:root {
    --bg-color: #0f172a; /* Slate 900 */
    --text-primary: #f8fafc; /* Slate 50 */
    --text-secondary: #94a3b8; /* Slate 400 */
    --accent-color: #3b82f6; /* Blue 500 */
    --accent-glow: rgba(59, 130, 246, 0.4);
    --card-bg: rgba(30, 41, 59, 0.6); /* Slate 800 */
    --border-color: rgba(255, 255, 255, 0.08);
    --warning-bg: rgba(234, 179, 8, 0.1); /* Yellow 500 */
    --warning-border: rgba(234, 179, 8, 0.2);
    --warning-text: #fde047; /* Yellow 300 */
    --info-bg: rgba(56, 189, 248, 0.1); /* Sky 400 */
    --info-border: rgba(56, 189, 248, 0.2);
    --info-text: #7dd3fc; /* Sky 300 */
    
    --transition-standard: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection color */
::selection {
    background-color: rgba(59, 130, 246, 0.3);
    color: #ffffff;
}

/* Dynamic Background Elements */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.glow-1, .glow-2 {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: float 25s infinite ease-in-out alternate;
}

.glow-1 {
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
}

.glow-2 {
    bottom: -20%;
    right: -10%;
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 70%); /* Violet glow */
    animation-delay: -12s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(8%, 8%) scale(1.15); }
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 60px 24px;
    position: relative;
    z-index: 1;
}

/* Glassmorphism Header */
header {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 48px;
    margin-bottom: 48px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    transition: var(--transition-standard);
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

header:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.15);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: #60a5fa;
    margin-bottom: 24px;
    padding: 8px 20px 8px 12px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 30px;
    border: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

.app-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

h1 {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 32px;
    background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    line-height: 1.2;
}

.meta-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

.meta-info span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.meta-info svg {
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Main Content Area */
main {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 56px;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.3);
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
    opacity: 0;
}

.intro {
    font-size: 19px;
    color: #e2e8f0;
    margin-bottom: 28px;
    line-height: 1.8;
    letter-spacing: -0.2px;
}

.intro strong {
    color: #ffffff;
    font-weight: 600;
    background: linear-gradient(to right, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

section {
    margin-bottom: 56px;
    position: relative;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: -0.5px;
}

.section-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 800;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

p {
    margin-bottom: 20px;
    color: #cbd5e1;
}

ul {
    list-style-type: none;
    margin-bottom: 24px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 20px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.03);
}

li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 20px;
    color: #cbd5e1;
    line-height: 1.7;
}

li:last-child {
    margin-bottom: 0;
}

li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-glow);
}

strong {
    color: #f8fafc;
    font-weight: 600;
}

/* Alerts */
.alert {
    padding: 24px;
    border-radius: 20px;
    margin: 32px 0;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.alert p:last-child, .alert div:last-child {
    margin-bottom: 0;
}

.alert-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
}

.alert-warning::before {
    background: #eab308;
}

.alert-warning p {
    color: #fef08a;
}

.alert-info {
    background: var(--info-bg);
    border: 1px solid var(--info-border);
}

.alert-info::before {
    background: #0ea5e9;
}

.alert-info, .alert-info strong {
    color: #bae6fd;
}

/* Contact Section */
.contact-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 32px;
    transition: var(--transition-standard);
}

.contact-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    background: rgba(15, 23, 42, 0.6);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 17px;
}

.icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: 14px;
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-text .label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 600;
}

.contact-text a, .contact-text span:not(.label) {
    color: var(--text-primary);
    font-weight: 500;
}

.contact-text a {
    text-decoration: none;
    transition: var(--transition-standard);
    position: relative;
}

.contact-text a::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: #60a5fa;
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.contact-text a:hover {
    color: #60a5fa;
}

.contact-text a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Footer */
footer {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
    opacity: 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 700;
    color: #94a3b8;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.footer-app-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    object-fit: cover;
    opacity: 0.8;
}

footer p {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 0;
}

/* Animations */
@keyframes fade-in-up {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 40px 16px;
    }
    
    header {
        padding: 40px 24px;
        border-radius: 24px;
    }
    
    h1 {
        font-size: 28px;
    }
    
    main {
        padding: 40px 24px;
        border-radius: 24px;
    }
    
    h2 {
        font-size: 22px;
    }
    
    .intro {
        font-size: 17px;
    }
    
    ul {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    header {
        padding: 32px 20px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .meta-info span {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }
    
    .meta-info svg {
        display: none;
    }
    
    main {
        padding: 32px 20px;
    }
    
    h2 {
        font-size: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .contact-card {
        padding: 24px 16px;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}