/* ============================================================
   SolarThrone — Site Foundation CSS
   Aesthetic: 1970s sci-fi paperback cover art
   ============================================================ */

/* ---------- 1. Custom Properties ---------- */
:root {
    /* Palette — from docs/art-direction.md */
    --space-deep:       #0a0e1a;
    --space-blue:       #0f1b3d;
    --nebula-purple:    #4a2c6e;
    --nebula-magenta:   #8a2452;
    --metal-gold:       #c9922e;
    --metal-orange:     #d4651a;
    --metal-chrome:     #e8e0d0;
    --atmo-teal:        #1a6b6a;
    --atmo-cyan:        #5bb8c4;
    --star-warm:        #f5ead0;
    --star-cool:        #d0e4f5;
    --alert-red:        #e04420;

    /* Typography */
    --font-display:     'Chakra Petch', sans-serif;
    --font-body:        'Inter', sans-serif;
    --font-mono:        'Space Mono', monospace;

    /* Spacing */
    --space-xs:   0.25rem;
    --space-sm:   0.5rem;
    --space-md:   1rem;
    --space-lg:   1.5rem;
    --space-xl:   2.5rem;

    /* Shared effects */
    --panel-bg:         rgba(10, 14, 26, 0.85);
    --panel-border:     rgba(201, 146, 46, 0.15);
    --panel-radius:     6px;
    --panel-shadow:     0 2px 12px rgba(0, 0, 0, 0.4);
    --focus-ring:       0 0 0 2px rgba(201, 146, 46, 0.5);
}


/* ---------- 2. Base / Reset ---------- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--space-deep) url('/images/bg-space.png') center center / cover no-repeat fixed;
    color: var(--metal-chrome);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Grain texture overlay — mimics printed paperback cover feel */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: url('/images/texture-grain.png') repeat;
    opacity: 0.04;
    pointer-events: none;
    z-index: 9999;
}

main {
    padding: 40px var(--space-lg) var(--space-xl);
    max-width: 1100px;
    margin: 0 auto;
}


/* ---------- 3. Typography — Element Selectors ---------- */
h1, h2, h3 {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-weight: 700;
    margin: 0 0 var(--space-md);
    line-height: 1.2;
}

h1 {
    font-size: 1.8rem;
    letter-spacing: 0.15em;
    color: var(--star-warm);
    text-shadow: 0 0 20px rgba(245, 234, 208, 0.15);
}

h2 {
    font-size: 1.2rem;
    letter-spacing: 0.12em;
    color: var(--metal-gold);
}

h3 {
    font-size: 1rem;
    letter-spacing: 0.1em;
    color: var(--metal-chrome);
}

p {
    margin: 0 0 var(--space-md);
    color: var(--metal-chrome);
    line-height: 1.6;
}

a {
    color: var(--metal-gold);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s, text-shadow 0.2s;
}

a:hover {
    color: #daa63a;
    text-shadow: 0 0 8px rgba(201, 146, 46, 0.3);
}

strong {
    color: var(--alert-red);
    font-weight: 600;
}

small {
    font-size: 0.85em;
    opacity: 0.7;
}


/* ---------- 4. Definition Lists ---------- */
dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-xs) var(--space-lg);
    margin: 0;
    padding: 0;
    align-items: baseline;
}

dt {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(232, 224, 208, 0.5);
    white-space: nowrap;
}

dd {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--star-warm);
}


/* ---------- 5. Tables ---------- */
table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--panel-radius);
    overflow: hidden;
    font-size: 0.9rem;
}

thead th {
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    color: var(--metal-chrome);
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 2px solid var(--metal-gold);
    background: rgba(15, 27, 61, 0.6);
}

tbody tr {
    transition: background 0.15s;
}

tbody tr:nth-child(odd) {
    background: rgba(10, 14, 26, 0.5);
}

tbody tr:nth-child(even) {
    background: rgba(15, 27, 61, 0.3);
}

tbody tr:hover {
    background: rgba(15, 27, 61, 0.5);
}

td {
    padding: var(--space-sm) var(--space-md);
    color: var(--metal-chrome);
    border-bottom: 1px solid rgba(232, 224, 208, 0.06);
    vertical-align: middle;
}


/* ---------- 6. Forms & Inputs ---------- */
label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(232, 224, 208, 0.6);
    display: block;
    margin-bottom: var(--space-xs);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select {
    background: var(--space-blue);
    border: 1px solid rgba(26, 107, 106, 0.3);
    border-radius: 4px;
    color: var(--metal-chrome);
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
select:focus {
    border-color: var(--metal-gold);
    box-shadow: var(--focus-ring);
}

/* Full-width inputs in form divs (Login, Register pages) */
form > div > input {
    width: 100%;
}

button {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: linear-gradient(180deg, #d4a03a 0%, #c9922e 50%, #b5801e 100%);
    color: var(--space-deep);
    border: none;
    border-radius: 4px;
    padding: var(--space-sm) var(--space-lg);
    cursor: pointer;
    transition: filter 0.2s, box-shadow 0.2s, transform 0.1s;
}

button:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 16px rgba(201, 146, 46, 0.3);
}

button:active {
    transform: translateY(1px);
    filter: brightness(0.95);
}

button:disabled {
    background: rgba(232, 224, 208, 0.1);
    color: rgba(232, 224, 208, 0.3);
    cursor: not-allowed;
    box-shadow: none;
    filter: none;
}

/* Inline forms inside table cells (Buy/Sell rows) */
td form {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0;
}

td form input[type="number"] {
    width: 4em;
    padding: 3px var(--space-sm);
    font-size: 0.85rem;
    text-align: center;
}

td form button {
    padding: 3px var(--space-sm);
    font-size: 0.7rem;
}

/* Checkbox styling */
input[type="checkbox"] {
    accent-color: var(--metal-gold);
}


/* ---------- 7. Sections as Panels ---------- */
main > section,
main > div > section,
#station-content > section,
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--panel-shadow);
}


/* ---------- 8. Footer ---------- */
footer {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    opacity: 0.4;
}

footer p {
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin: 0;
}


/* ---------- 9. Utility Classes ---------- */
.mono       { font-family: var(--font-mono); }
.text-gold  { color: var(--metal-gold); }
.text-muted { opacity: 0.5; }
.text-right { text-align: right; }
.text-success { color: var(--atmo-teal); }
.text-danger  { color: var(--alert-red); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.inline-form {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.badge {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 3px 10px;
    border-radius: 3px;
    background: rgba(232, 224, 208, 0.08);
    border: 1px solid rgba(232, 224, 208, 0.15);
    color: rgba(232, 224, 208, 0.6);
}


/* ---------- 9b. Alerts ---------- */
.alert {
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

.alert--error {
    background: rgba(224, 68, 32, 0.12);
    border: 1px solid rgba(224, 68, 32, 0.35);
    color: var(--alert-red);
}

.alert--success {
    background: rgba(26, 107, 106, 0.15);
    border: 1px solid rgba(26, 107, 106, 0.35);
    color: var(--atmo-cyan);
}


/* ---------- 10. Landing Page ---------- */

/* Hero */
.hero-landing {
    text-align: center;
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
    background:
        linear-gradient(180deg, transparent 0%, rgba(10, 14, 26, 0.7) 60%, var(--space-deep) 100%),
        url('/images/hero-landing.png') center top / cover no-repeat;
    border: none;
    border-radius: 0;
    box-shadow: none;
    margin: calc(-40px - var(--space-lg)) calc(-1 * var(--space-lg)) var(--space-lg);
    padding-top: 80px;
    padding-bottom: 60px;
}

.hero-landing h1 {
    font-size: 2.8rem;
    letter-spacing: 0.18em;
    color: var(--star-warm);
    text-shadow:
        0 0 40px rgba(245, 234, 208, 0.2),
        0 2px 8px rgba(0, 0, 0, 0.6);
    margin-bottom: var(--space-lg);
}

.hero-landing > p {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    font-size: 1.05rem;
    line-height: 1.7;
    color: rgba(232, 224, 208, 0.8);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

/* CTA button — prominent call to action */
.cta {
    display: inline-block;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    text-decoration: none;
    background: linear-gradient(180deg, #d4a03a 0%, #c9922e 50%, #b5801e 100%);
    color: var(--space-deep);
    padding: 14px 40px;
    border-radius: 4px;
    transition: filter 0.2s, box-shadow 0.2s, transform 0.1s;
    box-shadow: 0 2px 12px rgba(201, 146, 46, 0.3);
}

.cta:hover {
    filter: brightness(1.15);
    box-shadow: 0 4px 24px rgba(201, 146, 46, 0.45);
    color: var(--space-deep);
    text-shadow: none;
    transform: translateY(-1px);
}

.cta:active {
    transform: translateY(1px);
    filter: brightness(0.95);
}

.login-link {
    font-size: 0.85rem;
    color: rgba(232, 224, 208, 0.5);
}

/* Feature grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.feature {
    text-align: center;
}

.feature h2 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.feature p {
    font-size: 0.9rem;
    color: rgba(232, 224, 208, 0.7);
    margin: 0;
    line-height: 1.5;
}

/* How it works */
.how-it-works {
    text-align: center;
}

.how-it-works h2 {
    margin-bottom: var(--space-lg);
}

.steps {
    list-style: none;
    counter-reset: step;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.steps li {
    counter-increment: step;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.steps li::before {
    content: counter(step);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--metal-gold);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid rgba(201, 146, 46, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-bottom: var(--space-xs);
}

.steps li strong {
    font-family: var(--font-display);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--star-warm);
}

.steps li span {
    font-size: 0.9rem;
    color: rgba(232, 224, 208, 0.7);
    line-height: 1.5;
}

/* Welcome back (authenticated) */
.welcome-back {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
}

.welcome-back h1 {
    margin-bottom: var(--space-sm);
}

.welcome-back p {
    color: rgba(232, 224, 208, 0.7);
    margin-bottom: var(--space-lg);
}


/* ---------- 10b. Auth Card ---------- */
.auth-card {
    max-width: 420px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
}

.auth-card h1 {
    text-align: center;
}

.auth-card form > div {
    margin-bottom: var(--space-md);
    text-align: left;
}

.auth-card button[type="submit"] {
    width: 100%;
    margin-top: var(--space-sm);
}

.auth-footer {
    font-size: 0.85rem;
    color: rgba(232, 224, 208, 0.5);
    margin-top: var(--space-lg);
    margin-bottom: 0;
}

.auth-tagline {
    font-size: 1.05rem;
    color: var(--metal-gold);
    margin-bottom: var(--space-lg);
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--space-lg) var(--space-md);
    }
}


/* ---------- 11. Avatar Picker ---------- */
.avatar-saved-msg {
    color: var(--atmo-teal);
}

.avatar-saved-msg strong {
    color: var(--metal-gold);
}

.avatar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.avatar-form {
    margin: 0;
}

.avatar-option {
    all: unset;
    cursor: pointer;
    display: block;
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(232, 224, 208, 0.1);
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}

.avatar-option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.avatar-option:hover {
    border-color: rgba(201, 146, 46, 0.6);
    box-shadow: 0 0 16px rgba(201, 146, 46, 0.25);
    transform: scale(1.05);
}

.avatar-option--selected {
    border-color: var(--metal-gold);
    box-shadow:
        0 0 0 2px var(--space-deep),
        0 0 0 4px var(--metal-gold),
        0 0 20px rgba(201, 146, 46, 0.35);
}


/* ---------- 12. Responsive ---------- */
@media (max-width: 768px) {
    main {
        padding: 24px var(--space-md) var(--space-lg);
    }

    h1 { font-size: 1.4rem; }
    h2 { font-size: 1rem; }

    main > section,
    main > div > section,
    #station-content > section,
    .panel {
        padding: var(--space-md);
    }

    /* Stack dt/dd vertically on narrow screens */
    dl {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    dd {
        margin-bottom: var(--space-sm);
    }

    /* Horizontal scroll for wide tables */
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    thead, tbody, tr {
        display: revert;
    }

    /* Landing hero responsive */
    .hero-landing {
        margin-left: calc(-1 * var(--space-md));
        margin-right: calc(-1 * var(--space-md));
        padding: 60px var(--space-md) 40px;
    }

    .hero-landing h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.2rem; }

    main {
        padding: 16px var(--space-sm) var(--space-md);
    }

    .hero-landing {
        margin-left: calc(-1 * var(--space-sm));
        margin-right: calc(-1 * var(--space-sm));
        padding: 48px var(--space-sm) 32px;
    }

    .hero-landing h1 {
        font-size: 1.5rem;
        letter-spacing: 0.1em;
    }

    .hero-landing > p {
        font-size: 0.9rem;
    }

    .badge {
        font-size: 0.6rem;
        padding: 2px 6px;
    }

    .cta {
        padding: 12px 28px;
        font-size: 0.9rem;
    }

    .steps {
        grid-template-columns: 1fr;
    }
}