/* base.css */

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

body {
    font-family: var(--font-sans, 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

header {
    z-index: 10;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--card-border);
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--header-bg, rgba(2, 6, 23, 0.4));
    transition: var(--transition-smooth);
}

.logo_section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth, all 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.logo_section:hover {
    opacity: 0.95;
    transform: translateY(-1px);
}

.logo_icon {
    color: var(--logo-icon-color, #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo_icon i,
.logo_icon svg {
    width: 24px;
    height: 24px;
}

.logo_text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: var(--logo-gradient, linear-gradient(to right, #f8fafc, #94a3b8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

footer {
    margin-top: auto;
    padding: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--card-border);
    z-index: 10;
}

.btn_login, .btn_logout {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn_login {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: #4f46e5;
}

.btn_logout {
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.15);
    color: #dc2626;
}

.btn_login i,
.btn_login svg,
.btn_logout i,
.btn_logout svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.btn_login:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
}

.btn_logout:hover {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 14px 0 rgba(220, 38, 38, 0.35);
    transform: translateY(-1px);
}

.btn_login:hover i,
.btn_login:hover svg,
.btn_logout:hover i,
.btn_logout:hover svg {
    transform: translateX(2px);
}

.btn_login:active,
.btn_logout:active {
    transform: translateY(0);
}

.user_profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user_name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}