* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --primary-black: #000000; --primary-dark: #111111; --gray-dark: #2c2c2c; --gray-light: #f5f5f5; --gray-border: #e8e8e8; --text-main: #1a1a1a; --text-muted: #6b6b6b; --error-red: #dc2626; --success-green: #10b981; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; background: #ffffff; overflow: hidden; }
.split-screen { display: flex; width: 100%; height: 100vh; overflow: hidden; }
.login-side { flex: 1; display: flex; align-items: center; justify-content: center; background: #ffffff; overflow-y: auto; padding: 2rem; }
.login-container { width: 100%; max-width: 460px; padding: 1rem; }
.brand { margin-bottom: 2.5rem; }
.brand h1 { font-size: 1.8rem; font-weight: 700; color: var(--primary-black); letter-spacing: -0.5px; margin-bottom: 0.5rem; }
.brand p { color: var(--text-muted); font-size: 0.85rem; }
.welcome-text { margin-bottom: 2rem; }
.welcome-text h2 { font-size: 1.6rem; font-weight: 600; color: var(--text-main); margin-bottom: 0.5rem; }
.welcome-text p { color: var(--text-muted); font-size: 0.85rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.7rem; font-weight: 600; color: var(--gray-dark); text-transform: uppercase; letter-spacing: 0.8px; }
.form-group label i { margin-right: 6px; font-size: 0.7rem; }
.form-input { width: 100%; padding: 14px 16px; background: var(--gray-light); border: 1px solid var(--gray-border); border-radius: 14px; font-size: 0.9rem; color: var(--text-main); transition: all 0.2s ease; outline: none; font-weight: 450; }
.form-input:focus { border-color: var(--primary-black); background: #ffffff; box-shadow: 0 0 0 3px rgba(0,0,0,0.05); }
.form-input::placeholder { color: #b0b0b0; font-weight: 400; }
.remember-forgot { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.75rem; font-size: 0.8rem; }
.checkbox-container { display: flex; align-items: center; gap: 8px; }
.checkbox-container input { width: 16px; height: 16px; accent-color: var(--primary-black); cursor: pointer; }
.checkbox-container label { color: var(--text-muted); cursor: pointer; }
.forgot-link { color: var(--primary-black); text-decoration: none; font-weight: 500; transition: opacity 0.2s; }
.forgot-link:hover { opacity: 0.6; }
.login-button { width: 100%; padding: 14px; background: var(--primary-black); border: none; border-radius: 40px; font-size: 0.9rem; font-weight: 600; color: white; cursor: pointer; transition: all 0.2s ease; display: flex; align-items: center; justify-content: center; gap: 10px; }
.login-button:hover { background: #2c2c2c; transform: translateY(-1px); }
.divider { display: flex; align-items: center; text-align: center; margin: 1.8rem 0; color: var(--text-muted); }
.divider::before, .divider::after { content: ''; flex: 1; border-bottom: 1px solid var(--gray-border); }
.divider span { padding: 0 15px; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; }
.social-login { display: flex; justify-content: center; gap: 20px; margin-bottom: 1.5rem; }
.social-btn { width: 48px; height: 48px; background: var(--gray-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease; border: 1px solid var(--gray-border); }
.social-btn:hover { background: #e8e8e8; transform: scale(1.05); }
.register-link { text-align: center; margin-top: 1rem; font-size: 0.85rem; color: var(--text-muted); }
.register-link a { color: var(--primary-black); text-decoration: none; font-weight: 600; }
.register-link a:hover { text-decoration: underline; }
.message { padding: 12px; border-radius: 12px; margin-bottom: 20px; text-align: center; font-weight: 500; display: none; font-size: 0.85rem; }
.error-message { background: #fef2f2; border-left: 3px solid var(--error-red); color: var(--error-red); }
.success-message { background: #ecfdf5; border-left: 3px solid var(--success-green); color: var(--success-green); }
.image-side { flex: 1; position: relative; background: #0a0a0a; overflow: hidden; }
.slideshow-container { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1.2s ease-in-out; object-fit: cover; }
.slide.active { opacity: 1; }
.image-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 2rem; background: linear-gradient(transparent, rgba(0,0,0,0.85)); color: white; z-index: 10; }
.image-overlay h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.image-overlay p { font-size: 0.85rem; opacity: 0.9; opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s; }
.slide.active ~ .image-overlay h3, .slide.active ~ .image-overlay p { opacity: 1; transform: translateY(0); }
.slide-dots { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 20; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.5); cursor: pointer; transition: all 0.3s ease; }
.dot.active { width: 24px; border-radius: 4px; background: white; }
.progress-wheel { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255,255,255,0.95); backdrop-filter: blur(4px); z-index: 1000; display: none; justify-content: center; align-items: center; flex-direction: column; }
.wheel-container { text-align: center; background: white; padding: 30px 40px; border-radius: 24px; box-shadow: 0 20px 40px rgba(0,0,0,0.1); border: 1px solid #eee; }
.wheel { width: 48px; height: 48px; border: 3px solid #e8e8e8; border-top: 3px solid #000000; border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 20px; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
#wheelText { color: #1a1a1a; font-weight: 500; font-size: 0.9rem; }
.g_id_signin { display: none; }
@media (max-width: 900px) { .split-screen { flex-direction: column; } .image-side { display: none; } .login-side { padding: 1.5rem; } body { overflow: auto; } }
.projecthub-logo-wrapper { display: flex; align-items: center; gap: 12px; margin-bottom: 2.5rem; }
.projecthub-logo-img { height: 42px; width: auto; display: block; }
.projecthub-logo-wrapper h1 { font-size: 1.8rem; font-weight: 700; color: #000000; letter-spacing: -0.5px; margin: 0; }
.projecthub-logo-wrapper p { color: #6b6b6b; font-size: 0.85rem; margin: 4px 0 0 0; }