:root {
    --gold: #FFC658;

    --bg: #17212F;
    --bg-gradient: radial-gradient(circle at 10% 20%, #17212F 0%, transparent 40%),
                   radial-gradient(circle at 90% 80%, #212F3F 0%, transparent 40%),
                   linear-gradient(135deg, #0F1423 0%, #1E2A3A 100%);

    --text-primary: #E8E6E3;
    --text-secondary: #F8FAFC;
    --text-accent: #FFC658;
    --text-muted: #718096;

    --div-bg-color: rgba(0, 0, 0, 0.3);
    --glass: blur(10px);
    --borders: 1px solid rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --ico-img-filter: invert(1);

    --flash-success-bg: #e6f4ea;
    --flash-success-color: #137333;
    --flash-success-border: #b6e4b6;
    
    --flash-error-bg: #ff000026;
    --flash-error-color: #f00;
    --flash-error-border: #f5b4ab;

    --btn-primary-bg: linear-gradient(135deg, #FFC658, #1A1F36);
    --btn-secondary-bg: #e2e8f0;
    --btn-secondary-color: #4a5568;
    --btn-secondary-border: none;
    --btn-secondary-hover: #cbd5e0;

    --feature-icon-bg: linear-gradient(135deg, #FFC658, #1A1F36);
    --avatar-bg: linear-gradient(135deg, #FFD700, #B8860B);
    --welcome-text-gradient: linear-gradient(135deg, var(--text-accent), var(--gold));
}

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

html {
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    height: 100%;
    overflow-x: hidden;
    position: relative;
    background: var(--bg-gradient);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

body {
    color: var(--text-primary);
    font-family: 'Roboto', 'Segoe UI', system-ui, sans-serif;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    overflow-x: hidden;
    background: transparent;
    position: relative;
    animation: bodyAppear 1s ease-out;
}

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

.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    margin: 0 auto;
}

.main {
    background-color: var(--div-bg-color);
    border-radius: 10px;
    border: var(--borders);
    box-shadow: var(--shadow);
    margin-bottom: 10px;
    padding: 10px;
}

.mainbox {
    background-color: var(--div-bg-color);
    border: var(--borders);
    backdrop-filter: var(--glass);
    padding: 20px;
    border-radius: 25px;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    max-width: 500px;
    margin: 0 auto;
    animation: slideUp 0.6s ease-out;
}

a {
    text-decoration: none;
    color: #fff;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: transparent;
    opacity: 0;
    transition: all 0.3s cubic-bezier(.25,.8,.25,1);
    z-index: -1;
}

a:hover::before {
    opacity: 0.3;
}

.header {
    padding: 0px 10px;
    color: var(--text-accent);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 2px;
    font-size: 2rem;
    margin-top: 0;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
}

h1 {
    color: var(--text-accent);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 2px;
    font-size: 2rem;
    margin-top: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    transform: translateY(-7px);
}

.avatar {
    width: 50px;
    height: 50px;
    background: var(--avatar-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    overflow-x: hidden;
    box-shadow: var(--shadow);
}

.welcome-card {
    background-color: var(--div-bg-color);
    border-radius: 10px;
    border: var(--borders);
    backdrop-filter: var(--glass);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    animation: fadeIn 0.6s ease-out;
}

.welcome-card h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    background: var(--welcome-text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-card p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.feature-card {
    background-color: var(--div-bg-color);
    border-radius: 10px;
    border: var(--borders);
    backdrop-filter: var(--glass);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    color: var(--text-secondary);
    animation: fadeIn 0.6s ease-out;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--feature-icon-bg);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-accent);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.5;
}

form {
    margin-bottom: 25px;
}

.features {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e2e8f0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: #4a5568;
}

.hidden-form {
    display: none;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutRight {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.flashbox {
    margin-bottom: 20px;
}

.flash {
    padding: 12px 16px;
    border-radius: 20px;
    font-weight: 500;
    text-align: center;
    animation: slideInRight 0.5s ease-out;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.flash.hiding {
    animation: slideOutRight 0.5s ease-in forwards;
}

.flash-success {
    background: var(--flash-success-bg);
    color: var(--flash-success-color);
    border: 1px solid var(--flash-success-border);
}

.flash-error {
    background: var(--flash-error-bg);
    color: var(--flash-error-color);
    border: 1px solid var(--flash-error-border);
}

.sidebar {
    background-color: var(--div-bg-color);
    border-radius: 10px;
    border: var(--borders);
    backdrop-filter: var(--glass);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.6s ease-out;
    min-height: 40vh;
}

.stats-card {
    margin-bottom: 30px;
}

.stats-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

.quick-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn {
    padding: 15px 20px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: white;
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-color);
    border: var(--btn-secondary-border);
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
}

.btn-danger {
    background: #fc8181;
    color: white;
}

.btn-danger:hover {
    background: #f56565;
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    body {
        background: var(--bg);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        min-height: 0vh;
    }
}

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

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