:root{--color-primary: #2c3e50;--color-secondary: #3498db;--color-accent: #e74c3c;--color-success: #27ae60;--color-warning: #f39c12;--color-background: #ffffff;--color-surface: #f8f9fa;--color-text: #2c3e50;--color-text-secondary: #7f8c8d;--color-border: #dce1e6;--color-error: #e74c3c;--font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-family-heading: Georgia, serif;--font-size-base: 16px;--font-size-small: 14px;--font-size-large: 18px;--font-size-h1: 2.5rem;--font-size-h2: 2rem;--font-size-h3: 1.5rem;--line-height-base: 1.6;--line-height-heading: 1.2;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-xxl: 3rem;--border-width: 1px;--border-radius-sm: 4px;--border-radius-md: 8px;--border-radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .15);--transition-speed: .3s;--transition-timing: ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:var(--font-size-base)}body{font-family:var(--font-family-base);line-height:var(--line-height-base);color:var(--color-text);background-color:var(--color-background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:var(--font-family-heading);line-height:var(--line-height-heading);color:var(--color-primary);margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-h1)}h2{font-size:var(--font-size-h2)}h3{font-size:var(--font-size-h3)}a{color:var(--color-secondary);text-decoration:none;transition:color var(--transition-speed) var(--transition-timing)}a:hover{color:var(--color-accent);text-decoration:underline}button{font-family:var(--font-family-base);cursor:pointer}input,select,textarea{font-family:var(--font-family-base)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.site-header{background-color:var(--color-surface);border-bottom:var(--border-width) solid var(--color-border);padding:var(--spacing-lg) 0;box-shadow:var(--shadow-sm)}.site-header .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md)}.site-title{margin:0;color:var(--color-primary)}.theme-switcher-container{display:flex;align-items:center;gap:var(--spacing-sm)}.theme-select{padding:var(--spacing-sm) var(--spacing-md);border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius-sm);background-color:var(--color-background);color:var(--color-text);font-size:var(--font-size-base);transition:border-color var(--transition-speed) var(--transition-timing)}.theme-select:focus{outline:none;border-color:var(--color-secondary)}.main-content{min-height:calc(100vh - 200px);padding:var(--spacing-xxl) 0}.auth-section{display:flex;justify-content:center;align-items:center;padding:var(--spacing-xl) 0}.auth-container{width:100%;max-width:450px}.form-container{background-color:var(--color-surface);padding:var(--spacing-xxl);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md)}.form-container h2{margin-bottom:var(--spacing-lg);text-align:center}.auth-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.form-group label{font-weight:600;color:var(--color-text);font-size:var(--font-size-small);text-transform:uppercase;letter-spacing:.5px}.form-group input{padding:var(--spacing-md);border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius-sm);font-size:var(--font-size-base);transition:border-color var(--transition-speed) var(--transition-timing);background-color:var(--color-background);color:var(--color-text)}.form-group input:focus{outline:none;border-color:var(--color-secondary)}.form-group small{color:var(--color-text-secondary);font-size:var(--font-size-small)}.btn{padding:var(--spacing-md) var(--spacing-xl);border:none;border-radius:var(--border-radius-sm);font-size:var(--font-size-base);font-weight:600;text-align:center;transition:all var(--transition-speed) var(--transition-timing);cursor:pointer}.btn-primary{background-color:var(--color-secondary);color:#fff}.btn-primary:hover{background-color:var(--color-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-text-secondary);color:#fff}.btn-secondary:hover{background-color:var(--color-primary)}.btn-social{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);width:100%;padding:var(--spacing-md);background-color:var(--color-background);color:var(--color-text);border:var(--border-width) solid var(--color-border)}.btn-google:hover{background-color:#f8f9fa;border-color:#4285f4}.btn-github:hover{background-color:#24292e;color:#fff;border-color:#24292e}.btn-facebook:hover{background-color:#1877f2;color:#fff;border-color:#1877f2}.divider{display:flex;align-items:center;text-align:center;margin:var(--spacing-lg) 0;color:var(--color-text-secondary)}.divider:before,.divider:after{content:"";flex:1;border-bottom:var(--border-width) solid var(--color-border)}.divider span{padding:0 var(--spacing-md);font-size:var(--font-size-small);font-weight:600}.social-login{display:flex;flex-direction:column;gap:var(--spacing-md)}.form-error{color:var(--color-error);font-size:var(--font-size-small);padding:var(--spacing-sm);border-radius:var(--border-radius-sm);display:none}.form-error:not(:empty){display:block;background-color:#e74c3c1a;border:var(--border-width) solid var(--color-error)}.form-success{color:var(--color-success);font-size:var(--font-size-small);padding:var(--spacing-sm);border-radius:var(--border-radius-sm);display:none}.form-success:not(:empty){display:block;background-color:#27ae601a;border:var(--border-width) solid var(--color-success)}.info-message{background-color:#3498db1a;border:var(--border-width) solid var(--color-secondary);color:var(--color-text);padding:var(--spacing-md);border-radius:var(--border-radius-sm);margin-bottom:var(--spacing-lg);font-size:var(--font-size-small)}.warning-message{background-color:#f39c121a;border:var(--border-width) solid var(--color-warning);color:var(--color-text);padding:var(--spacing-xl);border-radius:var(--border-radius-md);text-align:center}.warning-message h3{margin-bottom:var(--spacing-md);color:var(--color-warning)}.form-footer{text-align:center;margin-top:var(--spacing-lg);color:var(--color-text-secondary);font-size:var(--font-size-small)}.protected-section{animation:fadeIn .5s var(--transition-timing)}.user-info{background-color:var(--color-surface);padding:var(--spacing-lg);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-xl);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md);box-shadow:var(--shadow-sm)}.user-info p{margin:0;font-size:var(--font-size-large)}.content-area{background-color:var(--color-surface);padding:var(--spacing-xxl);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md)}.content-area h2{margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-md);border-bottom:2px solid var(--color-border)}.entries-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.entry-card{background-color:var(--color-background);padding:var(--spacing-lg);border-radius:var(--border-radius-md);border:var(--border-width) solid var(--color-border);transition:transform var(--transition-speed) var(--transition-timing),box-shadow var(--transition-speed) var(--transition-timing)}.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.entry-card h3{color:var(--color-primary);margin-bottom:var(--spacing-sm);font-size:var(--font-size-h3)}.entry-card .entry-date{color:var(--color-text-secondary);font-size:var(--font-size-small);margin-bottom:var(--spacing-md);font-style:italic}.entry-card .entry-info{color:var(--color-text);line-height:var(--line-height-base)}.no-entries{text-align:center;padding:var(--spacing-xxl);color:var(--color-text-secondary)}.site-footer{background-color:var(--color-surface);border-top:var(--border-width) solid var(--color-border);padding:var(--spacing-xl) 0;text-align:center;color:var(--color-text-secondary);font-size:var(--font-size-small);margin-top:var(--spacing-xxl)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.site-header .container{flex-direction:column;text-align:center}.form-container{padding:var(--spacing-xl)}.entries-grid{grid-template-columns:1fr}.user-info{flex-direction:column;text-align:center}}:root{--color-primary: #5d4037;--color-secondary: #8d6e63;--color-accent: #d32f2f;--color-success: #388e3c;--color-warning: #f57c00;--color-background: #faf8f3;--color-surface: #ffffff;--color-text: #3e2723;--color-text-secondary: #795548;--color-border: #d7ccc8;--color-error: #c62828;--font-family-base: Georgia, "Times New Roman", Times, serif;--font-family-heading: "Palatino Linotype", "Book Antiqua", Palatino, serif;--font-size-base: 17px;--line-height-base: 1.7;--spacing-xs: .3rem;--spacing-sm: .6rem;--spacing-md: 1.2rem;--spacing-lg: 1.8rem;--spacing-xl: 2.4rem;--spacing-xxl: 3.6rem;--border-width: 2px;--border-radius-sm: 3px;--border-radius-md: 6px;--border-radius-lg: 10px;--shadow-sm: 0 2px 4px rgba(93, 64, 55, .1);--shadow-md: 0 4px 8px rgba(93, 64, 55, .15);--shadow-lg: 0 8px 20px rgba(93, 64, 55, .2);--transition-speed: .4s;--transition-timing: ease-in-out}