:root{--color-background: #f7f7f5;--color-surface: #ffffff;--color-text: #1f2328;--color-text-muted: #5f6368;--color-border: #d8dadd;--color-primary: #2f6f5e;--color-success: #2e7d32;--color-warning: #b26a00;--color-error: #c62828;--color-info: #1565c0;--font-family-base: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-size-base: 1rem;--line-height-base: 1.5;--space-1: 0.25rem;--space-2: 0.5rem;--space-3: 1rem;--space-4: 1.5rem;--space-5: 2rem;--radius-base: 0.375rem}@media(prefers-color-scheme: dark){:root{--color-background: #16181b;--color-surface: #1f2226;--color-text: #e6e8eb;--color-text-muted: #a0a4aa;--color-border: #33373c;--color-primary: #5fb39c}}*,*::before,*::after{box-sizing:border-box}body{margin:0;font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-base);color:var(--color-text);background:var(--color-background)}.app-header{display:flex;align-items:center;padding:var(--space-3) var(--space-4);background:var(--color-surface);border-bottom:1px solid var(--color-border)}.app-header__brand{font-weight:600;color:var(--color-primary)}.app-header__actions{display:flex;align-items:center;gap:var(--space-3);margin:0 0 0 auto}.app-header__user{color:var(--color-text-muted)}.app-main{padding:var(--space-4)}.button{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-2) var(--space-3);font:inherit;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-base);cursor:pointer}.button:hover{border-color:var(--color-primary)}.button--primary{color:#fff;background:var(--color-primary);border-color:var(--color-primary)}.button--primary:hover{filter:brightness(1.1)}.card{padding:var(--space-4);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-base)}.card--narrow{max-width:24rem;margin:var(--space-5) auto}.card__title{margin:0 0 var(--space-4);font-size:1.25rem}.form{display:flex;flex-direction:column;gap:var(--space-3)}.form__field{display:flex;flex-direction:column;gap:var(--space-1)}.form__field input,.form__field select,.form__field textarea{padding:var(--space-2);font:inherit;color:var(--color-text);background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-base)}.form__field input:focus,.form__field select:focus,.form__field textarea:focus{outline:2px solid var(--color-primary);outline-offset:1px}.form__error{margin:0;color:var(--color-error)}.messages{margin:0 0 var(--space-4);padding:0;list-style:none}.message{margin-bottom:var(--space-2);padding:var(--space-2) var(--space-3);border-left:4px solid var(--color-info);border-radius:var(--radius-base);background:var(--color-surface)}.message--success{border-left-color:var(--color-success)}.message--warning{border-left-color:var(--color-warning)}.message--error{border-left-color:var(--color-error)}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;border:0}