/* ==========================================================================
   1. Fonts & Variables
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Exo+2:wght@300;400;600&display=swap');

:root {
    --color-bg-dark: #020408;
    --color-bg-medium: #0A0C10;
    --color-surface: #10141C;
    --color-border: #2A3B47;
    --color-text-primary: #E6F1FF;
    --color-text-secondary: #7B8C9D;
    --color-accent-cyan: #00E5FF;
    --color-accent-lime: #A8FF00;
    --glow-cyan: 0 0 5px var(--color-accent-cyan), 0 0 10px var(--color-accent-cyan), 0 0 20px rgba(0, 229, 255, 0.5);
    --glow-lime: 0 0 5px var(--color-accent-lime), 0 0 10px var(--color-accent-lime), 0 0 20px rgba(168, 255, 0, 0.5);
}

/* ==========================================================================
   2. Base Styles & Reset
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Exo 2', sans-serif;
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ==========================================================================
   3. Layout & Background
   ========================================================================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 0;
}

#animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        linear-gradient(to bottom, rgba(2, 4, 8, 0) 0%, var(--color-bg-dark) 100%),
        radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.1) 0%, transparent 50%);
    animation: pulse-glow 10s infinite alternate;
}

@keyframes pulse-glow {
    from { opacity: 0.8; }
    to { opacity: 1; }
}

/* ==========================================================================
   4. Header & Navigation
   ========================================================================== */
header {
    text-align: center;
    margin-bottom: 3rem;
    animation: slide-down 0.8s ease-out;
}

.site-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.2em;
    text-shadow: var(--glow-cyan);
    color: var(--color-accent-cyan);
}

.site-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
}

nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: slide-up 0.8s ease-out;
}

.tab-button {
    font-family: 'Orbitron', sans-serif;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tab-button:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-accent-cyan);
    transition: width 0.3s ease;
    box-shadow: var(--glow-cyan);
}

.tab-button:hover, .tab-button.active {
    color: var(--color-text-primary);
    border-color: var(--color-accent-cyan);
    text-shadow: 0 0 5px var(--color-accent-cyan);
}

.tab-button.active:before {
    width: 100%;
}

/* ==========================================================================
   5. Components
   ========================================================================== */
/* --- Panels & Tabs --- */
.tab-content { display: none; animation: fade-in 0.6s ease-in-out; }
.tab-content.active { display: block; }

.hud-panel {
    background-color: rgba(16, 20, 28, 0.8);
    border: 1px solid var(--color-border);
    padding: 2rem;
    backdrop-filter: blur(10px);
    box-shadow: inset 0 0 15px rgba(0, 229, 255, 0.1), 0 0 10px rgba(2, 4, 8, 0.5);
}

.panel-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    color: var(--color-accent-cyan);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-shadow: var(--glow-cyan);
}

/* --- Forms & Buttons --- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.form-group { display: flex; flex-direction: column; }
.form-label { color: var(--color-text-secondary); margin-bottom: 0.5rem; font-size: 0.9rem; }

.form-input, .form-select {
    background-color: var(--color-bg-medium);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    padding: 0.75rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
}

.btn {
    font-family: 'Orbitron', sans-serif;
    background-color: var(--color-accent-cyan);
    color: var(--color-bg-dark);
    border: 1px solid var(--color-accent-cyan);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover { background-color: transparent; color: var(--color-accent-cyan); box-shadow: var(--glow-cyan); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.btn-lime { background-color: var(--color-accent-lime); border-color: var(--color-accent-lime); }
.btn-lime:hover { color: var(--color-accent-lime); box-shadow: var(--glow-lime); }

/* --- Cards (Trade, Mission, Beacon) --- */
.trade-result-card, .mission-card, .beacon-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    margin-top: 1rem;
    transition: all 0.3s ease;
}
.trade-result-card { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1.5rem; align-items: center; }
.trade-result-card:hover { transform: translateY(-5px); border-color: var(--color-accent-cyan); }
.mission-card, .beacon-card { display: flex; justify-content: space-between; align-items: center; }

.profit-display {
    text-align: center;
    padding: 1rem;
    background-color: rgba(168, 255, 0, 0.1);
    border: 1px solid var(--color-accent-lime);
    color: var(--color-accent-lime);
    font-size: 1.5rem;
    font-weight: 700;
    text-shadow: var(--glow-lime);
    grid-column: 1 / -1;
}

.mission-card-content h4, .beacon-card-content h4 { font-family: 'Orbitron', sans-serif; font-size: 1.2rem; margin-bottom: 0.5rem; }
.beacon-card { border-left: 4px solid var(--color-accent-lime); }
.beacon-card-content h4 { color: var(--color-accent-lime); }
.beacon-card-content p { color: var(--color-text-secondary); }

.delete-mission-btn { background: none; border: none; color: var(--color-text-secondary); cursor: pointer; transition: color 0.3s ease; }
.delete-mission-btn:hover { color: var(--color-accent-cyan); }
.join-beacon-btn { background-color: transparent; border: 1px solid var(--color-accent-lime); color: var(--color-accent-lime); padding: 0.5rem 1rem; }
.join-beacon-btn:hover { background-color: var(--color-accent-lime); color: var(--color-bg-dark); box-shadow: var(--glow-lime); }

/* --- Accordion --- */
.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-header { background: none; border: none; color: var(--color-text-primary); width: 100%; text-align: left; padding: 1rem 0; font-size: 1.1rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out; color: var(--color-text-secondary); }
.accordion-content p { padding: 0 0 1rem 1rem; }

/* ==========================================================================
   6. Animations & Utilities
   ========================================================================== */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slide-down { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slide-up { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-in { from { opacity: 0; transform: scale(0.98); } to { opacity: 1; transform: scale(1); } }