/* style.css - pasta raiz */

/* ==========================================================================
   Variáveis CSS - Tema Tech Premium
   ========================================================================== */

:root {
    /* Cores principais */
    --bg-dark: #0a0e14;
    --bg-medium: #0f1419;
    --bg-light: #161d26;
    --bg-card: #1a212b;
    
    /* Cores de acento */
    --primary: #00d4ff;
    --primary-dark: #00a8cc;
    --primary-glow: rgba(0, 212, 255, 0.3);
    --secondary: #7c3aed;
    --secondary-glow: rgba(124, 58, 237, 0.3);
    --accent-cyan: #22d3ee;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-card: linear-gradient(145deg, rgba(26, 33, 43, 0.9) 0%, rgba(15, 20, 25, 0.95) 100%);
    --gradient-header: linear-gradient(180deg, rgba(0, 212, 255, 0.1) 0%, transparent 100%);
    
    /* Textos */
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    /* Bordas */
    --border-color: rgba(48, 54, 61, 0.6);
    --border-light: rgba(139, 148, 158, 0.3);
    
    /* Status */
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    
    /* Efeitos */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--primary-glow);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Fontes */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-title: 'Orbitron', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

/* ==========================================================================
   Reset e Base
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Fundo com grid animado */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

::selection {
    background-color: var(--primary);
    color: var(--bg-dark);
}

/* ==========================================================================
   Partículas de Fundo
   ========================================================================== */

.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.particles-bg::before,
.particles-bg::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

.particles-bg::before {
    background: var(--primary);
    top: -100px;
    right: -100px;
}

.particles-bg::after {
    background: var(--secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, 50px) scale(1.1); }
    50% { transform: translate(0, 100px) scale(1); }
    75% { transform: translate(-50px, 50px) scale(0.9); }
}

/* ==========================================================================
   Preloader Premium
   ========================================================================== */

#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out, visibility 0.5s;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-content {
    text-align: center;
}

.spinner-ring {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.spinner-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 64px;
    height: 64px;
    margin: 8px;
    border: 3px solid transparent;
    border-radius: 50%;
    animation: spinner-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring div:nth-child(1) {
    border-top-color: var(--primary);
    animation-delay: -0.45s;
}

.spinner-ring div:nth-child(2) {
    border-right-color: var(--secondary);
    animation-delay: -0.3s;
}

.spinner-ring div:nth-child(3) {
    border-bottom-color: var(--accent-cyan);
    animation-delay: -0.15s;
}

.spinner-ring div:nth-child(4) {
    border-left-color: var(--accent-purple);
}

@keyframes spinner-ring {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#preloader p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    letter-spacing: 2px;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

/* ==========================================================================
   Header Premium com Logo
   ========================================================================== */

.main-header {
    background: var(--bg-medium);
    padding: 3rem 1.5rem 4rem;
    margin-bottom: -50px;
    position: relative;
    z-index: 10;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.header-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, var(--primary-glow) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

/* Logo Container */
.logo-container {
    margin-bottom: 1.5rem;
    display: inline-block;
    position: relative;
}

.logo-img {
    width: 120px;
    height: auto;
    filter: drop-shadow(0 0 20px var(--primary-glow));
    animation: logo-pulse 3s ease-in-out infinite;
    transition: var(--transition);
}

.logo-img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 30px var(--primary-glow));
}

@keyframes logo-pulse {
    0%, 100% { filter: drop-shadow(0 0 20px var(--primary-glow)); }
    50% { filter: drop-shadow(0 0 40px var(--primary-glow)); }
}

/* Título */
.tech-title {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    position: relative;
    display: inline-block;
}

.title-bracket {
    -webkit-text-fill-color: var(--primary);
    opacity: 0.6;
    font-weight: 400;
}

.sub-headline {
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 400;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.sub-headline i {
    color: var(--primary);
    opacity: 0.8;
}

.header-line {
    width: 100px;
    height: 3px;
    background: var(--gradient-primary);
    margin: 1.5rem auto 0;
    border-radius: 3px;
    box-shadow: var(--shadow-glow);
}

/* ==========================================================================
   Container e Card Principal
   ========================================================================== */

main.container {
    max-width: 900px;
    padding: 0 15px;
    position: relative;
    z-index: 20;
}

.main-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    margin-bottom: 3.5rem;
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

.main-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 212, 255, 0.1);
}

.card-body {
    padding: clamp(1.8rem, 5vw, 3rem);
}

.card-title.h4 {
    color: var(--primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 2rem !important;
    font-weight: 600;
    font-size: clamp(1.3rem, 4vw, 1.6rem);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.card-title i {
    font-size: 1.1em;
    opacity: 0.9;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Linha divisória */
.divider-line {
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
    position: relative;
}

.divider-line::after {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

/* ==========================================================================
   Formulários
   ========================================================================== */

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label i {
    color: var(--primary);
    opacity: 0.7;
    font-size: 0.9em;
}

.form-control,
.form-select {
    background-color: var(--bg-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    transition: var(--transition);
    font-size: 0.95rem;
    font-family: inherit;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-light);
    color: var(--text-primary);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Select customizado */
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2300d4ff' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px 12px;
    appearance: none;
    padding-right: 2.5rem;
}

/* Input de Cor */
.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-control-color {
    width: 60px;
    height: 45px;
    padding: 4px;
    cursor: pointer;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    flex-shrink: 0;
}

.form-control-color:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.color-preview {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Radio e Checkbox */
.form-check-label {
    color: var(--text-primary);
    cursor: pointer;
    padding-left: 0.4em;
    font-size: 0.95rem;
}

.form-check-input {
    cursor: pointer;
    background-color: var(--bg-light);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    width: 1.25em;
    height: 1.25em;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Texto auxiliar */
.form-text.text-muted-light {
    color: var(--text-muted);
    font-size: 0.85em;
}

/* Validação */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--error);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.invalid-feedback {
    color: var(--error);
    font-size: 0.85em;
    margin-top: 0.3rem;
    font-weight: 500;
}

/* ==========================================================================
   Botões Premium
   ========================================================================== */

.btn-action {
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 12px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    font-size: 1rem;
}

.btn-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.btn-action:hover::before {
    left: 100%;
}

/* Botão Gerar */
.btn-generate {
    background: var(--gradient-primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-generate:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--primary-glow);
    color: var(--bg-dark);
}

.btn-generate:active {
    transform: translateY(0);
}

/* Botão Copiar */
.btn-copy {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--primary);
}

.btn-copy:hover {
    background: var(--bg-card);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

/* Botão Download */
.btn-download {
    background: linear-gradient(135deg, var(--success) 0%, #16a34a 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.3);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(34, 197, 94, 0.4);
    color: white;
}

/* Botão desabilitado */
.btn-action:disabled {
    background: var(--bg-light);
    border-color: var(--border-color);
    color: var(--text-muted);
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-action:disabled:hover {
    transform: none;
    box-shadow: none;
}

.btn-action:disabled::before {
    display: none;
}

/* Botão sucesso (cópia) */
.btn-success.btn-copy {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

/* ==========================================================================
   Seções de Opções
   ========================================================================== */

.content-options {
    display: none;
    padding: 1.5rem;
    background: rgba(15, 20, 25, 0.5);
    border-radius: 12px;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.content-options.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.options-title {
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 1.2rem;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.options-title i {
    opacity: 0.9;
}

.content-options-child {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-out;
    padding-top: 0.5rem;
}

.content-options-child.active {
    display: block;
    opacity: 1;
}

/* ==========================================================================
   Área do QR Code
   ========================================================================== */

#qr-code-result-area {
    margin-top: 3rem !important;
    padding: 2rem;
    background: rgba(15, 20, 25, 0.6);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    animation: fadeInResult 0.5s ease-out forwards;
}

@keyframes fadeInResult {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

#qr-code-container {
    display: inline-block;
    position: relative;
    margin-bottom: 1.5rem !important;
}

.qr-code-wrapper {
    display: block;
    padding: 15px;
    background: linear-gradient(145deg, var(--bg-card), var(--bg-medium));
    border: 2px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}

#qr-code canvas,
#qr-code img {
    display: block;
    margin: 0;
    background-color: white;
    padding: 10px;
    border-radius: 8px;
    max-width: 100%;
    height: auto;
    image-rendering: pixelated;
}

/* Linha de Scanner */
.scanner-line {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    height: 3px;
    background: var(--gradient-primary);
    box-shadow: 0 0 15px var(--primary);
    opacity: 0;
    animation: scan 2.5s ease-in-out infinite;
    border-radius: 3px;
    z-index: 5;
}

#qr-code-result-area.visible .scanner-line {
    opacity: 0.8;
}

@keyframes scan {
    0% { top: 15px; opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.8; }
    100% { top: calc(100% - 18px); opacity: 0; }
}

/* Erro */
#qr-code.error p {
    color: var(--error);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 1rem;
}

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

.main-footer {
    padding: 2.5rem 1rem 2rem;
    margin-top: 4rem;
    background: var(--bg-medium);
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

.footer-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.main-footer b {
    color: var(--text-primary);
    font-weight: 600;
}

.footer-links {
    margin: 1rem 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

.separator {
    color: var(--text-muted);
    opacity: 0.5;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

/* ==========================================================================
   Responsividade
   ========================================================================== */

@media (max-width: 767px) {
    body {
        font-size: 15px;
    }
    
    .main-header {
        padding: 2rem 1rem 3rem;
        margin-bottom: -40px;
    }
    
    .logo-img {
        width: 100px;
    }
    
    .card-body {
        padding: clamp(1.5rem, 4vw, 2rem);
    }
    
    .btn-action {
        padding: 0.85rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .d-md-flex.justify-content-md-center {
        flex-direction: column;
    }
    
    .qr-code-wrapper {
        padding: 10px;
    }
    
    .color-input-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .form-control-color {
        width: 100%;
    }
}

@media (max-width: 575px) {
    .tech-title {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }
    
    .sub-headline {
        font-size: 0.9rem;
    }
    
    .card-body {
        padding: 1.2rem;
    }
    
    .card-title.h4 {
        font-size: 1.2rem;
    }
    
    .btn-action {
        font-size: 0.9rem;
        padding: 0.8rem 1.2rem;
    }
    
    .footer-links {
        gap: 0.3rem;
    }
    
    .separator {
        display: none;
    }
    
    .content-options {
        padding: 1rem;
    }
    
    #qr-code-result-area {
        padding: 1.5rem 1rem;
    }
}

/* ==========================================================================
   Animações de entrada
   ========================================================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-card {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.main-header .header-content > * {
    animation: fadeInUp 0.5s ease-out both;
}

.logo-container { animation-delay: 0.1s; }
.tech-title { animation-delay: 0.2s; }
.sub-headline { animation-delay: 0.3s; }
.header-line { animation-delay: 0.4s; }