* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    background-color: var(--tg-theme-bg-color, #0f172a);
    color: var(--tg-theme-text-color, #ffffff);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    overflow-x: hidden;
}

:root {
    --tg-theme-bg-color: #0f172a;
    --tg-theme-text-color: #ffffff;
    --tg-theme-button-color: #3b82f6;
    --tg-theme-button-text-color: #ffffff;
}

.pb-safe {
    padding-bottom: env(safe-area-inset-bottom, 80px);
}

.glass-header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 50;
}

.glass-nav {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 50;
}

.glass-card {
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.9));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #64748b;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
    border: none;
    outline: none;
    cursor: pointer;
}

.nav-btn.active {
    color: #3b82f6;
    transform: translateY(-2px);
}

.nav-btn.active svg {
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.6));
}

.fade-in {
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 4px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.5);
    border-radius: 4px;
}

input, textarea, select {
    caret-color: #3b82f6;
    font-family: inherit;
    resize: none;
}

select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

input:focus, textarea:focus, select:focus {
    outline: none;
}

.loader {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: #3b82f6;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}