:root {
    --bg-color: #0b0c15;
    --sidebar-bg: #14151f;
    --card-bg: #1c1d29;
    --primary-color: #f91f6d;
    --primary-hover: #d41658;
    --text-color: #ffffff;
    --text-muted: #8f90a6;
    --border-color: #2d2e3f;
    --input-bg: #262736;
    --success-bg: #1e3a29;
    --success-text: #4cd964;
    --error-bg: #3a1e1e;
    --error-text: #ff453a;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
}

/* Layout com Sidebar (para dashboard e páginas internas) */
.app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    flex-shrink: 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--primary-color);
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: block;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    text-decoration: none;
    color: var(--text-muted);
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
    background-color: rgba(249, 31, 109, 0.1);
    color: var(--primary-color);
}

.nav-link i {
    width: 20px;
    text-align: center;
}

/* Conteúdo Principal */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--card-bg);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

.coin-badge {
    background: rgba(249, 31, 109, 0.2);
    color: var(--primary-color);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.centered-card {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

h1, h2, h3 {
    color: var(--text-color);
    margin-top: 0;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

/* Formulários e Inputs */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
select {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    border-color: var(--primary-color);
}

/* Botões */
button, .btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
    text-decoration: none;
    display: inline-block;
}

button:hover, .btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

button.secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

button.secondary:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

/* Login/Register Layout Centralizado */
body.auth-body {
    justify-content: center;
    align-items: center;
    background-image: radial-gradient(circle at 50% 0%, #1f202e 0%, var(--bg-color) 70%);
}

.auth-container {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    text-align: center;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.02);
    margin-bottom: 1rem;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(249, 31, 109, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Canvas Editor */
#image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    margin-top: 1rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

#uploaded-image {
    display: block;
    max-width: 100%;
}

/* Tabelas */
.plans-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 1rem;
}

.plans-table th {
    background-color: var(--input-bg);
    color: var(--text-muted);
    font-weight: 600;
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.plans-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.plans-table tr:last-child td {
    border-bottom: none;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
    border-left: 4px solid var(--primary-color);
}

.alert-error {
    background-color: var(--error-bg);
    color: var(--error-text);
    border-left-color: var(--error-text);
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Grid de Planos (Opcional se quiser cards em vez de tabela) */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.plan-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s;
}

.plan-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.plan-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.plan-price {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

/* Planos VIP */
.vip-plans-section {
    margin-top: 2rem;
}

.vip-plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.vip-plan-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: all 0.3s ease;
}

.vip-plan-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(249, 31, 109, 0.2);
}

.vip-plan-card.popular {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(249, 31, 109, 0.1) 0%, var(--card-bg) 100%);
}

.popular-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.plan-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.plan-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.plan-header .plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.3rem;
    margin-bottom: 0.5rem;
}

.plan-header .currency {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.plan-header .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.payment-type {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.plan-benefits {
    flex: 1;
    margin-bottom: 2rem;
}

.plan-benefits h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.plan-benefits ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.plan-benefits li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0.6rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.plan-benefits li i {
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.btn-plan {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-plan:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(249, 31, 109, 0.4);
}

/* Pacotes de Moedas */
.coins-section {
    margin-top: 4rem;
}

.coins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.coin-package {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.coin-package:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(249, 31, 109, 0.2);
}

.coin-package.promotional {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(249, 31, 109, 0.1) 0%, var(--card-bg) 100%);
}

.promo-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.coin-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.coin-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.coin-price {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.btn-coin {
    width: 100%;
    padding: 0.8rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-coin:hover {
    background: var(--primary-hover);
    color: white;
    transform: translateY(-2px);
}

/* Footer */
.plans-footer {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-column h4 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-logo span {
    color: var(--primary-color);
}

/* ============================================
   RESPONSIVE & MOBILE STYLES
   ============================================ */

/* Menu Hambúrguer */
.menu-toggle {
    display: none;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.5rem;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: var(--primary-color);
    color: white;
}

.menu-toggle.active {
    background: var(--primary-color);
    color: white;
}

/* Mobile First - Sidebar */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.3);
    }

    .sidebar.active {
        left: 0;
    }

    .main-content {
        padding: 1rem;
        width: 100%;
    }

    /* Top Bar Mobile */
    .top-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-top: 3.5rem;
    }

    .top-bar h1 {
        font-size: 1.5rem !important;
        margin-bottom: 0.5rem;
    }

    .top-bar p {
        font-size: 0.9rem !important;
    }

    .user-profile {
        width: 100%;
        justify-content: space-between;
        padding: 0.8rem 1rem;
    }

    /* Grids Responsivos */
    .vip-plans-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .coins-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Cards */
    .card {
        padding: 1.5rem;
    }

    .centered-card {
        max-width: 100%;
    }

    /* Planos VIP Cards */
    .vip-plan-card {
        padding: 1.5rem;
    }

    .plan-header .amount {
        font-size: 2.5rem;
    }

    .plan-benefits li {
        font-size: 0.85rem;
    }

    /* Pacotes de Moedas */
    .coin-package {
        padding: 1.5rem;
    }

    .coin-amount {
        font-size: 2rem;
    }

    .coin-price {
        font-size: 1.2rem;
    }

    /* Upload Area */
    .upload-area {
        padding: 2rem 1rem;
    }

    .upload-icon {
        font-size: 2.5rem;
    }

    /* Canvas Container */
    .canvas-wrapper {
        overflow-x: auto;
    }

    #image-container {
        overflow-x: auto;
    }

    #uploaded-image {
        max-width: 100%;
        height: auto;
    }

    #mask-canvas {
        max-width: 100%;
        height: auto;
    }

    /* Controles */
    .controls {
        padding: 0;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    /* Botões */
    button, .btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }

    .btn-plan {
        padding: 0.9rem;
        font-size: 0.9rem;
    }

    /* Footer */
    .plans-footer {
        margin-top: 3rem;
        padding-top: 2rem;
    }

    .footer-column h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    /* Alertas */
    .alert {
        padding: 0.8rem;
        font-size: 0.9rem;
    }

    /* Auth Container */
    .auth-container {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }

    /* Títulos */
    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }
}

/* Tablets */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }

    .vip-plans-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .coins-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .main-content {
        padding: 1.5rem;
    }

    .top-bar h1 {
        font-size: 2rem !important;
    }
}

/* Mobile Pequeno */
@media (max-width: 480px) {
    .coins-grid {
        grid-template-columns: 1fr;
    }

    .top-bar h1 {
        font-size: 1.3rem !important;
    }

    .plan-header .amount {
        font-size: 2rem;
    }

    .coin-amount {
        font-size: 1.8rem;
    }

    .coin-price {
        font-size: 1.1rem;
    }

    .user-profile {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }

    .coin-badge {
        font-size: 0.75rem;
        padding: 0.2rem 0.5rem;
    }

    .popular-badge {
        font-size: 0.65rem;
        padding: 0.3rem 0.7rem;
        right: 10px;
    }

    .promo-badge {
        font-size: 0.65rem;
        padding: 0.25rem 0.6rem;
    }
}

/* Overlay para fechar sidebar no mobile */
@media (max-width: 768px) {
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .sidebar-overlay.active {
        display: block;
    }
}

/* Touch Events para Canvas Mobile */
@media (max-width: 768px) {
    #mask-canvas {
        touch-action: none;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }

    /* Melhorar área de toque */
    .canvas-wrapper {
        -webkit-tap-highlight-color: transparent;
    }

    /* Ajustar controles no mobile */
    .controls .form-group label {
        font-size: 0.85rem;
    }

    input[type="range"] {
        height: 8px;
    }

    textarea {
        font-size: 0.9rem;
        padding: 0.8rem !important;
    }
}

/* Ajustes para telas muito pequenas */
@media (max-width: 360px) {
    .main-content {
        padding: 0.75rem;
    }

    .card {
        padding: 1rem;
    }

    .vip-plan-card {
        padding: 1rem;
    }

    .coin-package {
        padding: 1rem;
    }

    .menu-toggle {
        padding: 0.4rem 0.8rem;
        font-size: 1.2rem;
        top: 0.75rem;
        left: 0.75rem;
    }

    .top-bar {
        margin-top: 3rem;
    }

    .logo {
        font-size: 1.2rem;
    }
}

/* Melhorias de acessibilidade e UX */
@media (max-width: 768px) {
    /* Prevenir zoom em inputs no iOS */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    select,
    textarea {
        font-size: 16px;
    }

    /* Melhorar espaçamento entre elementos */
    .vip-plans-section,
    .coins-section {
        margin-top: 2rem;
    }

    /* Ajustar padding do main content */
    .main-content {
        padding-bottom: 2rem;
    }
}