:root {
    --primary-color: #6c5ce7;
    --primary-hover: #5649d1;
    --secondary-color: #a29bfe;
    --accent-color: #00cec9;
    --background-color: #f8f9fd;
    --card-background: #fff;
    --text-color: #2d3436;
    --text-muted: #636e72;
    --border-color: rgba(0,0,0,0.08);
    --highlight-color: rgba(108,92,231,0.1);
    --border-radius-sm: 8px;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --shadow: 0 10px 20px rgba(0,0,0,0.05);
    --hover-shadow: 0 15px 30px rgba(0,0,0,0.1);
    --card-shadow: 0 4px 12px rgba(0,0,0,0.05);
    --transition: all 0.3s cubic-bezier(0.25,0.8,0.25,1);
    --hover-transition: all 0.3s cubic-bezier(0.165,0.84,0.44,1);
    --hover-transform: translateY(-5px);
    --side-nav-width: 250px;
    --side-nav-collapsed: 70px;
    --header-height: 70px;
}

.dark-mode {
    --primary-color: #B98EFF;
    --primary-hover: #8E54E9;
    --secondary-color: #4B6CB7;
    --accent-color: #8E54E9;
    --background-color: #1a1b2e;
    --card-background: #2a2e4d;
    --text-color: #eaeaff;
    --text-muted: #b2becd;
    --border-color: rgba(255,255,255,0.08);
    --highlight-color: rgba(185,142,255,0.2);
    --shadow: 0 10px 25px rgba(0,0,0,0.2);
    --hover-shadow: 0 15px 35px rgba(0,0,0,0.3);
    --card-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

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

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.5;
    transition: var(--transition);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 300% 300%;
    animation: gradient-shift 8s ease infinite;
}
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Side Navigation */
.side-nav {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: var(--side-nav-width);
    background-color: var(--card-background);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    overflow-x: hidden;
}
.side-nav.collapsed {
    width: var(--side-nav-collapsed);
}
.side-nav-logo {
    display: flex;
    align-items: center;
    padding: 0 24px;
    margin-bottom: 40px;
    gap: 10px;
}
.side-nav-logo #sideNavName {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    transition: var(--transition);
}
.side-nav-links {
    display: flex;
    flex-direction: column;
    flex: 1;
}
.side-nav-link {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: var(--text-muted);
    transition: var(--transition);
    margin: 4px 0;
    border-left: 3px solid transparent;
    gap: 12px;
}
.side-nav-link i {
    font-size: 1.25rem;
    min-width: 24px;
    text-align: center;
}
.side-nav-link:hover, .side-nav-link.active {
    color: var(--primary-color);
    background-color: var(--highlight-color);
    border-left-color: var(--primary-color);
}
.side-nav.collapsed .side-nav-link {
    justify-content: center;
    padding: 12px 0;
}
.side-nav.collapsed .side-nav-logo #sideNavName,
.side-nav.collapsed .side-nav-link span {
    display: none;
}
.nav-collapse-btn {
    position: absolute;
    top: 50%;
    right: -16px;
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 10;
}
.nav-collapse-btn:hover {
    transform: scale(1.1);
}
.side-nav.collapsed .nav-collapse-btn i {
    transform: rotate(180deg);
}

/* Main Wrapper */
.main-wrapper {
    min-height: 100vh;
    margin-left: var(--side-nav-width);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.main-wrapper.nav-collapsed {
    margin-left: var(--side-nav-collapsed);
}

/* Header */
.main-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background-color: var(--card-background);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    padding: 0 24px;
    z-index: 100;
}
.menu-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    display: none;
    margin-right: 16px;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-left: auto;
}
.theme-toggle-btn {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.theme-toggle-btn:hover, .theme-toggle-btn:focus {
    background: var(--highlight-color);
    color: var(--primary-hover);
    outline: none;
}

/* Hero Section */
.hero-section {
    display: flex;
    align-items: center;
    padding: 80px 40px;
    position: relative;
    overflow: hidden;
    min-height: calc(100vh - var(--header-height));
    background-color: var(--card-background);
    color: var(--text-color);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--hover-transition);
    border: 1px solid var(--border-color);
    margin: 32px 0 0;
}
.hero-content {
    flex: 1;
    max-width: 600px;
    animation: slideInLeft 0.8s ease-out;
    position: relative;
    z-index: 5;
}
.hero-heading {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}
.hero-heading h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0;
}
.hero-description {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}
.hero-visual {
    flex: 1;
    position: relative;
    height: 400px;
    animation: slideInRight 0.8s ease-out;
    z-index: 2;
}
.banner-container {
    width: 80%;
    height: 100%;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    transform: rotate(3deg);
    position: relative;
    z-index: 3;
    margin: 0 auto;
}
.banner-container:hover {
    transform: rotate(0deg) translateY(-10px);
    box-shadow: var(--hover-shadow);
}
.banner {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.banner-container:hover .banner {
    transform: scale(1.05);
}
.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
    animation: float 10s infinite alternate;
}
.shape-1 {
    width: 200px;
    height: 200px;
    top: -50px;
    right: 80px;
    animation-delay: 0s;
}
.shape-2 {
    width: 150px;
    height: 150px;
    bottom: 0;
    right: 20%;
    animation-delay: 2s;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}
.shape-3 {
    width: 80px;
    height: 80px;
    bottom: 30%;
    right: 10%;
    animation-delay: 4s;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}
@keyframes slideInLeft {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes slideInRight {
    from { transform: translateX(20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Loading Spinner */
#loadingScreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.spinner-wrapper {
    text-align: center;
}
.spinner-wrapper p {
    color: var(--text-color);
    font-weight: 500;
    margin-top: 20px;
    font-size: 1.1rem;
    letter-spacing: 1px;
}
.loading-dots {
    display: inline-block;
    width: 20px;
    text-align: left;
}
.spinner-logo {
    animation: rotate-spinner 2s linear infinite;
}
.spinner-path {
    stroke: var(--background-color);
    stroke-linecap: round;
}
.spinner-animation {
    stroke: var(--primary-color);
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}
@keyframes dash {
    0% { stroke-dasharray: 1, 200; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 89, 200; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 89, 200; stroke-dashoffset: -124; }
}
@keyframes rotate-spinner {
    100% { transform: rotate(360deg); }
}

/* Footer personalizado */
.main-footer {
    margin-top: auto;
    padding: 30px 40px 22px 40px;
    background-color: var(--card-background);
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    text-align: center;
}
.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}
.copyright a, .powered-by a {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
    transition: color .2s;
}
.copyright a:hover, .powered-by a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}
.powered-by {
    display: inline;
}

/* Responsive */
@media (max-width: 1200px) {
    .hero-section {
        flex-direction: column;
        padding: 60px 30px;
    }
    .hero-content {
        max-width: 100%;
        margin-bottom: 40px;
    }
    .hero-heading h1 {
        font-size: 3rem;
    }
    .hero-visual {
        width: 100%;
    }
    .banner-container {
        width: 90%;
        margin: 0 auto;
    }
}
@media (max-width: 992px) {
    .main-wrapper {
        margin-left: 0;
    }
    .side-nav {
        transform: translateX(-100%);
    }
    .side-nav.active {
        transform: translateX(0);
    }
    .menu-toggle {
        display: block;
    }
    .hero-section {
        padding: 40px 20px;
    }
}
@media (max-width: 768px) {
    .hero-section {
        padding: 30px 20px;
    }
    .hero-heading h1 {
        font-size: 2.5rem;
    }
    .hero-description {
        font-size: 1.1rem;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 576px) {
    .main-header {
        padding: 0 15px;
    }
    .hero-heading h1 {
        font-size: 2rem;
    }
    .hero-description {
        font-size: 1rem;
    }
    .hero-section {
        padding: 15px;
    }
    .main-footer {
        padding: 18px 8px 14px 8px;
    }
}