 40px 0;
    font-style: italic;
    font-family: var(--font-serif);
    font-size: 16px;
}
.moment {
    padding: 18px 0 18px 18px;
    border-bottom: 1px solid var(--line);
    position: relative;
    animation: fadeIn 0.5s ease-out;
}
.moment::before {
    content: '';
    position: absolute;
    left: 0; top: 20px; bottom: 20px;
    width: 1px;
    background: var(--line-strong);
    transition: background 0.4s;
}
.moment:hover::before { background: var(--leaf); }

/* Tecelli animasyonu: yeni AN geldiğinde solu parlar, söner */
.moment.is-new::before {
    animation: tecelli 1.4s ease-out;
}
@keyframes tecelli {
    0%   { background: var(--line-strong); box-shadow: none; }
    20%  { background: var(--leaf); box-shadow: 0 0 12px var(--leaf-glow); }
    100% { background: var(--line-strong); box-shadow: none; }
}

.moment-text {
    color: var(--ink);
    font-size: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin-bottom: 8px;
    line-height: 1.65;
}
.moment-time {
    font-size: 10px;
    color: var(--ink-dim);
    letter-spacing: 1.5px;
    opacity: 0.65;
    text-transform: lowercase;
}

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

/* Alt */
.bottom {
    text-align: center;
    padding: 32px 24px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}
.footer-brand {
    font-size: 11px;
    color: var(--ink-dim);
    letter-spacing: 3px;
}
.footer-line {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 12px;
    color: var(--ink-dim);
    opacity: 0.55;
    letter-spacing: 1.5px;
}

/* Mobil */
@media (max-width: 640px) {
    .top { padding: 18px 20px; }
    .brand-text { font-size: 18px; letter-spacing: 2px; }
    .brand-mark { width: 22px; height: 22px; }
    .lang-btn { padding: 3px 7px; font-size: 10px; }
    .stage { padding: 56px 16px 64px; }
    .hero { margin-bottom: 56px; }
    .card { padding: 20px; margin-bottom: 64px; }
    .sky .sky-item { display: block; margin: 4px 0; }
    .visit { margin-bottom: 40px; }
    #submit-btn { padding: 8px 20px; letter-spacing: 2px; }
}