/* Modern Header Styles */
.modern-header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.dark .modern-header {
    background: rgba(90, 90, 90, 0.8);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 60px;
    width: auto;
}

.dark .logo-image {
    /* Logo already has good contrast in dark mode */
}

/* Mode Switcher - REMOVED (UI simplified to single chat interface) */

.app-header h1 {
    font-size: 1.25rem;
    color: var(--silver);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    letter-spacing: -0.025em;
}

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.wallet-display {
    color: var(--muted-foreground);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

.dark-mode-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--switch-background);
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.header-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--foreground);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.mode-indicator {
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius);
    font-weight: var(--font-weight-medium);
    font-size: 0.8rem;
    border: 1px solid;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.conversation-mode {
    background: var(--dark-grey);
    color: var(--silver);
    border-color: var(--medium-grey);
}

.research-mode {
    background: var(--yellow-light);
    color: var(--charcoal);
    border-color: var(--ledewire-yellow);
}

.mode-toggle, .clear-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--medium-grey);
    background: var(--dark-grey);
    color: var(--silver);
    border-radius: var(--radius);
    font-weight: var(--font-weight-medium);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-toggle:hover {
    background: var(--ledewire-yellow);
    color: var(--charcoal);
    border-color: var(--ledewire-yellow);
    box-shadow: var(--shadow-yellow);
}

.clear-btn {
    border-color: var(--medium-grey);
    color: var(--light-grey);
}

.clear-btn:hover {
    background: var(--medium-grey);
    color: var(--pure-white);
    border-color: var(--light-grey);
}