:root{--primary:#667eea;--secondary:#764ba2;--accent:#43766c;--success:#10b981;--error:#ef4444;--warning:#f59e0b;--white:#ffffff;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--space-xs:0.5rem;--space-sm:1rem;--space-md:1.5rem;--space-lg:2rem;--space-xl:3rem;--space-2xl:4rem;--shadow-sm:0 1px 2px 0 rgba(0, 0, 0, 0.05);--shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.1),0 2px 4px -1px rgba(0, 0, 0, 0.06);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1),0 4px 6px -2px rgba(0, 0, 0, 0.05);--shadow-xl:0 20px 25px -5px rgba(0, 0, 0, 0.1),0 10px 10px -5px rgba(0, 0, 0, 0.04);--shadow-2xl:0 25px 50px -12px rgba(0, 0, 0, 0.25);--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-2xl:1.5rem;--transition-fast:150ms cubic-bezier(0.4, 0, 0.2, 1);--transition-base:300ms cubic-bezier(0.4, 0, 0.2, 1);--transition-slow:500ms cubic-bezier(0.4, 0, 0.2, 1)}.auth-page-wrapper{min-height:calc(100vh - var(--header-height,70px));background:linear-gradient(135deg,var(--primary) 0,var(--secondary) 50%,var(--accent) 100%);background-size:200% 200%;animation:gradientShift 15s ease infinite;position:relative;padding:var(--space-2xl) var(--space-sm);display:flex;align-items:center;justify-content:center}@keyframes gradientShift{0%{background-position:0 50%}50%{background-position:100% 50%}100%{background-position:0 50%}}.auth-page-wrapper::after,.auth-page-wrapper::before{content:'';position:absolute;border-radius:50%;opacity:.1;animation:float 6s ease-in-out infinite}.auth-page-wrapper::before{width:300px;height:300px;background:var(--white);top:10%;left:10%;animation-delay:0s}.auth-page-wrapper::after{width:200px;height:200px;background:var(--white);bottom:15%;right:15%;animation-delay:3s}@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.05)}}.social-login-container{max-width:440px;width:100%;margin:0 auto;padding:var(--space-2xl);background:rgba(255,255,255,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:var(--radius-2xl);box-shadow:var(--shadow-2xl),0 0 0 1px rgba(255,255,255,.1);position:relative;animation:slideUp .6s cubic-bezier(.16,1,.3,1);transform-origin:center}@keyframes slideUp{from{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.social-login-container h2{text-align:center;margin-bottom:var(--space-xs);font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeIn .8s ease .2s both}.social-login-container>p{text-align:center;margin-bottom:var(--space-xl);color:var(--gray-600);font-size:1rem;animation:fadeIn .8s ease .3s both}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.social-login-btn{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);width:100%;padding:1rem 1.5rem;margin-bottom:var(--space-md);border:2px solid transparent;border-radius:var(--radius-xl);font-size:1rem;font-weight:600;text-decoration:none;transition:all var(--transition-base);cursor:pointer;position:relative;overflow:hidden;animation:fadeIn .8s ease .4s both}.social-login-btn:nth-child(4){animation-delay:.5s}.social-login-btn::before{content:'';position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.3);transform:translate(-50%,-50%);transition:width .6s,height .6s}.social-login-btn:active::before{width:300px;height:300px}.social-login-btn i,.social-login-btn img{width:24px;height:24px;font-size:24px;transition:transform var(--transition-base)}.social-login-btn:hover i,.social-login-btn:hover img{transform:scale(1.1) rotate(5deg)}.btn-google{background:var(--white);color:var(--gray-700);border-color:var(--gray-200);box-shadow:var(--shadow-sm)}.btn-google:hover{background:var(--gray-50);color:var(--gray-900);border-color:var(--gray-300);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-google:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.btn-github{background:linear-gradient(135deg,#24292e 0,#1b1f23 100%);color:var(--white);box-shadow:var(--shadow-md)}.btn-github:hover{background:linear-gradient(135deg,#1b1f23 0,#14171a 100%);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-xl),0 0 20px rgba(36,41,46,.4)}.btn-github:active{transform:translateY(0);box-shadow:var(--shadow-md)}.social-login-btn.loading{pointer-events:none;opacity:.7}.social-login-btn.loading::after{content:'';position:absolute;width:20px;height:20px;border:3px solid currentColor;border-radius:50%;border-top-color:transparent;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.divider{text-align:center;margin:var(--space-xl) 0;position:relative;animation:fadeIn .8s ease .6s both}.divider::before{content:'';position:absolute;top:50%;left:0;right:0;height:1px;background:linear-gradient(to right,transparent,var(--gray-300) 20%,var(--gray-300) 80%,transparent)}.divider span{background:rgba(255,255,255,.95);padding:0 var(--space-md);color:var(--gray-500);font-size:.875rem;font-weight:500;position:relative;z-index:1;text-transform:uppercase;letter-spacing:.05em}.social-login-footer{text-align:center;margin-top:var(--space-xl);padding-top:var(--space-lg);border-top:1px solid var(--gray-200);animation:fadeIn .8s ease .7s both}.social-login-footer p{color:var(--gray-600);font-size:.9375rem;margin:0}.social-login-footer a{color:var(--primary);text-decoration:none;font-weight:600;transition:all var(--transition-fast);position:relative}.social-login-footer a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:width var(--transition-base)}.social-login-footer a:hover{color:var(--secondary)}.social-login-footer a:hover::after{width:100%}.trust-badge{display:flex;align-items:center;justify-content:center;gap:var(--space-xs);margin-top:var(--space-lg);padding:var(--space-sm);background:var(--gray-50);border-radius:var(--radius-lg);animation:fadeIn .8s ease .8s both}.trust-badge i{color:var(--success);font-size:1.125rem}.trust-badge span{color:var(--gray-600);font-size:.875rem}@media (max-width:768px){.auth-page-wrapper{padding:var(--space-lg) var(--space-sm)}.social-login-container{padding:var(--space-xl) var(--space-lg);border-radius:var(--radius-xl)}.social-login-container h2{font-size:1.75rem}.social-login-btn{padding:.875rem 1.25rem;font-size:.9375rem}}@media (max-width:480px){.auth-page-wrapper::after,.auth-page-wrapper::before{display:none}.social-login-container{padding:var(--space-lg) var(--space-md)}.social-login-container h2{font-size:1.5rem}.social-login-btn{padding:.75rem 1rem;font-size:.875rem}}.social-login-btn:focus{outline:0;box-shadow:0 0 0 3px rgba(102,126,234,.4)}.social-login-footer a:focus{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--radius-sm)}@media (prefers-reduced-motion:reduce){*,::after,::before{animation-duration:0s!important;animation-iteration-count:1!important;transition-duration:0s!important}}