@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #2563eb, #3b82f6);
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-border: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: 'Outfit', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    overflow: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--dark-border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Glassmorphism Classes */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

/* Typography & Layout elements */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.1), transparent 400px),
                radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.05), transparent 400px);
}

.sidebar {
    width: 280px;
    border-right: 1px solid var(--dark-border);
    background-color: rgba(15, 23, 42, 0.95);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    position: relative;
}

/* Loading Progress */
.loading-progress {
    position: absolute;
    display: block;
    width: 6rem;
    height: 6rem;
    inset: 35vh 0 auto 0;
    margin: 0 auto;
}
.loading-progress circle {
    fill: none;
    stroke: var(--dark-border);
    stroke-width: 0.4rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}
.loading-progress circle:last-child {
    stroke: var(--primary-color);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.6), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}
.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--text-secondary);
    inset: calc(35vh + 7rem) 0 auto 0;
}
.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading AI Mentor");
}

/* Custom UI Components */
.mentor-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 1px solid var(--dark-border);
    background: var(--dark-surface);
}
.mentor-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 20px -10px rgba(37, 99, 235, 0.3);
}

.btn-premium {
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}
.btn-premium:hover {
    opacity: 0.9;
    transform: scale(1.02);
}
.btn-premium:disabled {
    background: var(--dark-border);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

/* Chat Styles */
.chat-messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-bubble {
    max-width: 75%;
    padding: 14px 18px;
    border-radius: 16px;
    line-height: 1.5;
    word-break: break-word;
    position: relative;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.chat-bubble.user {
    align-self: flex-end;
    background: var(--primary-gradient);
    color: white;
    border-bottom-right-radius: 4px;
}

.chat-bubble.assistant {
    align-self: flex-start;
    background: var(--dark-surface);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--dark-border);
}

.chat-input-bar {
    padding: 16px 24px;
    border-top: 1px solid var(--dark-border);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input {
    flex: 1;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 24px;
    padding: 12px 20px;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s ease;
}
.chat-input:focus {
    border-color: var(--primary-color);
}

.chat-input::placeholder {
    color: var(--text-secondary);
}

/* Responsive sidebar */
@media (max-width: 768px) {
    .sidebar {
        display: none; /* Can be toggled with burger menu */
    }
}