/* ============================================
   COSMIC EFFECTS DEMO - STYLESHEET
   Sistema de comparação de backgrounds
   ============================================ */

/* === RESET E BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    overflow-x: hidden;
}

/* === VARIÁVEIS === */
:root {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-tertiary: #1a1a1a;
    --color-accent-cyan: #00D9FF;
    --color-accent-purple: #7C3AED;
    --color-accent-green: #10B981;
    --color-text-primary: #ffffff;
    --color-text-secondary: #94a3b8;
    --spacing-unit: 8px;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
}

/* === HEADER === */
.demo-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 4);
}

.header-content {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.header-content h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.header-content p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* === CONTROLES === */
.effect-controls {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
    flex-wrap: wrap;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.control-btn.active {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.3);
}

.btn-icon {
    font-size: 1.2rem;
}

/* === CONTAINER PRINCIPAL === */
.demo-container {
    position: relative;
    min-height: 100vh;
    padding-top: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* === BACKGROUNDS (Base) === */
.effect-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    z-index: 1;
}

.effect-background.active {
    opacity: 1;
    visibility: visible;
}

/* === OPÇÃO 1: GALAXY SPIRAL (Próximo à referência) === */
.galaxy-container {
    width: 100%;
    height: 100%;
    position: relative;
    background: radial-gradient(ellipse at center, #0a1628 0%, #050a15 50%, #000000 100%);
    overflow: hidden;
}

/* Campo de estrelas */
.stars-field {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent),
        radial-gradient(1px 1px at 33% 80%, white, transparent),
        radial-gradient(1px 1px at 75% 25%, white, transparent);
    background-size: 200% 200%;
    background-position: 0% 0%, 40% 60%, 50% 50%, 80% 10%, 90% 60%, 33% 80%, 75% 25%;
    animation: twinkle 3s ease-in-out infinite alternate;
    opacity: 0.8;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Núcleo da galáxia (raio vertical central) */
.galaxy-core {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 120%;
    background: linear-gradient(to bottom,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(0, 217, 255, 0.8) 20%,
        rgba(0, 217, 255, 0.4) 40%,
        rgba(30, 64, 175, 0.2) 60%,
        transparent 100%
    );
    filter: blur(40px);
    animation: beamPulse 3s ease-in-out infinite;
    z-index: 10;
}

@keyframes beamPulse {
    0%, 100% {
        opacity: 0.8;
        transform: translateX(-50%) scaleY(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleY(1.05);
    }
}

/* Espirais da galáxia */
.galaxy-spiral {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    opacity: 0.6;
    mix-blend-mode: screen;
}

.spiral-1 {
    width: 800px;
    height: 300px;
    background: radial-gradient(ellipse at center,
        rgba(0, 217, 255, 0.4) 0%,
        rgba(30, 64, 175, 0.3) 30%,
        rgba(255, 165, 0, 0.2) 50%,
        transparent 70%
    );
    transform: translate(-50%, -50%) rotate(-30deg);
    animation: spiralRotate1 40s linear infinite;
    filter: blur(20px);
}

.spiral-2 {
    width: 900px;
    height: 350px;
    background: radial-gradient(ellipse at center,
        rgba(255, 165, 0, 0.3) 0%,
        rgba(0, 217, 255, 0.3) 30%,
        rgba(124, 58, 237, 0.2) 50%,
        transparent 70%
    );
    transform: translate(-50%, -50%) rotate(30deg);
    animation: spiralRotate2 45s linear infinite;
    filter: blur(25px);
}

.spiral-3 {
    width: 1000px;
    height: 400px;
    background: radial-gradient(ellipse at center,
        rgba(30, 64, 175, 0.4) 0%,
        rgba(0, 217, 255, 0.2) 40%,
        transparent 60%
    );
    transform: translate(-50%, -50%) rotate(90deg);
    animation: spiralRotate3 50s linear infinite;
    filter: blur(30px);
}

@keyframes spiralRotate1 {
    from { transform: translate(-50%, -50%) rotate(-30deg); }
    to { transform: translate(-50%, -50%) rotate(330deg); }
}

@keyframes spiralRotate2 {
    from { transform: translate(-50%, -50%) rotate(30deg); }
    to { transform: translate(-50%, -50%) rotate(390deg); }
}

@keyframes spiralRotate3 {
    from { transform: translate(-50%, -50%) rotate(90deg); }
    to { transform: translate(-50%, -50%) rotate(450deg); }
}

/* Poeira galáctica */
.galaxy-dust {
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse 40% 20% at 30% 50%, rgba(255, 165, 0, 0.15), transparent),
        radial-gradient(ellipse 40% 20% at 70% 50%, rgba(0, 217, 255, 0.15), transparent),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1), transparent 60%);
    mix-blend-mode: screen;
    animation: dustFloat 30s ease-in-out infinite;
}

@keyframes dustFloat {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1) rotate(5deg);
        opacity: 0.7;
    }
}

/* === OPÇÃO 2: COSMIC BEAM (Canvas com raio central) === */
#beam-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: radial-gradient(ellipse at center, #0a1628 0%, #050a15 50%, #000000 100%);
}

/* === OPÇÃO 3: STARDUST CANVAS (Campo estelar completo) === */
#stardust-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: radial-gradient(ellipse at center, #0a1628 0%, #050a15 50%, #000000 100%);
}

/* === OPÇÃO 4: ENERGY VORTEX (SVG com espiral) === */
.vortex-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.vortex-rings {
    filter: blur(2px);
}

/* === CONTEÚDO DE DEMONSTRAÇÃO === */
.demo-content {
    position: relative;
    z-index: 10;
    max-width: 600px;
    width: 90%;
}

.content-card {
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: calc(var(--spacing-unit) * 6);
    text-align: center;
}

.content-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.demo-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
}

.demo-btn {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    border-radius: var(--radius-md);
    font-family: 'Sora', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.demo-btn.primary {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    color: #ffffff;
}

.demo-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.4);
}

.demo-btn.secondary {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-primary);
}

.demo-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* === SEÇÃO DE COMPARAÇÃO === */
.comparison-section {
    position: relative;
    z-index: 10;
    padding: calc(var(--spacing-unit) * 12) calc(var(--spacing-unit) * 4);
    background: var(--color-bg-primary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    max-width: 1400px;
    margin: 0 auto;
}

/* === CARDS DE COMPARAÇÃO === */
.comparison-card {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: calc(var(--spacing-unit) * 4);
    transition: all 0.4s ease;
}

.comparison-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 217, 255, 0.3);
    box-shadow: 0 12px 40px rgba(0, 217, 255, 0.15);
}

.comparison-card.highlighted {
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 40px rgba(0, 217, 255, 0.3);
    transform: scale(1.02);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.performance-badge {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.performance-badge.high {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.performance-badge.medium {
    background: rgba(251, 191, 36, 0.2);
    color: #FBB936;
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.card-body {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.pros, .cons {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.pros h4, .cons h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-accent-cyan);
}

.cons h4 {
    color: var(--color-text-secondary);
}

.pros ul, .cons ul {
    list-style: none;
}

.pros li, .cons li {
    padding: calc(var(--spacing-unit) * 1) 0;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.card-footer {
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-tags {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
    flex-wrap: wrap;
}

.tag {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
}

/* === SEÇÃO DE RECOMENDAÇÃO === */
.recommendation-section {
    position: relative;
    z-index: 10;
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 4);
    background: var(--color-bg-primary);
}

.recommendation-card {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: calc(var(--spacing-unit) * 6);
    text-align: center;
}

.recommendation-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--color-text-primary);
}

.recommendation-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: 1rem;
}

.recommendation-card strong {
    color: var(--color-accent-cyan);
    font-weight: 700;
}

/* === RESPONSIVO === */
@media (max-width: 768px) {
    .effect-controls {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1);
    }
    
    .control-btn {
        width: 100%;
        justify-content: center;
    }
    
    .header-content h1 {
        font-size: 1.5rem;
    }
    
    .demo-container {
        padding-top: 280px;
    }
    
    .content-card {
        padding: calc(var(--spacing-unit) * 4);
    }
    
    .demo-buttons {
        flex-direction: column;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}